Legoland’s main target market is families with young children

The families would enjoy a great day out while having fun with there children. The young children will have lots to do as the park is really based around them. Legoland has over 50 fantastic rides and attractions. Families with older children would not prefer Legoland, as they would not gave a fun day compared to, if they went to Thorpe Park. Thorpe Park is a thrill park and would excite them a lot more then Legoland. This is mainly because this is not the age group Legoland has targeted. Only one or two rides would attract the older children compared to nearly all the rides at Thorpe Park. Thorpe Park mainly attracts people from the age of 12 upwards as it is a thrill-seeking park. Young couples again would not have such a great time here purely because the park does not appeal to them. However they can enjoy some rides and have photos as most rides have ride photography. But Thorpe Park would be a better option, as they would enjoy themselves a lot more, with better thrill seeking rides. Legoland's nearest competitor would have to be Thorpe Park but they are two totally different parks as Legoland is aimed at 3-12 year olds where as Thorpe Parks target market is teenagers and adults. Thorpe Park is basically a thrill park as all the rides are quite intense. Some of the intense rides are the Colossus, Nemesis Inferno, Quantum, Detonator and Rumba rapids. The prices between Thorpe Park and Legoland are quite similar but a 14 year old for example would much prefer spend there money at Thorpe Park as it is better value for money for over 12's. Thorpe Park Legoland Adults- à ¯Ã‚ ¿Ã‚ ½26.00 Adults- à ¯Ã‚ ¿Ã‚ ½22.95 Children- à ¯Ã‚ ¿Ã‚ ½19.50 Children- à ¯Ã‚ ¿Ã‚ ½19.95 Seniors- à ¯Ã‚ ¿Ã‚ ½17.00 Seniors- à ¯Ã‚ ¿Ã‚ ½16.95 Legoland is a unique park because it is the only park that offers something for younger children in the Royal Borough and is probably the best known in the UK. The closest family park to Legoland is Beavers Park inside the Pleasure Beach at Blackpool and also Paulton Park in New Forest. Paulton's Park is situated in a beautiful parkland setting of 140 acres with colourful gardens, sweeping lawns and a horseshoe shaped lake. It is a place full of fun, action and excitement. There are a variety of things to see and do for all ages. There are 40 different rides and attractions, fast and slow, wet and dry. Some of the features on offer are the Family Roller Coaster, Raging River Ride, Tiny Tots Town, Kids Kingdom, Clock Maze and there are many more. There are not a lot of comparisons between Legoland and Paulton Park. Paulton Park has fewer rides then Legoland though, but only by a few. Paulton Park is not advertised as much as Legoland and Paulton Park is not well known as Legoland in the UK. Legoland has also a better catchment area then Paulton Park. Legoland is very close to London, the capital of England also only 12 miles away from Heathrow airport. Also Legoland has many attractions nearby as it is situated in Windsor, which is a very popular tourist attraction. Paulton Parks catchment area is Bournemouth, Southampton and Brighton. Poulton Park is not commercialised enough. There are not a lot of improvements needed for Legoland as it is a very successful company and appeals to there target market very well. They are probably the best family park in the UK. To increase visitor figures they could build a couple more rides that would attract more teenagers. Maybe a thrill ride, this will attract a much wider range of people to Legoland. They could also make more rides to expand the park and make their customers day longer and more special. NEW FOREST LOCATION The New Forest is situated in the Southern part of England. A superb family holiday destination, flanked by the sea-faring cities of Portsmouth, Southampton and the town of Poole. New Forest extends to the South coast and the Isle of Wight. The New Forest has 93,000 acres of woodland and open-land brimming with wildlife. It is the largest un-enclosed area in Southern England, with ponies, donkeys, cattle, pigs, deer's and more roaming freely. There are a lot of activities that you can take up when you're at New Forest; the activities include horse riding, camping, walking, cycling and water sports. New Forest was set aside as a special place over nine centuries ago by William the conqueror. When you enter New Forest today, it appears that you're going backwards in time. The landscape is unique and traditions exist here that are unchanged since medieval times. New Forest is well known as an Area of Outstanding Natural Beauty (AONB). The catchment area for New Forest is quite good with a few major towns and cities nearby. Major towns and cities within two hours of New Forest are Bournemouth, Southampton, Brighton, Windsor, Bristol, Dover and London. The District has a resident population of 171,000, distributed between six main centres and many small villages. As in most rural communities there is considerable concern to maintain the unique quality of life, including not only the attractiveness of the area but also local services. Populations: Bournemouth- 163,444 One-Hour Drive of New Forest Southampton- 217,445 Brighton- 247,817 One and a Half Hour Drive of New Forest Bristol- 380,615 Windsor- 133,626 Two-Hour Drive of New Forest London- 7,172,091 Dover- 104, 566 Visitor Breakdown Millions enjoy the New Forest each year. The majority of visits are by local people within the district, this is approximately 10 million a year by the locals. A further 3.5 million are day visits from further afield and 2.5 million are visits by people staying overnight in the area. They come primarily for fresh air, recreation and peace and quiet. The New Forest also has many features and attractions for visitors. I think New Forest is suited to every age group. Some of the top attractions include Paulton's Park, Art sway, New Forest Cider Farm, Setley Ridge Vineyard, Cal Shot Castle and possibly one of the most popular reasons for visiting New Forest is the beautiful wildlife. Paulton Park is a place full of fun, action and excitement. Children would just love it here, with lots to do. It is very similar to that of Legoland in Windsor. There are 40 different rides and attractions, fast and slow, wet and dry. Some of the features on offer are the Family Roller Coaster, Raging River Ride, Tiny Tots Town, Kids Kingdom, Clock Maze and there are many more. Art Sway attracts many visitors who are interested in the modern day art designs and paintings. New Forest Cider Farm and Setley Ridge Vineyard are the ideal places to buy and experience how and where wine is grown, produced and bottled. The main target here is at the adults, it gives them a chance to buy and taste freshly brewed alcohol. Whilst on your visit to New Forest there is a great chance to visit one of Henry VIII's monuments, the Cal Shot Castle. Visitors have the chance to get right up close with the animals, as there are wild ponies and goats roaming free in the wild. The forest offers a number of centres with different animals on show, with Europe's largest gathering of multi-specied otters and owls. There are two beautiful sites you can visit they are Wildlife Park and also Longdown Activity Farm. There are a lot of activities that you can take up when you're at New Forest; the activities include horse riding, camping, walking, cycling and water sports. ACCESS Visitors can come to New Forest by car, rail and sea. By Road The road links for New Forest are excellent with the M3 and M27 providing access from London and the South East. If you are travelling from the Midlands you have the benefit of the M40 and A34. By Rail You can get to the New Forest from all over the country by train. There are over 130 stopping trains a day at Brockenhurst, which is on the mainline from London Waterloo, this is a one and a half hour journey. By sea Wightlink Ferries operate frequent services from the Isle of Wight to Lymington. P&O European Ferries operate services from Le Havre, Cherbourg and Bilbao. Brittany Ferries run services from Caen, St Malo and Santander. By Air The major London airports, Gatwick and Heathrow, are less than 100 miles away. Just outside New Forest there are Southampton and Bournemouth International Airports. These are easily accessible via good rail and coach connections.

Ferdinand and Miranda Essay

How does Shakespeare present the encounter between Ferdinand and Miranda from lines 450-499? The encounter between Miranda and Ferdinand in lines 450-499 of The Tempest is presented using three characters, Miranda, Ferdinand, and Prospero. Miranda and Ferdinand have fallen in love at first sight to Prospero’s delight, though he doesn’t want them to fall in love too quickly or interfere with his plans, so he lies to Miranda about Ferdinand’s unworthiness and then charms Ferdinand from moving. Miranda is presented as a helpless damsel distressed by the way her father handled this situation. â€Å"If the ill spirit have so fair a house, Good things will strive to dwell with’t† These are Miranda’s first words in these lines saying that physical beauty is a sign of proper morals and righteousness. This was an axiom during the renaissance period, hinting that she is only wise enough to state the obvious argument. After Ferdinand is charmed from moving she says, â€Å"He’s gentle and not fearful. † This sounding like she believes he is courageous, but more likely she is emphasizing his gentleness and compassion. These short interjections present Miranda as useless to the entire dispute. There are only three lines of verbal exchange between Miranda and Ferdinand, â€Å"My father is of a better nature, sir, Than he appears by speech. This is unwonted Which now came from him. † This shows Miranda’s inexperience with men as she is almost too shy to say anything at all. Ferdinand is depicted as a good-looking man, with the normal qualities that come along with royalty such as courage, and a heroic nature. â€Å"I will resist such entertainment (treatment) Till mine enemy has more power. † This expresses Ferdinand’s royal nature, as he is accustomed to overpowering all enemies. After prospero commands his attention, accuses him of falsely bearing the title of the prince of Naples, and asks for him to obey his every word, Ferdinand says, â€Å"No, as I am a man. † This explains Ferdinand is used to getting what he wants and being adored by all and has previously given out orders rather than taken them. Finally, Ferdinand gives up arguing prospero, â€Å"Might I but through my prison one a day Behold this maid† He pledges his heart to Miranda saying that he doesn’t care if he gets punished as long as he can see this girl. But both of these characters are dwarfed by Prospero’s powers and wisdom. Prospero is the centre of all talk in these lines, as both of the younger characters are pleading to Prospero to let them live out their love for one another, though neither can match the sorcerer’s power, â€Å"Come from they ward, For I can here disarm thee with this stick And make thy weapon drop. † Here is the suggestion that prospero is the mightiest of all men, as his stick can defeat any armed man. His wisdom is also expressed through the use of proverbs, â€Å"What, I say, my foot my tutor? † This asserts Prospero’s paternal control over Miranda as well as proving that prospero is a man of great intellect. All of Prospero’s ‘aside’ passages allow the audience to see through his eyes, â€Å"(aside) They are both in either’s powers, but this swift Business I must uneasy make. † Here we are told that prospero, despite the fact that he is pleased with his daughter’s love, is planning to put Ferdinand through menial tests, possibly to keep him from disturbing his plans. Seeing this passage through Prospero’s eyes gives the audience a sense that he overwhelms the others in power and wisdom. Shakespeare has made Prospero the key to the presentation of this encounter.

Project on Spy Ear

CHAPTER 1 INTRODUCTION, CIRCIT DIAGRAM AND WORKING INTRODUCTION Spy ear is the devices which converts low power audio signal to high power signal and gain. It can be used in Theaters , Concert halls, Lecture rooms, Trains, Court houses, Conference rooms, Embassies, Gaming facilities, Recording studios, Aircraft , railways ,bus station etc. With this sound amplifier, you can now hear things crystal clear that you could never hear before. Spy ear is very easy to use, just put the ear buds in your ears – aim the Spy Ear towards what you want to hear and things are heard crystal clear.Spy Ear has adjustable volume control, which amplifies sound up to 50 decibels. Spy ear is also great for watching TV late at night, while your spouse sleeps you can keep the sound on the TV way down and still hear clearly. In spy ear circuit the most important part which is used to amplify the ckt is An IC named LM386N, which is a low sound amplifier, it amplifies the sound which is received by the condenser mic connected in the ckt. The LM386 is a power amplifier designed for use in low voltage consumer applications.The gain is internally set to 20 to keep external part count low, but the addition of an external resistor and capacitor between pins 1 and 8 will increase the gain to any value from 20 to 200. The inputs are ground referenced while the output automatically biases to one-half the supply voltage. The quiescent power drain is only 24 mill watts when operating from a 6 volt supply, making the LM386 ideal for battery operation. Spy ear is widely using in the spy works. Many spy agencies, National Security Agencies using both wired and wireless spy ears to hear the private conversation and to cought any illegal person doing any illegal work.CIRCUIT DIAGRAM [pic] WORKING What binoculars do to improve your vision, this personal sound enhancer circuit does for listening. This lightweight gadget produces an adjustable gain on sounds picked up from the built-in high-sensiti vity condenser microphone. So you can hear what you have been missing. With a 6V (4? 1. 5V) battery, it produces good results. a small signal amplifier is built around transistor BC547 (T1). Transistor T1 and the related. components amplify the sound signals picked up by the condenser microphone (MIC).The amplified signal from the preamplifier stage is fed to input pin 3 of IC LM386N (IC1) through capacitor C2 (100nF) and volume control VR1 (10-kilo-ohm log). A decoupling network comprising resistor R5 and capacitor C3 provides the preamplifier block with a clean supply voltage. Audio amplifier IC LM386N (IC1) is designed for operation with power supplies in the 4-15V DC range. It is housed in a standard 8-pin DIL package, consumes very small quiescent current and is ideal for battery-powered portable applications. The processed output signal from capacitor C2 goes to one end of volume control VR1.The wiper is taken to pin 3 of LM386N audio output amplifier. Note that the R6-C4 netw ork is used to RF-decouple positive-supply pin 6 and R8-C7 is an optional Zobel network that ensures high frequency stability when feeding an inductive headphone load. Capacitor C6 (22? F, 16V) wired between pin 7 and ground gives additional ripple rejection. The output of LM386N power amplifier can safely drive a standard 32-ohm monophonic headphone/earphone. Assemble the circuit on a small general-purpose PCB and house in a suitable metallic enclosure with an integrated battery holder and headphone/ earphone socket as shown in .Fit the on/off switch (S1), volume control (VR1) and power indicator (LED1) on the enclosure. Finally, fit the condenser microphone (MIC) on the front side of the enclosure and link it to the input of the preamplifier via a short length of the shielded wire. CHAPTER 2 COMPONENTS AND TOOLS USED COMPONENT USED COMPONENT NAMESPECIFICATION QUANTITY RESISTANCES R14. 7K? 1 R2330K? 1 R333? 1 R4680? 1 R5150? 1 R610? 1 R71K? 1 R810? , 0. 5W1 CAPACITANCES C110n(Non P olar)1 C2100n(Non Polar)1 C347 µ(elec. ) , 16V(Polar)1 C41000 µ(elec. ) , 16V(Polar)1 C54. 7 µ(elec. ) , 16V(Polar)1 C622 µ(elec. ) , 16V(Polar)1 C7100n(Non Polar)1C8100 µ(elec. ) , 16V(Polar)1 C9100n(Non Polar)1 C10470 µ(elec. ) , 16V(Polar)1 VOLUME CONTROLLER VR110K? 1 TRANSISTOR T1BC5471 ICLM386N1 IC BASE8-PIN1 LED1 CONDENSER MIC1 EARPHONE32? 1 BATTERIES1. 5V4 BATTERIES HOLDER1 HOLDER CAP1 SWITCH1 PCBSINGLE SIDED1 TOOLS USED IN PCB DESIGNING COMPONENTQUANTITY SAW1 FeCl31 [pic] MULTIMETER1 [pic] HAND DRILLER1 [pic] SOLDERING IRON1 [pic] SOLDERING PASTE1 [pic] SOLDERING WIRE1 [pic] CHAPTER 3 PREPARATION AND PROCESS OF PCB DESIGNING Materials: ? Liquid solutions:- Ferric Chloride (Fecl3), Ferric chloride solution,  about 1 liter/ 0,26 gallons Lacquer thinner Safety solutions:- Safety goggles, Soft plastic brush, Clothes iron, Rubber gloves ? layout solutions:- Software for drawing layout. Like:- 1. P-Spice 2. ExpressPCB 3. PCB Wizard 3. 50 Pro 4. EDWinXP ? Good quality magazine pages (A4 Size) (Glossy paper), ? Laser printer ? Scrubbing pad ? Good ventilation ? Paper towel, ? Tin snips ? Drill or rotary tool ? PCB drill bits ? 5-gallon plastic pail full of water ? Single sided 1 ounce copper clad ? A plastic container the board will fit in PREPARATION Print the bottom side layer on a piece of paper from a high quality magazine or Glossy paper.Use one actual page from the magazine or Glossy paper, the thicker and shinier the magazine paper the better, but do not use the cover. You must use a laser printer, not an inkjet. If your printer uses ink cartridges and not toner cartridges, it will not work. If you do not have a laser printer, you can work around this by printing to white paper and using a photocopier set to the darkest setting to copy the layout to the magazine paper. If the paper jams in the printer, you are not using a thick-enough magazine pages. Again, do not use the magazine covers, as they do not work.Magazine pages are used because they work well, and they are cheap! The reason they work is because the paper is very glossy and the toner does not adhere well to the glossy pages. The printing used on the magazine page is ink and it does not come off, but toner does. Toner  is actually a plastic polymer, and different toners may yield varied results. In our experience, a genuine HP toner cartridge was used with great success. The sole purpose of the toner is the protect the copper below it from etching away; you only want the uncovered areas to etch. Next, wash your hands to remove any oils.Keep handling to a minimum once the pages are printed and do not touch the laser printing with your fingers; this could get oils on the printing. Keep pages as flat as possible. [pic][pic] Very carefully, remove the copper clad from the packaging. Do not touch the copper surface for the same reason as above. You can cut the copper clad to size using a tin snip if needed. Use the scrubbing pad to gently buff the surface. Do not use steel wool because it will embed steel into the copper. Clean off the residual dust with a slightly damp paper towel. [pic] Find a hard, very flat, sturdy, heat resistant surface.Empty the water out of the clothes iron and set the iron on the hottest setting. Allow the iron to get hot. [pic] This is both side of a piece of copper clad. Place the blank side facing down and copper side facing up. Align printing/paper onto copper clad board with the printing facing the copper. Do not allow it to move. [pic] [pic] Firmly press the iron onto the back of the magazine paper, sandwiching it between the copper clad and the iron. Pressing hard without moving the iron, hold the iron perfectly still for one full minute. Do not move the iron at all during this minute, and push hard, really hard!Then, for four more minutes, slowly move the iron around making sure to put a lot of pressure on the paper, but not allowing the paper to slide on the copper. When done, let the board fully cool b efore you move it at all. This will allow the toner to adhere to the copper and prevent you from being burned. Put the board in cold water and let soak for five minutes. After five minutes, try to peel the wet paper from the board leaving only the toner/print from your laser printer. Only the toner should be left adhering to the copper. If the paper does not come off easily, let it soak in the water for a while longer.If necessary, rub with your finger to remove any paper, leaving only the toner. It’s ok if there are a few excess paper fibers stuck to the toner. [pic][pic] [pic] If you find not every trace adhered to the copper clad or it is misaligned, use lacquer thinner and paper towel to clean the toner from the copper board and start over. If the traces look good then move on. Inspect the traces carefully, however, because what you see now will be your finished product. [pic] In a well-ventilated area with a fan, add hot water to a plastic container. Gently pour in 1-cup Fecl3, to create the etching solution.Always wear goggles, gloves, and do not inhale the fumes. Do not use any metal containers, measuring cups, stainless steel sinks, or tools with this mixture as this mixture will aggressively etch metal. Acid safety, think â€Å"triple A†, for Always Add the Acid, it’s whatever is in the container that will end up splashing. This etching solution, while made with common chemicals, should command respect. It is dangerous to you and surroundings treat it with respect. Put the board copper side up in the plastic container filled with etching solution. Use a soft plastic brush to gently wipe the board.You will notice the copper begin to dissolve. It takes about 3-4 minutes to get all the exposed copper dissolved. You just have to watch to make sure it is gone in all areas between the traces. Do not leave the board in the etching mix for too long as the traces will dissolve under the toner that is protecting them. [pic]  [pic] Use lac quer thinner (paint thinner and acetone do not work well) and a paper towel to remove any toner left on top of the copper traces. Tinning prevents the copper from oxidizing, which can make it hard to solder to in the future.If you choose, you can tin all the traces with solder and a soldering iron now. This actually makes drilling much easier because it helps to center the drill bit [pic] Print out the top side silkscreen layer on magazine paper and iron this onto the top side, using the same processes as above. Again, run under water and peel off the paper. Now you have the component ID’s on the top side. For layout design we use software: 1. P-Spice 2. ExpressPCBSetup 3. PCB Wizard 3. 50 Pro 4. EDWinXP Drill all the holes for the through-hole parts using the correct size PCB drill bit and rotary tool.Drill large mounting holes with a normal drill. PCB drill bits are carbide and made to drill through fiber glass that would quickly dull standard bits. There are a few very com mon sizes of bits and these are often sold in packs. We use . 0260? for IC holes and . 0310? for resistors and caps. [pic] CHAPTER 4 RESISTANCES [pic] INTRODUCTION A resistor is a two-terminal passive electronic component which implements electrical resistance as a circuit element. When a voltage V is applied across the terminals of a resistor, a current I will flow through the resistor in direct proportion to that voltage. The reciprocal of the onstant of proportionality is known as the resistance R, since, with a given voltage V, a larger value of R further â€Å"resists† the flow of current I as given by Ohm's law: [pic] UNITS The ohm (symbol: ? ) is the SI unit of electrical resistance. An ohm is equivalent to a volt per ampere. Since resistors are specified and manufactured over a very large range of values, the derived units of Milliohm (1 m? = 10? 3 ? ), Kilohm (1 k? = 103 ? ), Megohm (1 M? = 106 ? ) are also in common usage. Resistance is Determined partially by Compo sition,  and is inversely proportional to Cross Sectional Area. [pic]SERIES AND PARALLEL RESISTORS In a series configuration, the current through all of the resistors is the same, but the voltage across each resistor will be in proportion to its resistance. The potential difference (voltage) seen across the network is the sum of those voltages, thus the total resistance can be found as the sum of those resistances: [pic] [pic] As a special case, the resistance of N resistors connected in series, each of the same resistance R is given by NR. Resistors in a parallel configuration are each subject to the same potential difference (voltage), however the currents through them add.The conductance of the resistors then adds to determine the conductance of the network. Thus the equivalent resistance (Req) of the network can be computed: [pic] [pic] The parallel equivalent resistance can be represented in equations by two vertical lines â€Å"||† (as in geometry) as a simplified not ation. For the case of two resistors in parallel, this can be calculated using: [pic] As a special case, the resistance of N resistors connected in parallel, each of the same resistance R, is given by R/N.A resistor network that is a combination of parallel and series connections can be broken up into smaller parts that are either one or the other. For instance, [pic] [pic] POWER DISSIPATION The power P dissipated by a resistor (or the equivalent resistance of a resistor network) is calculated as: [pic] The first form is a restatement of Joule's first law. Using Ohm's law, the two other forms can be derived. The total amount of heat energy released over a period of time can be determined from the integral of the power over that period of time: [pic] Practical resistors are rated according to their maximum power dissipation.The vast majority of resistors used in electronic circuits absorbs much less than a watt of electrical power and require no attention to their power rating. Such resistors in their discrete form, including most of the packages detailed below, are typically rated as 1/10, 1/8, or 1/4 watt. Resistors required to dissipate substantial amounts of power, particularly used in power supplies, power conversion circuits, and power amplifiers, are generally referred to as power resistors; this designation is loosely applied to resistors with power ratings of 1 watt or greater.Power resistors are physically larger and tend not to use the preferred values, color codes, and external packages described below. If the average power dissipated by a resistor is more than its power rating, damage to the resistor may occur, permanently altering its resistance; this is distinct from the reversible change in resistance due to its temperature coefficient when it warms. Excessive power dissipation may raise the temperature of the resistor to a point where it can burn the circuit board or adjacent components, or even cause a fire. There are flameproof resistors that fail (open circuit) before they overheat dangerously.Note that the nominal power rating of a resistor is not the same as the power that it can safely dissipate in practical use. Air circulation and proximity to a circuit board, ambient temperature, and other factors can reduce acceptable dissipation significantly. Rated power dissipation may be given for an ambient temperature of 25  °C in free air. Inside an equipment case at 60  °C, rated dissipation will be significantly less; a resistor dissipating a bit less than the maximum figure given by the manufacturer may still be outside the safe operating area and may prematurely fail.TYPES OF RESISTER Fixed  resistors Variable resistors FIXED RESISTORS The diagram shows the construction of a carbon film resistor. During manufacture, a thin film of carbon is deposited onto a small ceramic rod. The resistive coating is spiraled away in an automatic machine until the resistance between the two ends of the rod is as close as possibl e to the correct value. Metal leads and end caps are added; the resistor is covered with an insulating coating and finally painted with colored bands to indicate the resistor value.Carbon film resistors are cheap and easily available, with values within  ±10% or  ±5% of their marked or ‘nominal' value. Metal film and metal oxide resistors are made in a similar way, but can be made more accurately to within  ±2% or  ±1% of their nominal value. There are some differences in performance between these resistor types, but none which affect their use in simple circuits. COLOUR CODING OF THE RESISTERS [pic] [pic] [pic] VARIABLE RESISTORS Variable resistors consist of a resistance track with connections at both ends and a wiper which moves along th track as you turn the spindle.The track may be made from carbon, cermets (ceramic and metal mixture) or a coil of wire (for low resistances). The track is usually rotary but straight track versions, usually called sliders, are also available. TYPE OF VARIABLE RESISTORS Linear (LIN) and Logarithmic (LOG) tracks Rheostat Potentiometer Presets LINEAR (LIN) AND LOGARITHMIC (LOG) TRACKS Linear (LIN) track means that the resistance changes at a constant rate as you move the wiper. Logarithmic (LOG) track means that the resistance changes slowly at one end of the track and rapidly at the other end, so halfway along the track is not half the total resistance!This arrangement is used for volume (loudness) controls because the human ear has a logarithmic response to loudness so fine control (slow change) is required at low volumes and coarser control (rapid change) at high volumes. It is important to connect the ends of the track the correct way round, if you find that turning the spindle increases the volume rapidly followed by little further change you should swap the connections to the ends of the track. RHEOSTAT This is the simplest way of using a variable resistor.Two terminals are used: one connected to an end of the track, the other to the moveable wiper. Turning the spindle changes the resistance between the two terminals from zero up to the maximum resistance. [pic] If the rheostat is mounted on a printed circuit board you may find that all three terminals are connected! However, one of them will be linked to the wiper terminal. This improves the mechanical strength of the mounting but it serves no function electrically. POTENTIOMETER Variable resistors used as potentiometers have all three terminals connected.These are miniature versions of the standard variable resistor. They are designed to be mounted directly onto the circuit board and adjusted only when the circuit is built. Presets are much cheaper than standard variable resistors so they are sometimes used in projects where a standard variable resistor would normally be used. [pic] PRESETS Multitier presets are used where very precise adjustments must be made. The screw must be turned many times (10+) to move the slider from one en d of the track to the other, giving very fine control. [pic] |[pic] |[pic] | |Preset |Presets |Multitier preset | |(open style) |(closed style) | | | | | | | | | |CHAPTER 5 CAPACITANCES [pic] INTRODUCTION |A capacitor is a passive electronic component that stores energy in the form of an electrostatic field. In its simplest form, a capacitor consists of two | |conducting plates separated by an insulating material called the dielectric. Capacitance is directly proportional to the surface areas of the plates, and is | |inversely proportional to the plates' separation. | |Capacitance also depends on the dielectric constant of the dielectric material separating the plates. | | |Capacitance calculated as XY x 10Z  for the numbers XYZ and the letter indicates the tolerance J, K or M for  ±5%,  ±10% and  ±20% respectively and unit is in pF. | |The standard units of Capacitance, | |farad: F   | |microfarad:  µF (1  µF = 10-6 F) |nanofarad: nF (1 nF = 10-9 F)   | |microfara d: pF (1 pF = 10-12 F) | | | | | | | |FOR CAPACITORS IN PARALLEL | |Capacitors in a parallel configuration each have the same applied voltage. Their capacitances add up.Charge is apportioned among them by size. Using the | |schematic diagram to visualize parallel plates, it is apparent that each capacitor contributes to the total surface area. | |[pic] | | | |FOR CAPACITORS IN SERIES | |Connected in series, the schematic diagram reveals that the separation distance, not the plate area, adds up.The capacitors each store instantaneous charge | |build-up equal to that of every other capacitor in the series. The total voltage difference from end to end is apportioned to each capacitor according to the | |inverse of its capacitance. The entire series acts as a capacitor  smaller  than any of its components. | |[pic] | |Capacitors are combined in series to achieve a higher working voltage, for example for smoothing a high voltage power supply. The voltage ratings, which are | |base d on plate separation, add up.In such an application, several series connections may in turn be connected in parallel, forming a matrix. The goal is to | |maximize the energy storage utility of each capacitor without overloading it. | |Series connection is also used to adapt  electrolytic capacitors  for AC use. | | | |CAPACITOR MAY BE: | |Polarized | |Unpolrized | |POLARIZED CAPACITOR(VALUE MAX THAN 1  µF) | pic] Circuit symbol:   Ã‚  [pic] ELECTROLYTIC CAPACITORS Electrolytic capacitors are polarized and  they must be connected the correct way round, at least one of their leads will be marked + or -. They are not damaged by heat when soldering. There are two designs of electrolytic capacitors;  axial  where the leads are attached to each end (220 µF in picture) and  radial  where both leads are at the same end (10 µF in picture). Radial capacitors tend to be a little smaller and they stand upright on the circuit board. It is easy to find the value of electr olytic capacitors because they are clearly printed with their capacitance and voltage rating.The voltage rating can be quite low (6V for example) and it should always be checked when selecting an electrolytic capacitor. If the project parts list does not specify a voltage, choose a capacitor with a rating which is greater than the project's power supply voltage. 25V is a sensible minimum for most battery circuits. TANTALUM BEAD CAPACITORS Tantalum bead capacitors are polarized and have low voltage ratings like electrolytic capacitors. They are expensive but very small, so they are used where a large capacitance is needed in a small size. Modern tantalum bead capacitors are printed with their capacitance, voltage and polarity in full.However older ones use a color-code system which has two stripes (for the two digits) and a spot of color for the number of zeros to give the value in  µF. The standard  colour code  is used, but for the spot,  grey  is used to mean ? 0. 01 and   white  means ? 0. 1 so that values of less than 10 µF can be shown. A third color stripe near the leads shows the voltage (yellow 6. 3V, black 10V, green 16V, blue 20V, grey 25V, white 30V, pink 35V). The positive (+) lead is to the right when the spot is facing you: ‘when the spot is in sight, the positive is to the right'.For example:   Ã‚  blue, grey, black spot  Ã‚   means 68 µF for example:   Ã‚  blue, grey, white spot  Ã‚   means 6. 8 µF For example:   Ã‚  blue, grey, grey spot  Ã‚   means 0. 68 µF UNPOLARIZED CAPACITOR(MAX. VALUE UPTO 1  µF) [pic] Circuit symbol:   Ã‚  [pic] Small value capacitors are Unpolrized and may be connected either way round. They are not damaged by heat when soldering, except for one unusual type (polystyrene). They have high voltage ratings of at least 50V, usually 250V or so. It can be difficult to find the values of these small capacitors because there are many types of them and several different labeling system s!Many small value capacitors have their value printed but without a multiplier, so you need to use experience to work out what the multiplier should be! For example  0. 1  means 0. 1 µF = 100nF. Sometimes the multiplier is used in place of the decimal point:   For example:   Ã‚  4n7  means 4. 7nF. POLYSTYRENE CAPACITORS This type is rarely used now. Their value (in pF) is normally printed without units. Polystyrene capacitors can be damaged by heat when soldering (it melts the polystyrene! ) so you should use a heat sink (such as a crocodile clip). Clip the heat sink to the lead between the capacitor and the joint. | | | | | | | VARIABLE CAPACITORS Variable capacitors are mostly used in radio tuning circuits and they are sometimes called ‘tuning capacitors'. They have very small capacitance values, typically between 100pF and 500pF (100pF  =  0. 0001 µF). The type illustrated usually has trimmers built in (for making small adjustments – see below) as well as the main variable capacitor. Many variable capacitors have very short spindles which are not suitable for the standard knobs used for variable resistors and rotary switches. It would be wise to check that a suitable knob is available before ordering a variable capacitor.Variable capacitors are  not  normally used in timing circuits because their capacitance is too small to be practical and the range of values available is very limited. Instead timing circuits use a fixed capacitor and a variable resistor if it is necessary to vary the time period. [pic][pic] Variable Capacitor Symbol Variable Capacitor | | | | | | | | TRIMMER CAPACITORS Trimmer capacitors (trimmers) are miniature variable capacitors.They are designed to be mounted directly onto the circuit board and adjusted only when the circuit is built. A small screwdriver or similar tool is required to adjust trimmers. The process of adjusting them requires patience because the presence of your hand and the tool wil l slightly change the capacitance of the circuit in the region of the trimmer! Trimmer capacitors are only available with very small capacitances, normally less than 100pF. It is impossible to reduce their capacitance to zero, so they are usually specified by their minimum and maximum values, for example 2-10pF.Trimmers are the capacitor equivalent of  presets  which are miniature variable resistors. [pic] [pic] Trimmer Capacitor Symbol Trimmer Capacitor CAPACITOR NUMBER CODE A number code is often used on small capacitors where printing is difficult: †¢ the 1st number is the 1st digit, †¢ the 2nd number is the 2nd digit, †¢ The 3rd number is the number of zeros to give the capacitance in pF. †¢ Ignore any letters – they just indicate tolerance and voltage rating.For example:   Ã‚  102  Ã‚  Ã‚  means 1000pF = 1nF   Ã‚  (not 102pF! ) For example:   Ã‚  472J  means 4700pF = 4. 7nF (J means 5% tolerance). |Color Code | |Color |Number | |Black | 0 | |Brown |1 | |Red |2 | |Orange |3 | |Yellow |4 | |Green |5 | |Blue |6 | |Violet |7 | |Grey |8 | |White |9 | CAPACITOR COLOR CODE A color code was used on polyester capacitors for many years. It is now obsolete, but of course there are many still around.The colors should be read like the resistor code, the top three color bands giving the value in pF. Ignore the 4th band (tolerance) and 5th band (voltage rating). For example: Brown, black, orange  Ã‚   means 10000pF = 10nF = 0. 01 µF. Note that there are no gaps between the colors bands, so 2 identical bands actually appear as a wide band. For example: Wide red, yellow  Ã‚   means 220nF = 0. 22 µF. CHAPTER 6 TRANSISTORS INTRODUCTION Transistors amplify current, A transistor may be used as a switch (either fully on with maximum current, or fully off with no current) and as an amplifier (always partly on).The amount of current amplification is called the current gain, symbol hFE. [pic] [pic] Transistor circuit symbols Types of transistor | | | | There are two types of standard transistors, NPN and PNP, with different circuit symbols. The letters refer to the layers of semiconductor material used to make the transistor. Most transistors used today are NPN because this is the easiest type to make from silicon. If you are new to electronics it is best to start by learning how to use NPN transistors. The leads are labeled base (B), collector (C) and emitter (E). These terms efer to the internal operation of a transistor but they are not much help in understanding how a transistor is used, so just treat them as labels. CONNECTING Transistors have three leads which must be connected the correct way round. Please take care with this because a wrongly connected transistor may be damaged instantly when you switch on. If you are lucky the orientation of the transistor will be clear from the PCB or strip board layout diagram, otherwise you will need to refer to a supplier's catalogue to identify the leads. The dr awings on the right show the leads for some of the most common case styles.Please note that transistor lead diagrams show the view from below with the leads towards you. This is the opposite of IC (chip) pin diagrams which show the view from above. [pic] TRANSISTOR CODES There are three main series of transistor codes used in the UK: ? Codes beginning with B (or A), for example BC108, BC478 the first letter B is for silicon, A is for germanium (rarely used now). The second letter indicates the type; for example C means low power audio frequency; D means high power audio frequency; F means low power high frequency. The rest of the code identifies the particular transistor.There is no obvious logic to the numbering system. Sometimes a letter is added to the end (e. g. BC108C) to identify a special version of the main type, for example a higher current gain or a different case style. If a project specifies a higher gain version (BC108C) it must be used, but if the general code is given (BC108) any transistor with that code is suitable. ? Codes beginning with TIP, for example TIP31A TIP refers to the manufacturer: Texas Instruments Power transistor. The letter at the end identifies versions with different voltage ratings. ? Codes beginning with 2N, for example 2N3053The initial ‘2N' identifies the part as a transistor and the rest of the code identifies the particular transistor. There is no obvious logic to the numbering system. CHOOSING A TRANSISTOR Most projects will specify a particular transistor, but if necessary you can usually substitute an equivalent transistor from the wide range available. The most important properties to look for are the maximum collector current IC and the current gain hFE. To make selection easier most suppliers group their transistors in categories determined either by their typical use or maximum power rating. NPN transistors | |Code | |PNP transistors | |Code |Structure | |Case  style |There is a diagram showing the lead s for some of the most common case styles in the Connecting section above.This information | | |is also available in suppliers' catalogues. | |IC max. |Maximum collector current. | |VCE max. |Maximum voltage across the collector-emitter junction. | | |You can ignore this rating in low voltage circuits. | |hFE |This is the current gain (strictly the DC current gain). The guaranteed minimum value is given because the actual value varies | | |from transistor to transistor – even for those of the same type! Note that current gain is just a number so it has no units. | | The gain is often quoted at a particular collector current IC which is usually in the middle of the transistor's range, for | | |example ‘[email  protected]' means the gain is at least 100 at 20mA. Sometimes minimum and maximum values are given. Since the gain is | | |roughly constant for various currents but it varies from transistor to transistor this detail is only really of interest to | | |experts. | | | | | |Why hFE? | |It is one of a whole series of parameters for transistors, each with their own symbol. There are too many to explain here. | |Ptot max. |Maximum total power which can be developed in the transistor, note that a heat  sink will be required to achieve the maximum | | |rating. This rating is important for transistors operating as amplifiers; the power is roughly IC ? VCE. For transistors | | |operating as switches the maximum collector current (IC max. is more important. | |Category |This shows the typical use for the transistor, it is a good starting point when looking for a substitute. Catalogues may have | | |separate tables for different categories. | |Possible  substitutes |These are transistors with similar electrical properties which will be suitable substitutes in most circuits. However, they may | | |have a different case style so you will need to take care when placing them on the circuit board. | THE NPN TRANSISTORIn the previous tutorial we saw tha t the standard Bipolar Transistor or BJT comes in two basic forms. An NPN (Negative-Positive-Negative) type and a PNP (Positive-Negative-Positive) type, with the most commonly used transistor type being the NPN Transistor. We also learnt that the transistor junctions can be biased in one of three different ways – Common Base, Common Emitter and Common Collector. In this tutorial we will look more closely at the â€Å"Common Emitter† configuration using NPN Transistors with an example of the construction of a NPN transistor along with the transistors current flow characteristics is given below. pic] THE COMMON EMITTER CONFIGURATION As well as being used as a semiconductor switch to turn load currents â€Å"ON† or â€Å"OFF† by controlling the Base signal to the transistor in ether its saturation or cut-off regions, NPN Transistors can also be used in its active region to produce a circuit which will amplify any small AC signal applied to its Base terminal with the Emitter grounded. If a suitable DC â€Å"biasing† voltage is firstly applied to the transistors Base terminal thus allowing it to always operate within its linear active region, an inverting amplifier circuit called a single stage common emitter amplifier is produced.One such Common Emitter Amplifier configuration of an NPN transistor is called a Class A Amplifier. A â€Å"Class an Amplifier† operation is one where the transistors Base terminal is biased in such a way as to forward bias the Base-emitter junction. The result is that the transistor is always operating halfway between its cut-off and saturation regions, thereby allowing the transistor amplifier to accurately reproduce the positive and negative halves of any AC input signal superimposed upon this DC biasing voltage. Without this â€Å"Bias Voltage† only one half of the input waveform would be amplified.This common emitter amplifier configuration using an NPN transistor has many applications but is commonly used in audio circuits such as pre-amplifier and power amplifier stages. With reference to the common emitter configuration shown below, a family of curves known as the Output Characteristics Curves relates the output collector current, (Ic) to the collector voltage, (Vce) when different values of Base current, (Ib) are applied to the transistor for transistors with the same ? value. A DC â€Å"Load Line† can also be drawn onto the output characteristics curves to show all the possible operating points when ifferent values of base current are applied. It is necessary to set the initial value of Vce correctly to allow the output voltage to vary both up and down when amplifying AC input signals and this is called setting the operating point or Quiescent Point, Q-point for short and this is shown below. SINGLE STAGE COMMON EMITTER AMPLIFIER CIRCUIT |[pic] | CHAPTER 7 CONDENSER MIC [pic] INTRODUCTION Microphones are a type of  transducer  Ã¢â‚¬â€œ a device w hich converts energy from one form to another.Microphones convert acoustical energy (sound waves) into electrical energy (the audio signal). Different types of microphone have different ways of converting energy but they all share one thing in common: The  diaphragm. This is a thin piece of material (such as paper, plastic or aluminum) which vibrates when it is struck by sound waves. In a typical hand-held mic like the one below, the diaphragm is located in the head of the microphone. LOCATION OF MICROPHONE DIAPHRAGM [pic] When the diaphragm vibrates, it causes other components in the microphone to vibrate.These vibrations are converted into an electrical current which becomes the audio signal. Note: At the other end of the audio chain, the loudspeaker is also a transducer – it converts the electrical energy back into acoustical energy. TYPES OF MICROPHONE There are a number of different types of microphone in common use. The differences can be divided into two areas: (a) T HE TYPE OF CONVERSION TECHNOLOGY THEY USE this refers to the technical method the mic uses to convert sound into electricity. The most common technologies are dynamic, condenser, ribbon and crystal.Each has advantages and disadvantages, and each is generally more suited to certain types of application. The following pages will provide details. (b) THE TYPE OF APPLICATION THEY ARE DESIGNED FOR some mics are designed for general use and can be used effectively in many different situations. Others are very specialized and are only really useful for their intended purpose. Characteristics to look for include directional properties, frequency response and impedance (more on these later). MIC LEVEL & LINE LEVEL The electrical current generated by a microphone is very small.Referred to as mic level, this signal is typically measured in mill volts. Before it can be used for anything serious the signal needs to be amplified, usually to line level (typically 0. 5 -2V). Being a stronger and mo re robust signal, line level is the standard signal strength used by audio processing equipment and common domestic equipment such as CD players, tape machines, VCRs, etc. This amplification is achieved in one or more of the following ways: †¢ Some microphones have tiny built-in amplifiers which boost the signal to a high mic level or line level. The mic can be fed through a small boosting amplifier, often called a line amp. †¢ Sound mixers have small amplifiers in each channel. Attenuators can accommodate mics of varying levels and adjust them all to an even line level. †¢ The audio signal is fed to a power amplifier – a specialized amp which boosts the signal enough to be fed to loudspeakers. Audio signal is fed to a power amplifier – a specialized amp which boosts the signal enough to be fed to loudspeakers. CONDENSER MICROPHONES Condenser  means  capacitor, an electronic component which stores energy in the form of an electrostatic field.The term condenser  is actually obsolete but has stuck as the name for this type of microphone, which uses a capacitor to convert acoustical energy into electrical energy. Condenser microphones require power from a battery or external source. The resulting audio signal is stronger signal than that from a dynamic. Condensers also tend to be more sensitive and responsive than dynamics, making them well-suited to capturing subtle nuances in a sound. They are not ideal for high-volume work, as their sensitivity makes them prone to distort. HOW CONDENSER MICROPHONES WORK A capacitor has two plates with a voltage between them.In the condenser mic, one of these plates is made of very light material and acts as the diaphragm. The diaphragm vibrates when struck by sound waves, changing the distance between the two plates and therefore changing the capacitance. Specifically, when the plates are closer together, capacitance increases and a charge current occurs. When the plates are further apart, ca pacitance decreases and a discharge current occurs. A voltage is required across the capacitor for this to work. This voltage is supplied either by a battery in the mic or by external phantom power.Phantom power is a means of distributing a DC current through audio cables to provide power for microphones and other equipment. The supplied voltage is usually between 12 and 48 Volts, with 48V being the most common. Individual microphones draw as much current from this voltage as they need. [pic] THE ELECTRET CONDENSER MICROPHONE The Electret condenser mic uses a special type of capacitor which has a permanent voltage built in during manufacture. This is somewhat like a permanent magnet, in that it doesn't require any external power for operation.However good Electret condensers mics usually include a pre-amplifier which does still require power. Other than this difference, you can think of an Electret condenser microphone as being the same as a normal condenser. Technical Notes: †¢ Condenser microphones have a flatter frequency response than dynamics. A condenser mic works in much the same way as an electrostatic tweeter (although obviously in reverse) DIRECTIONAL PROPERTIES Every microphone has a property known as  directionality. This describes the microphone's sensitivity to sound from various directions.Some microphones pick up sound equally from all directions; others pick up sound only from one direction or a particular combination of directions. The types of directionality are divided into three main categories: 1. OMNI DIRECTIONAL Picks up sound evenly from all directions (Omni means â€Å"all† or â€Å"every†). 2. UNIDIRECTIONAL Picks up sound predominantly from one direction. 3. BIDIRECTIONAL picks up sound from two opposite directions. CHAPTER 8 IC LM386N [pic] INTRODUCTION The LM386 is a power amplifier designed for use in low voltage consumer applications.The gain is internally set to 20 to keep external part count low, but the a ddition of an external resistor and capacitor between pins 1 and 8 will increase the gain to any value from 20 to 200. The inputs are ground referenced while the output automatically biases to one-half the supply voltage. The quiescent power drain is only 24 mill watts when operating from a 6 volt supply, making the LM386 ideal for battery operation. FEATURES Battery operation Minimum external parts Wide supply voltage range: 4V–12V or 5V–18V Low quiescent current drain: 4mA Voltage gains from 20 to 200Ground referenced input Self-centering output quiescent voltage Low distortion: 0. 2% (AV = 20, VS = 6V, RL = 8W, PO =125mW, f = 1 kHz) Available in 8 pin MSOP package APPLICATION HINTS GAIN CONTROL To make the LM386 a more versatile amplifier, two pins (1 and 8) are provided for gain control. With pins 1 and 8 open the 1. 35 k? resistor sets the gain at 20 (26 dB). If a capacitor is put from pin 1 to 8, bypassing the 1. 35 k? resistor, the gain will go up to 200 (46 dB) . If a resistor is placed in series with the capacitor, the gain can be set to any value from 20 to 200.Gain control can also be done by capacitive coupling a resistor (or FET) from pin 1 to ground. Additional external components can be placed in parallel with the internal feedback resistors to tailor the gain and frequency response for individual applications. For example, we can compensate poor speaker bass response by frequency shaping the feedback path. This is done with a series RC from pin 1 to 5 (paralleling the internal 15 k? resistor). For 6 dB effective bass boost: R. 15 k? , the lowest value for good stable operation is R = 10 k? if pin 8 is open. If pins 1 and 8 are bypassed then R as low as 2 k? an be used. This restriction is because the amplifier is only compensated for closed-loop gains greater than 9. INPUT BIASING The schematic shows that both inputs are biased to ground with a 50 kW resistor. The base current of the input transistors is about 250 nA, so the inputs are at about 12. 5 mV when left open. If the dc source resistance driving the LM386 is higher than 250 kW it will contribute very little additional offset (about 2. 5 mV at the input, 50 mV at the output). If the dc source resistance is less than 10 kW, then shorting the unused input to ground will keep the offset low (about 2. mV At the input, 50 mV at the output). For dc source resistances between these values we can eliminate excess offset by putting a resistor from the unused input to ground, equal in value to the dc source resistance. Of course all offset problems are eliminated if the input is capacitive coupled. When using the LM386 with higher gains (bypassing the 1. 35 kW resistors between pins 1 and 8) it is necessary to bypass the unused input, preventing degradation of gain and possible instabilities. This is done with a 0. 1 ? F capacitor or a short to ground depending on the dc source resistance on the driven input.CHAPTER 9 EARPHONE [pic] INTRODUCTION Headphones are a pair of small loudspeakers, or less commonly a single speaker, held close to a user's ears and connected to a signal source such as an audio amplifier, radio, CD player or portable media player. They are also known as stereophones, headsets or, colloquially cans. The in-ear versions are known as earphones or earbuds. In the context of telecommunication, the term headset is used to describe a combination of headphone and microphone used for two-way communication, for example with a telephone.The telephone earpiece such as the one pictured at the right was common at the beginning of the 20th century. Headphones originated from the earpiece, and were the only way to listen to audio signals before amplifiers were developed. The first truly successful set was developed by Nathaniel Baldwin, who made them by hand in his kitchen and sold them to the U. S. Navy. Very sensitive headphones such as those manufactured by Brandes around 1919 were commonly used for early radio work. These early headphones used moving iron drivers, either single ended or balanced armature.The requirement for high sensitivity meant no damping was used, thus the sound quality was crude. They also had very poor comfort compared to modern types, usually having no padding and too often having excessive clamping force to the head. Their impedance varied; headphones used in telegraph and telephone work had an impedance of 75 ohms. Those used with early wireless radio had to be more sensitive and were made with more turns of finer wire; impedance of 1,000 to 2,000 ohms was common, which suited both crystal sets and triode receivers.In early powered radios, the headphone was part of the vacuum tube's plate circuit and had dangerous voltages on it. It was normally connected directly to the positive high voltage battery terminal, and the other battery terminal was securely earthed. The use of bare electrical connections meant that users could be shocked if they touched the bare headphone connections while adjusting an uncomfortable headset. APPLICATIONS Headphones may be used both with fixed equipment such as CD or DVD players, home theater, personal computers and with portable devices (e. g. igital audio player/mp3 player, mobile phone, etc. ). Cordless headphones are not connected via a wire, receiving a radio or infrared signal encoded using a radio or infrared transmission link, like FM, Bluetooth or Wi-Fi. These are actually made of powered receiver systems of which the headphone is only a component, these types of cordless headphones are being used more frequently with events such as a Silent disco or Silent Gig. In the professional audio sector headphones are used in live situations by disc jockeys with a DJ mixer and sound engineers for monitoring signal sources.In radio studios, DJs use a pair of headphones when talking to the microphone while the speakers are turned off, to eliminate acoustic feedback and monitor their own voice. In studio recordings, musicians and si ngers use headphones to play along to a backing track. In the military, audio signals of many varieties are monitored using headphones. Wired headphones are attached to an audio source. The most common connection standards are 6. 35mm ( ) and 3. 5mm TRS connectors and sockets. The larger 6. 35mm connector tending to be found on fixed location home or professional equipment.Sony introduced the smaller, and now widely used, 3. 5mm â€Å"minijack† stereo connector in 1979, adapting the older monophonic 3. 5mm connector for use with its Walkman portable stereo tape player and the 3. 5mm connector remains the common connector for portable application today. Adapters are available for converting between 6. 35mm and 3. 5mm devices. BENEFITS AND LIMITATIONS [pic] Headphones may be used to prevent other people from hearing the sound either for privacy or to prevent disturbance, as in listening in a public library.They can also provide a level of sound fidelity greater than loudspeaker s of similar cost. Part of their ability to do so comes from the lack of any need to perform room correction treatments with headphones. High quality headphones can have an extremely flat low-frequency response down to 20  Hz within 3dB. However, rated frequency response distortion figures do not provide information on what character the sound reproduced at that frequency will be. Marketed claims such as ‘frequency response 4  Hz to 20  kHz' are usually overstatements; the product's response at frequencies lower than 20  Hz is typically very small.Headphones are also useful for video games that use 3D positional audio processing algorithms, as they allow players to better judge the position of an off-screen sound source (such as the footsteps of an opponent). Although modern headphones have been particularly widely sold and used for listening to stereo recordings since the release of the Walkman, there is subjective debate regarding the nature of their reproduction of stereo sound. Stereo recordings represent the position of horizontal depth cues (stereo separation) via volume differences of the sound in question between the two channels.When the sounds from two speakers mix, they create the phase difference the brain uses to locate direction. Through most headphones, because the right and left channels do not combine in this manner, the illusion of the phantom center can be perceived as lost. Hard panned sounds will also only be heard only in one ear rather than from one side. This latter point is of particular importance for earlier stereo recordings which were less sophisticated, sometimes playing vocals through one channel and music through the other.Binaural recordings use a different microphone technique to encode direction directly as phase, with very little amplitude difference (except above 2  kHz) often using a dummy head, and can produce a surprisingly life-like spatial impression through headphones. Commercial recordings almost alwa ys use stereo recording, because historically loudspeaker listening has been more popular than headphone listening. It is possible to change the spatial effects of stereo sound on headphones to better approximate the presentation of speaker reproduction by using frequency-dependent cross-feed between the channels, or—better still—aBlumlein shuffler (a custom EQ employed to augment the low-frequency content of the difference information in a stereo signal). While cross-feed can reduce the unpleasantness that some listeners find with hard panned stereo in headphones, the use of a dummy head during recording, with artificial pinnae, can allow on playback through headphones, the experience of hearing the performance as though situated in the position of the dummy head. Optimal sound is achieved when the dummy head matches the listener's head, since pinnae vary greatly in size and shape.Headsets can have ergonomic benefits over traditional telephone handsets. They allow cal l center agents to maintain better posture instead of tilting their head sideways to cradle a handset. Over time, headphone cables fail. The common scenario in which a replacement might need to be purchased is the physical breakdown of copper wiring at junction points on the cord (at the TRS jack, or at the point of connection to the headphone). These are the sites of greatest and most stressful motion on a cord and so they are typically fitted with some kind of strain relief.CHAPTER 10 APPLICATIONS,FUTURE SCOPE AND CONCLUSION APPLICATIONS IN SPY AGENCIES [pic] 1. To hear private conversations of anyone. 2. To caught anyone doing any illegal work. SOUND AMPLIFIER 1. To amplify the low power audio signals. 2. In hearing aids. SOME OTHER APPLICATIONS As a spy can be use in 1. Concert halls 2. Court houses 3. Conference rooms 4. Embassies 5. Government facilities 6. Recording studios. 7. In army. 8. Secret agencies. FUTURE SCOPE [pic]Spy ears are widely using in the spy agencies due to its amplifying capability of the low power audio signals into the high power audible audio signals due to this property of spy ears we can use it to hear the private conversations of anyone, In the present time spy ears are very popular to hear the private conversations and it can also be used as a hearing aid for the persons who do not have the ability to hear the voice correctly. Spy ears amplifies the sound so it amplify the sounds of low signal for the person and he can clearly hear the voice of the other person and other things.If we consider the future prospectus than we can imagine that spy ears will become very popular in the future due to its hiding capability because we all know that at what rate corruption and illegal things are increasing so due to help of this equipment we can hear the conversation of any suspicious person and stop him. Spy ear can easily hide so they are very difficult to find and the other person can not see it and we can easily hear the conversation of the peritcular person and he van not imagine than someone hearing his conversation and his secret is now opened.TYPES OF SPY EAR In the present condition spy ear are of two types: 1. Wired. 2. Wireless. 1. WIRED [pic] ? Wired spy ear for the short distance use only. ? We can only hear the sound of the person who is near the spy ear. ? Due to its short distance use they are now uses very less in compare to wireless spy ears. ? Wired spy ear can be used to hear the voice of the person at bus stop, school, colleges and many other places without getting his/her attention towards us. ? Wired spy ear can also be used as a hearing aid because of its audio amplifying capability.But if we see in present condition the use of wired spy ears is very less because wireless spy ears can cover a wide range than the wired spy ears, many spy agencies and private security forces use wireless spy ear for the long distance communication. 2. WIRELESS [pic] ? Wire less spy ears are widely using for th e long distance conversation due to its capability of receiving and sending signals from the long distance. ? Wire less spy ears are widely using in spy agencies and private security agencies to connect an long distance communication. ? Wire less spy ear consist of a receiving and a transmitting device. Both device are fabricated on the separate board so they have the property of long distance connectivity and the voice quality is also good. ? Wire less spy ears are also using with the mobile equipments. Transmitting device contain a sim and from our we call on it and after the connectivity we can hear and transmit our voice without getting the attention of the other person. CONCLUSION By the above all discussion at last we can say that the spy ear is very helpful at many levels such as PRIVATE LEVEL †¢ We can hear the conversation of our neighbours without getting their attention. We can hear the conversation of people at bus stop, school, colleges without looking towards them †¢ We can use it as h sound amplifier for low voice signals etc. COUNTRY LEVEL †¢ We can use spy ear to hear the conversation of any suspected person and can know that what is going on. †¢ We can use it against any corrupted person and send him in the jail. At last we can say that the spy ears are very helpful for private as well as national security purpose and in future they will become more popular due to there ability of hiding and catching low frequency voice signal. ———————– IASSCOM FORTUNE INSTITUTE OF TECHNOLOGY 1

Outline the factors which could contribute to employee stress in the Essay

Outline the factors which could contribute to employee stress in the workplace. Discuss what possible measures could be taken to reduce stress in employees - Essay Example Yassi asserts that there are five basic factors that result in workplace stress, these include: factors that are inconsistent with the job, position in the institute, development of career, relationships that are interpersonal in nature and structure of the organization (MINER, 2002, p.344). The first factor is related to an employee’s ability to cope with number of operational working hours, desired rate of production, the environment of the organization that can be seen, and the quality of work expected by the mangers of the organization. For example: individuals who work late at night experience deterioration of health due to sleepless nights. The second factors are related to the hierarchical level of the organization in which an employee is operating. Individuals who are situated at the top level of an organization are expected to experience more stress as their responsibility is much greater than those working in the lower level of the management (BLONNA, 2010, p.53). Fo r example: Those in the top level of the management have to perform several tasks at the same time. The third factor is related to the how secure the job is for an individual and whether there are promotional benefits offered by the organization or not. For example: employees are unsure whether they will be able to keep their jobs if changes in technology are implemented by the organization. The fourth factor of stress is related to the relationship of the employee with other employees of the organization and the management level of the organization. An organization itself is a society where different elements have to interact with each other to ensure that the entire unit operates in a collective manner. If employees do not interact with each other and help each other, work pressure increases and results in stress. Organizational environment is a major

Online Radio & Globalization Research Paper Example | Topics and Well Written Essays - 2500 words

Online Radio & Globalization - Research Paper Example Commercial entities, instead of paying enormous amounts of money for radio advertisements, and sponsoring target programs, can develop content that attracts and retains an audience (Kozamernik, & Mullane, p. 13). Internet radio has an immense impact on globalisation because it targets a wider global audience, and can influence commerce and culture. Internet radio does not only impact on globalisation but it also impacts on commercial trends. It impacts on advertising, management, production, marketing and radio listenership. With the advent of internet radio, business shifted their attention to seeking for advertising space in online radio because of its international nature. Online radio also changed radio listenership; international listeners could tune in to an online station and listen to music that may not be available in their local radio stations. This means that expatriates can listen to radio stations from their native countries, and in a way influence the locals to listen t o this radio stations. Online radio is also appealing to the youths who are internet savvy and compose the highest number of radio listeners (Kozamernik, & Mullane, p. 18). Radio incorporates signal transmission in space using electromagnetic waves that have frequencies below visible light. This waves, electromagnetic waves, travel by oscillating electromagnetic fields in air and vacuum space. ... Ships used radio by sending Morse code to land in 18th century. The importance of radio came to the fore during the sinking of the RMS Titanic. Operators on board the Titanic communicated with nearby vessels using radio. During the First and Second World Wars, radio gained immense usage by the navies and the armies (Kozamernik, & Mullane, p. 5). Commercial radio broadcasting in 1920s changed the landscape for radio usage. Besides, radio program relay, point-to-point broadcasting and telephone messaging became widespread in 1920s. Presently, radio has taken many forms, which include mobile communication, wireless networks and radio broadcasting. Commercial radio broadcasting includes music, news, comedies, dramas, variety shows and numerous forms of entertainment. During the golden age of radio, it gained uniqueness as a method of presentation because it only used sound. Technological developments brought other means of mass media, and the currently, online based services takeover fro m some of the services that people used to enjoy. Internet or online radio is growing in acceptance and may overtake conventional radio within no time. Internet radio has changed aspects of radio such as advertisement, its globalization role, listenership, production, marketing, education and entertainment (Kozamernik, & Mullane, p. 7). Internet or online radio uses the internet to transmit audio services. Internet radio primarily involves streaming media, which presents listeners with non-stop audio streaming. This means that the audio stream cannot be replayed or paused but can be stopped. Internet radio is similar to conventional radio, but the difference is in the mode

Role and Functioning of Stock Markets Coursework

Role and Functioning of Stock Markets - Coursework Example Moreover, securities markets are further broken down into a primary market and a secondary market. A  stock market  is a private or public market for the trading of  stocks or shares  in companies at an  agreed upon price. These include securities listed on a  stock exchange  as well as those traded privately, also known as over the counter securities. A  stock market  is also known as an equity market (Papadopoulos, 2010). Primary Market and its Role: Primary market is the market in which newly listed companies issue their shares to be traded for the first time, changing hands from the newly listed company to the investors, mostly these first time investors are institutional investors for example pension funds, investment banks, credit unions. This process allows a company, the issuers of stocks, to acquire capital by offering their stocks to investors who in return would supply the capital required. Thereby making primary market that part of capital markets that d eals with the issuance of new securities. Privately or Publicly listed Companies, governments or public sector institutions can obtain funding for there projects in this way. Security dealers act as a bridge to link lender to the borrower of the fund. The process of selling new shares is called underwriting. The new stock issue is called an initial public offering (IPO). Dealers earn a commission that is part of the price of the security offering. (Papadopoulos, 2010). Secondary Market and its Role: The secondary market is an organized marketplace for securities. After the initial offering it is through this market that the general public gets the opportunity to be a stakeholder in a company. Licensed broker assist in the buying selling of these securities, along with the exchanges specialized trading system, in accordance with the rules and regulations established by the exchange (Alfaro, Chanda, Kalemi-Ozcan, and Sayek, 2004). When it comes to secondary market, investors in this m arket purchase securities from other investors in the market, rather than from the issuing company. In any secondary market transaction the cash proceeds go to the investors rather than the entity of which the original securities belonged to. The prices of the securities in this market are determined by the forces of supply and demand, this rule applies to every stock available for trading (Demirguc-Kunt and Levine, 1996). Overview of the functions of Stock Market: There are several  functions of stock market that makes it an integral part of the economy. It most important role is the channelling of funds or transferring of capital from investors to users of capital. This role of stock exchanges allows corporations looking to raise capital for enhancing their productive capabilities from investors in the primary market. The secondary market facilitates trade between buyers and sellers of stock and thereby enabling the investors to reach the true price of the stock or commodity. Th is feature of stock market is known as continuous pricing function. This feature enables interested parties to know at any time, what the price of a stock is. Price quotes can be accessed through financial websites and financial channels. This allows investors to assess the worth of their investment in a particular stock (Kale, Dyer, and Sing, 2002).   Stock market also plays the role of fair pricing. The workings of the stock market enable buyers and

Challenges of Tourism in Orlando Essay Example | Topics and Well Written Essays - 750 words

Challenges of Tourism in Orlando - Essay Example The growth of Orlando from a small town to a large internationally-recognized tourist city has been shaped by several factors. The hostilities between Settlers and Seminole Indians resulted in Florida’s statehood. In the 1860s, cattle ranching was the widely practiced activity in Central Florida. However, the practice was characterized by chaos resulting in the violent cattle wars of the 1860s (Frommers, 2015). Earlier, infrastructure was absent, and its development began in the 1870s. As the years progressed, cattle ranching was abandoned, and residents picked up citrus farming, industrialization, and real estate development. Fires and fruit-fly infestation rolled back the gains, but infrastructure expansion and the population growth continued during the Second World War.Postwar prosperity of Orlando was contributed by the strong financial and transportation infrastructure developed during the Second World War. Also, the advent of the air-conditioner attracted more people to the city. The bustling tourism industry discharged millions of dollars into the local economy and the massive industrialization in the 1950s contributed to rapid growth. Elsewhere, the prosperity has been characterized by the absence of civil behavior. The cattle wars of 1860’s saw the seeds for gunfights, bar brawls, and murders. The problem of cattle rustling is an activity that petered down, but has persisted up to now. Orlando’s tourism industry is characterized by theme parks populated with hotel chains and numerous restaurants.

New Technology in the Medical Field Essay Example | Topics and Well Written Essays - 500 words - 1

New Technology in the Medical Field - Essay Example many healthcare organizations have come up with privacy and security policies that govern the access, use and exposure of organization’s information in order to minimize such risks. An analysis of the privacy and security policies of three recognized healthcare organizations namely Beth Israel Deaconess Medical Center (BIDMC), Mayo Foundation and Georgetown University Medical Centers reveals some themes that are among them. For all the three healthcare organisations unauthorised access of the organisation’s information is not allowed. This could be those that are stored in computers or those produced as hard copies. In relation to this, there is no unauthorised alteration, revision, transmission or modification of the organisations information or other information within the organisation’s system (Georgetown University Medical Centers, 2007, Mayo Foundation, 2002 and BIDMC Technology Resources Policy, 2007). For all confidential information or programs installed in the organisation’s computers, the staff must get authority from the organisations information officer or office in order to access, delete or modify them. All information deemed to be confidential is protected from external access and their release or exposure constitutes a breach of the security and privacy policies. All staff are not allowed to use the organisations IT for activities that are not related to the organisation’s business activities so as to limit the availability of the network resources to other people. Remote access to organisation’s information is not allowed except for selected workstations or persons authorised by the chief information officer. There are some security and privacy policies that differ significantly between the three healthcare organizations. An example are policies relating to personal privacy when using the organization’s computer information or technology resources. In Mayo Foundation, no one has the permission to access a computer using another

Article summary Essay Example | Topics and Well Written Essays - 250 words - 8

Article summary - Essay Example Many fast-food workers complain that they are working too hard and can hardly make both ends meet. â€Å"We deserve a good life, too† claims Jasmine Almodovar, the protest participant. The organizers expect almost 100 cities to take part into the protest. They are also to engage sit-ins in more than a dozen of cities. One more step is to have home-care workers join. It would definitely let workers and union leaders attract even more attention of great masses of population. At the same time, fast-food chains and many franchise operators refuse to meet the claims of the protesters, since so heavy expenses would certainly make their business unprofitable. However, they acknowledge the human right for non-violent protests. Supposedly, it could be possible to increase salaries on a gradual basis. Though, business model of many fast-food corporations might be based on  minimum-survival profit. It means that the demands of their employees are unlikely to be satisfied. Nevertheless, the campaign may be considered fruitful. The protest persuaded many people that $15 is quite an adequate wage for many workers. Certain cities, such as San Francisco, are to adopt such a wage floor in the nearest future. Also Ms. Henry, the president of the Service Employees International Union, said that this movement made people believe that the impossible may come true one

Alzheimer's disease Essay Example | Topics and Well Written Essays - 1250 words

Alzheimer's disease - Essay Example lois Alzheimer first detected and described this disease in 1907 in Auguste Deter, a middle aged woman who was diagnosed with the dementia and some disorders in her brain function. Untill 1970s this disease defined as a rare condition that affect old people, but Robert Katzman proved that Alzheimer`s disease is not a normal part of aging and it is the same condition as senile dementia. The statistic shows that Alzheimer`s disease affected approximately 26.6 million of people in 2006. Clinical trials predict that prevalence of the Alzheimer`s will be 1 out of 85 people by 2050 worldwide. (Web MD, 2014) There are several types of Alzheimer`s disease depending on the severity. They include mild and moderate Alzheimer`s disease. Mild Alzheimer`s is an early stage of this disease that characterized with temporary memory loss. Patients at this stage usually have problems with complicated tasks, forget where they put their things, get lost, cannot find words to explain their thoughts and have changeable mood. People can normally survive with this type of Alzheimer`s but they required appropriate treatment to reduce possible symptoms. (FÃ ¶rstl H, 1999) Neuropsychological testing can detect this type of Alzheimer`s disease because the symptoms can be confusing with aging. Moderate Alzheimer`s is the most complicated and longest stage of the disease. It is progressive and can leads to overall memory lost. Patients with this type of Alzheimer`s usually do not remember their biography, family, friends and have problems with thinking and language. In this stage patient`s cannot normally live without help of the caregivers and treatment. It can last for years and finally lead to death. People with Alzheimer`s disease can live approximately 7 years after diagnosis. Only in 3% of all Alzheimer`s cases patients lived for 14 years after diagnosis. (Wenk GL,2003) At the cellular level Alzheimer`s disease mainly affect neurons in the cerebral cortex. Neurons lose their ability to

Genetically Modified Organisms, Nutritious Foods Research Paper

Genetically Modified Organisms, Nutritious Foods - Research Paper Example Polan (394) supports genetic engineering by noting that it has come up with bananas and tomatoes that produce the vaccine. He goes ahead to note that genetic engineering produces crops like New leaves that can protect themselves from pest without the need for pesticides. The two qualities floated above help protect the environment from air and water pollution which is brought about by the chemicals present in the pesticides used to get rid of pests in the farms. The chemicals find a way into the ecosystem and can bring about detrimental effects to the soil by degrading it, air by affecting respiratory tracks of humans and hydrology by entering the hydrology cycle. GMO hence help reduce the use of these harmful pesticides. Polan uses the above statement to refer to the tight competition that apples face from other sugary food in the market. He notes that ‘And in a culture of easy sweetness apples now had to compete with every other kind of sugary snack food in the supermarketâ⠂¬â„¢ (136). He even goes ahead to note that Red and Golden delicious known for their exceptional sweetness came to dominate the monoculture that the orchards had become. The above statements imply that the breeders who produce sugary apples that compete with junk food rely heavily on the two breeds of apple that is, Red and Golden Delicious. â€Å"A century ago there were several thousand different varieties of the apple in commerce.† (137). Polan says that all these have a common parentage of either of the following breeds: Red Delicious, Golden Delicious, Jonathan, Mackintosh and Cox’s Orange Pippin.

Debate on Genetically Modified Food Essay Example for Free

Debate on Genetically Modified Food Essay For millions of years, the world has evolved and developed, by selective breeding to adapt into the society, which it is today. Natural adaptations and changes have occurred in various species of plants and animals, which even modern scientists cannot explain. Our world has survived for well forever, without genetically enhanced produce, so why should it invade humanity now, just because we can? Many scientists, who are in favour of GM foods, claim that it is simply the next step on from selective breeding; however they seem to have overlooked one difference. Genetic modification of anything requires the introduction of alien genes into a species, to modify it and this is certainly not a natural process. For example, GM Soya has been modified using genes that will make it resistant to certain herbicides, such as roundup. Although this may seem like a good thing on the surface, what happens when the pollen from these GM foods is passed on to native species? Aspects like this seem to have been overlooked. It is also a worry, because genetic engineering can be very unpredictable and the damaging effects of GM foods irreversible; if left unconfined it could get out of control. It is possible to end up creating harmful characteristics such as toxins unawares. This doesnt necessarily condemn GMOs but it proves the unpredictability of genetic manipulation. The establishment for GM foods is keen to cover up any findings, which may turn people against GM foods, (possibly due to the huge profits involved). One particular scientist, in a report from the Rowett Research Institute, had been independently researching the effects of GM potatoes on rats. What his studies found was that they had a detrimental effect on the immune system and the growth of the rats. However when the establishment found this out, this man was reduced from being a well-respected researcher to a mad cap scientist. Although it is agreed that genetically modifying grain to include beta-carotene (vitamin C) may aid hunger and poor eyesight problems in third world countries, there is a large-scale scandal going on among large biotech companies, who want to increase their already large profits. GM food production, gives larger firms a loop hole in which they are able to abuse the power of modifying these crops to their own specification. Recently, there have been reports that these companies have developed doomsday seeds, which they want to sell onto the world market particularly the struggling third world. These seeds have been genetically modified, so that once they have grown, the seeds they produce will genetically destroy themselves. These seeds may be an excellent money-spinner for the firms who sell them, but surely it is morally and ethically wrong to sell such seeds to poor and starving countries? The companies also have the added leverage over other seed producers because they are able to genetically modify their plants to grow faster and thus their seeds are cheaper than others. These people in the third world will eventually be forced into a downward spiral of having to buy new crops every year, because they are unable to afford the more expensive normal seeds. And what would happen if these genes happened to escape into the environment? GM genes may spread into wild populations with unpredictable and potentially harmful consequences; In this case, they may even cause crops to produce sterile seeds, which could have an adverse effect on the ecosystem. If we are to have confidence in GM foods, then larger businesses should be kept out of research. The way GM foods are being exploited by powerful corporations is a threat to democracy. These crops are unsustainable in light of longer-term plans and the great majority of the GM market is focussed more on profit rather than improving our diet. Insufficient testing has taken place to ensure their safety for public consumption. Research should be carried out independently, to assess whether such foods would be a benefit to our society and the effects it will have on the eco-system. Only then should they be allowed onto the market.

Development of Powers withing the British Constitution

Development of Powers withing the British Constitution â€Å"†¦the description of British government as an elective dictatorship is no longer appropriate.† (V. Bogdanor The New British Constitution (2009) Oxford, Hart). Discuss, considering in particular Bogdanor’s argument that the separation of powers has been strengthened within the British Constitution in recent years. Britain is described as not having a written constitution, instead it is simply: a set of inductive generalisations[1] which have resulted in Britain not having a formal separation of powers. Due to this lack of structure, the power within the constitution can become concentrated to a single group. Consequently an Act which would be held as undemocratic in places where there is a written constitution e.g. the United States, will not be in Britain. This essay aims to analyse the doctrine of the separation of powers, focusing on how the principle operates in the British Constitution where the separation between the branches of government is not strictly adhered to. It will examine how this entwining relationship has led to Britain living in an elective dictatorship opposed to the democracy it is advertised to be. Additionally, it will consider how the recent developments of the constitution, including the introduction of the Constitutional Reform Act 2005, has led to the separation of powers being strengthened therefore the democracy of Britain increasing. The separation of powers is one of these principles that is found, in one form or another, in most modern constitutions[2]. It is a feature predominantly in constitutions which operate a system of government that is based on the law. The importance of the doctrine is significant because it underpins the way the power is used within a state. Nowadays, it has been recognised as having a crucial role in the constitution; it remains important to distinguish the primary functions of law-making, law-executing and law-adjudicating. If these distinctions are abandoned, the concept of law itself can scarcely survive.[3] Poor division of power between the different organs would mean it is impossible to prevent abuse therefore a dictatorship could arise. The principle suggests that the correct way to separate the power is to divide it equally into three separate organs, each with independent roles from each other. If each of these branches perform a different function then the constitution will run efficiently. The branches today are known as; the legislative- who create law; the executive- responsible for the day to day running of the constitution; the judiciary- they apply the laws. This means if these divisions are adhered to then the constitution will successfully run as an organised democracy. The Greek Philosopher, Aristotle, was the first to classify the government as being split into three elements; The three are, first, the deliberative, which discusses everything of common importance; second the officials and third, the judicial element.[4] These distinctions are based purely on a political entity[5]whereas todays understanding of the principle focuses more on different branches of the government. Todays theory comes from the French Constitutional Theorist Montesquieu who popularised the doctrine in his book, the Spirit of the Law[6]. He breaks down the institutions as legislatures, executives and judges who exercise certain specific functions making laws, executing laws and adjudicating disputes about laws[7]. These branches can be translated to the British Constitution. The Legislative branch is made up of Parliament whose function is to pass legislation which regulates the citizens and to scrutinise the work of the executive in order to ensure that they are not abusing their powers. Britain has a bicameral legislative branch which means that it is composed of two chambers; the House of Lords and the House of Commons. The members of the House of Commons are elected by the British public and the party with the most seats form the government. This means that it is a fairly elected democracy. In Britain the role of the executive is to formulate and implement policies. It is led by the Prime Minister who is responsible for the overall conduct of the government and the ministers who are the head of each department. The role of the judiciary is to interpret the legislation and apply the law in accordance with how Parliament intended it when they created it. The judicial branch covers all judges however, it is those which sit in the higher courts who are most important to the operation of the British Constitution because they are in a position to challenge the government and ensure that it functions with the law. It has been argued that in Britain, the result of not having a codified constitution is that there is no consequences in place if one branch exceed the limit of power they have according to the separation of powers theory. The principle came under significant criticism around the 1980s. One of the main criticisms was by Brazier who stated that the arrangement of the British Constitution is: at best a weak separation of powers at worst a separation in name only[8]. Locke, an English Philosopher was concerned with the division of power and the consequence if the separation was not equal. Concentration of power can seriously affect the organisation and functioning of the constitution. He believes that: it may be too create a temptation to humane frailty apt to grasp for Power, for the same persons who have the power of making laws, to have also in their hands the power to execute them, whereby they may exempt themselves from obedience to the laws they make [9] This means if there is too much power concentrated to one person, or to one branch of the government, it would lead to the system as a whole being corrupt. It would provide people with the opportunity to use the system to their own advantage, essentially creating laws others do not agree with thus creating a dictatorship. The idea that too much power can result in one group using it to their advantage can be seen within the British Constitution, where there is many overlaps between the branches. This led to Lord Hailsham describing the structure of this constitution as an elective dictatorship[10] because although the government is elected by the public, they abuse the amount of power they have been given and use this to their own advantages- they act like dictators. In theory it appears that the roles of each branch are clearly distinguished however, this is not the case in practice. However, Montesquieu also recognises that the division of power between the organs of the state is not always amicable, there can be overlap between the branches and it still be a democracy. This idea there is overlap in the British Constitution can be supported by Parpsworth who claims: a separation of powers is not, and has never been a feature of the UK constitution. An examination of the three powers reveals that in practice they are often exercised by persons which exercise more than one such power.[11] This idea can be seen by the role of the Lord Chancellor who had a position within each of the three government branches. He had a legislative function of being the speaker of the House of Lords, an executive function of being a member of the cabinet and a judicial function as being the head of the judiciary. Being the head judge gave the Lord Chancellor the right to participate in judicial proceedings and to appoint judges. This shows that there is more than an overlap between the branches instead it shows that the same person clearly does exercise more than one power.[12] regardless of Montesquieu stating: all would be lost if the same man exercised these three powers[13]. Evidently this suggests that Britain is an elective dictatorship because there is no restriction on the amount of power that each branch can administrate within society, they can influence the functioning of the constitution without regard to the view of the public. The Lord Chancellor was in a strong position to abuse his powers; he could provide himself with more benefits or use the arrangement to influence the branches and allow one organ to dominate the whole constitution. Clearly, his position within all three arms of the government does not conserve the doctrine of the Separation of Powers. However, it could be argued that even though there is clear overlap between the roles, the question of abusing power was irrelevant as the Lord Chancellor optionally chose to remain impartial to each branch when undertaking the particular function it required; in recent years, the Lord Chancellor had rarely sat as a judge and never on matters affecting the government. This suggests that the British Constitution was never operating in a way which could be described as an elective dictatorship[14], instead it has always been an independent system[15]. However, there are exceptions to this; Lord Mackay, however, did sit in the leading case Pepper v Hart, [1993] AC 593, on which he offered a dissenting judgement[16] which shows that there are exceptions and the lines between the branches have been overstepped. Regardless of this only being an exception there was a clear overlap in the way the functions of the branches were being performed so the Labour Party, the current government at the time, introduced the Constitutional Reform Act 2005 which led to dramatic reforms, specifically regarding the position of the Lord Chancellor. His position at the head of the judiciary has now been replaced by Lord Chief Justice who is now in charge of the deployment of judges and allocation of work in Courts in England.[17] Additionally, his legislative function as the speaker of the House of Lords has been replaced by the Lord Speaker. This means that since the reform, his function is now purely in the executive branch of the government where he remains to be a member of the cabinet.[18] Evidently, the Constitutional Reform Act 2005 has strengthened the doctrine of the separation of powers in Britain as the overlaps between the arms have been reduced thus the power distribution has been equalised. However, not everybody agrees that the reforms towards the Lord Chancellor has increased the democracy in Britain. His role was described as a necessary evil vital to ensuring the smooth running of the separate estates. [19] This criticism suggests that the Labour Government removed the connection between the branches which may reduce the effectiveness of the organisation of each function. However, the reform was essential because if these distinctions are abandoned, the concept of law itself can scarcely survive.[20] Another problem with the separation of powers in the British Constitution is the overlap between the legislative and executive. Theoretically, the executive initiate the creation of new laws and it is for the legislatures to debate and pass the proposals once the content has been agreed upon. This means that the legislative is supposed to have control over the executive however, in practice it is clear that the Executive tends to dominate the legislature, because the party and electoral systems usually produce a strong majority government, what Lord Hailsham called an elective dictatorship[21]. This means that the executive is therefore present at the heart of Parliament.[22] Being at the centre of the government structure allows the executive to have strong persuasion over the legislatures, meaning they can get the result they wish without the House of Commons standing in their way. This supports Bagehots description of the British Constitution being; the close union, the nearly complete fusion of the legislative and executive powers[23] as it appears that they operate as one branch; the executive. This intertwining relationship can be seen as there is a strong convention that ministers are members of one or other House of Parliament[24] as well as the Prime Minister being a member too. As a result they will have strong influential powers over the decisions of both the executive and the legislative. This is because the ministers will be less likely to challenge the decisions of their party therefore their activities will not be questioned so they will be able to initiate any changes they wish. This means they are able to operate an elective dictatorship without checks to the amount of power they are using. However, it could be argued that the separation of powers still exists because there are procedures in place to ensure the doctrine remains a strength of the British Constitution. For example, there is a limit on the number of ministers who can be members of the House of Commons. This will ensure that the amount of influence they have is limited. Additionally, there is the opportunity for a backbench revolt. This is where a large number of MPs who are not ministers or in cabinet for the leader, vote against them to try prevent them from carrying out their propositions. One example is from 2001 where; more than 100 Labour backbenchers rebel over the attempted removal of two Labour MPs from the chairmanship of important parliamentary committees.[25] which led to the reinstatement of two Transport and Foreign Affairs Select Committees. This suggests that although the executive try and overstep their powers by going against the opinions of the public which could effectively mean Britain is a dictatorship, there are checks and processes in place for their decisions to be effectively challenged. Members of cabinet can, and have, also taken stands against their own parties. A recent example of this can be seen by Tony Blair who proceeded with the Iraq War despite the majority of his cabinet disagreeing with his actions and a further two resigning. This example shows that the government are not persuaded by the actions of their cabinet or backbench revolts. This shows the need for checks to prevent the abuse of power is essential. The legislature has the duty to ensure that the executive do not overstep this limit ensuring that control is maintained, reducing the chance of an elective dictatorship. These checks mean that Bogdanors suggestion that we are less of an elective dictatorship is correct; the rules ensure that nobody gains too much control. In conclusion, the doctrine of the separation of powers is a feature of the peculiarly British conception of the separation of powers that Parliament, the executive and the courts have their distinct and largely exclusive domain.[26] Before the Constitutional Reform Act 2005, the power was not constrained to the three separate organs. Instead the distinctions were not clear therefore the power was subject to being abused and concentrated to different branches. The reforms led to a redistribution of power in the British Constitution which has effectively led to a decrease of living in an elective dictatorship, just as Bogdanor suggests. Bibliography Allan, T. R. S.. First principles: the Rule of Law and Separation of Powers. Constitutional justice: a liberal theory of the rule of law. Oxford: Oxford University Press, 2003. 31-52. Barnett, Hilaire. Fundamental Constitutional Concepts; the separation of powers. Constitutional administrative law. 7th ed. London: Cavendish Pub., 2009. 71-91 Bates, Clifford The Fundamental Similarity between Montesquieu and Aristotle http://www.academia.edu/5192735/THE_FUNDAMENTAL_SIMILARITY_BETWEEN_MONTESQUIEU_AND_ARISTOTLE>. Blair Backbench reforms. BBC News. BBC, 26 Feb. 2003 http://news.bbc.co.uk/1/hi/uk/2802791.stm>. Bogdanor, Vernon. The new British Constitution. Oxford: Hart Pub., 2009. Bradley, Anthony, and Keith Ewing. The relationship between legislature, executive and judiciary. Constitutional and administrative law. 15 ed. Longman, 2010. 78-88 Brazier, Rodney. Constitutional reform: reshaping the British political system. 3rd ed. Oxford: Oxford University Press, 2008. Print. Constitutional Reform Act 2005. Constitutional Reform Act 2005 www.legislation.gov.uk/ukpga/2005/4/contents> Lord Hailsham Elective dictatorship. The Listener, 21 October 1976 Lord Phillips, Lord Chief Justice. Interview by Marcel Berlins. Personal interview 2007 Montesquieu, Charles de Secondat. The spirit of the laws. Cambridge: Cambridge University Press, 1989. Parpworth, Neil. Separation of Powers. Constitutional and administrative law. 7th ed. Oxford: Oxford University Press, 2012. 18-20 R Benwell and O Gay, The Separation of Powers www.parliament.uk/briefing-papers/sn06053.pdf‎> Watts, Duncan. Constitutions. Understanding US/UK government and politics a comparative guide. Manchester: Manchester University Press, 2003. 26-43. 1 [1] V Bogdanor,The New British Constitution(1st, Hart, 2009) 22 [2] A W Bradley and K D Ewing,Constitutional Administrative Law(15th, Pearson) 78 [3] T. R. S. Allan,Constitutional Justice: A Liberal Theory of the Rule of Law (Oxford, 2003) 31 [4] Aristotle Politics as citied in H Barnett, Constitutional Administrative Law(7th, Routledge, 2009) [5] Clifford Bates, The Fundamental Similarity Between Montesquieu and Aristotle (academia.edu 2005) http://www.academia.edu/5192735/THE_FUNDAMENTAL_SIMILARITY_BETWEEN_MONTESQUIEU_AND_ARISTOTLE> accessed 11th January 2014 [6] C Montesquieu ,The Spirit of the Laws (Cambridge Texts in the History of Political Thought)(1st, Cambridge University Press, Oxford 1989) [7] Clifford Bates, The Fundamental Similarity Between Montesquieu and Aristotle (academia.edu, 2005) http://www.academia.edu/5192735/THE_FUNDAMENTAL_SIMILARITY_BETWEEN_MONTESQUIEU_AND_ARISTOTLE> accessed 11/01/2014 [8]R Brazier,Constitutional Reform: Reshaping the British Political System(3rd, Oxford University Press, Oxford 2008) 108 [9]J Locke,Two Treatises of Government(ed. Laslett), chX11, para 143 as cited in A W Bradley and K D Ewing,Constitutional Administrative Law(15th, Pearson) 81 [10]Lord Hailsham, Elective dictatorship The Listener (21 October 1976) [11]N Parpworth,Constitutional and Administrative Law(7th, Oxford, 2012) 20 [12]N Parpworth,Constitutional and Administrative Law(7th, Oxford, 2012) 20 [13]C Montesquieu ,The Spirit of the Laws (Cambridge Texts in the History of Political Thought)(1st, Cambridge University Press, Oxford 1989) [14]Lord Hailsham, Elective dictatorship The Listener (21 October 1976) [15] The Lord Chief Justice 2007 Interview[2007] [16] V Bogdanor,The New British Constitution(1st, Hart, 2009) 66 [17]Lord Chief Justice (www.judiciary.gov.uk 2014) http://www.judiciary.gov.uk/about-the-judiciary/the-judiciary-in-detail/judicial+roles/judges/lord-chief-justice> accessed 11/01/2014 [18]Constitutional Reform Act 2005 (www.legislation.gov.uk 2005) http://www.legislation.gov.uk/ukpga/2005/4/contents> accessed 11/01/2014 [19]V Bogdanor,The New British Constitution(1st, Hart, 2009) 63 [20]Allan,Constitutional Justiceas cited in A W Bradley and K D Ewing,Constitutional Administrative Law(15th, Pearson) 88 [21] D Watts,Understanding US/UK Government and Politics: A Comparative Guide(Oxford 2003) 36 [22] R Benwell and O Gay, The Separation of Powers (www.parliament.uk 2013) accessed 11/01/2014 [23] Bagehot,The English Constitution 65as cited in A W Bradley and K D Ewing,Constitutional Administrative Law(15th, Pearson) 78 [24] A W Bradley and K D Ewing,Constitutional Administrative Law(15th, Pearson) 84 [25] Blairs backbench rebellions (www.news.bbc.co.uk 2003) http://news.bbc.co.uk/1/hi/uk/2802791.stm> accessed 11th January 2014 [26] R v Home Secretary[1995] 2 AC 513as cited in A W Bradley and K D Ewing,Constitutional Administrative Law(15th, Pearson) 78