Electronic amplifier - Electronic amplifier An electronic amplifier is a device for increasing the power of a signal. It does this by taking power from a power supply and shaping the output to match the input signal. This process invariably introduces some noise and distortion into the signal, and the process cannot be 100% efficient - amplifiers will always produce some waste heat. An idealised amplifer can be said to be "a piece of wire with gain", the output is an exact replica of the input, only larger. Different designs of amplifier are used for different types of applications and signals. We can broadly divide amplifiers into three categories - small signal amplifiers, low frequency power amplifiers and RF power amplifiers. Each of these calls for a slightly different.
Instrument amplifier - Instrument amplifier This page is about amplifiers for musical instruments. See also instrumentation amplifier, a type of operational amplifier. An instrument amplifier is an electronic amplifier designed for use with an electric or electronic musical instrument, such as an electric guitar. an amplifier head Table of contents showTocToggle("show","hide") 1 Most common forms 2 History 3 Present day 4 Less common forms 5 Some major instrument amplifier manufacturers (alphabetical) 6.
Instrumentation amplifier - Instrumentation amplifier You may be looking for instrument amplifier, as used for amplifying musical instruments. This page is about the electronic device. An instrumentation amplifier is a type of operational amplifier that has been specifically designed to have characteristics suitable for use in measurement and test equipment. These characteristics include very low d.c offset, low drift, low noise, very high open loop gain and very high input impedances. They are used where great accuracy and stability of a circuit both short and long term are required..
Electronic oscillator - Electronic oscillator An electronic oscillator is an electronic circuit that produces a repetitive electronic signal, often a sine wave or a square wave. Table of contents showTocToggle("show","hide") 1 Types of Electronic Oscillator 1.1 Harmonic Oscillator 1.2 Relaxation Oscillator 2 See also Types of Electronic Oscillator There are two main types of electronic oscillator: the harmonic oscillator and the relaxation oscillator. Harmonic Oscillator The harmonic oscillator produces a sinusoidal output. The basic form of an harmonic oscillator is an electronic amplifier with the output attached to an electronic filter, and the output of the filter attached to the input of the amplifier. When the power supply to the amplifier is first switched on, the amplifier's output consists only of noise. The noise travels around the loop, being.
Differential amplifier - Differential amplifier A differential amplifier is a type of electronic amplifier that multiplies the difference between two inputs by some constant factor (the gain). A common form of differential amplifier is the operational amplifier, or op-amp. Given two inputs A and B, a perfect differential amplifier gives an output O: where K is the gain. Note that a differential amplifier is a more general form of amplifier than one with a single input - by grounding one input of a differential amplifier, a single-ended amplifier results. Differential amplifiers are found in any system that utilises negative feedback, where one input is used for the input signal, the other for the feedback signal. A common application is for the control of motors or servos, as well as for.
Amplifier - Amplifier An amplifier is a device which changes a small movement into a larger movement. However, in general the most common and useful amplifiers actually use a small amount of energy to control a larger amount of energy. Furthermore it is of significant advantage if the amplified output is in a linear relationship with that of the input. This relationship is known as the gain of the amplifier. The most common type of amplifier is the electronic amplifier, commonly used in radio and television transmitters and receivers, hi-fi units, microcomputers and other electronic digital equipment, and guitar and other instrument amplifiers. Another type of amplifier is the fluidic amplifier, based on the fluidic triode.\n.
Audio amplifier - Audio amplifier An audio amplifier is an electronic amplifier that works with audio frequencies. Applications are in instrument amplifiers, and in sound systems for home, automotive and public use. The sound card in a personal computer contains several audio amplifiers, as does every stereo sound system..
Preamplifier - Preamplifier A preamplifier is an electronic amplifier designed to prepare an electrical signal for further amplification. Preamplifiers may be: in a separate housing. incorporated into the housing or chasis of the amplifier they feed. mounted in other items of equipment, such as microphones and electric guitars. Examples are: the integrated preamplifier in a foil electret microphone. the first stages of an instrument amplifier. an audio mixing desk. a masthead amplifier used with television receiver antenna or a satellite receiver dish. This is a stub. You can help Wikipedia by fixing it..
Operational amplifier - Operational amplifier An operational amplifier or op-amp is an electronic circuit module (normally built as an integrated circuit) which has a non-inverting input (+), an inverting input (-) and one output. The output voltage is the difference between the + and - inputs multiplied by the open-loop gain: vo = (vp - vn) * Gopenloop. Since op-amps have uniform parameters and often standardized packaging as well as standard power supply needs, they help in designing an application fast. A typical circuit symbol for an op-amp looks like this: Its terminals are: vn: inverting input vp: non-inverting input vo: output Vdd: positive supply Vss: negative supply Table of contents showTocToggle("show","hide") 1 DC Behaviour 2 AC Behaviour 3 Applications 4 See also DC Behaviour Open-loop gain is defined as.
List of electronics topics - of electronics topics This is a list of communications, computers, electronic circuits, fiberoptics, microelectronics, medical electronics, reliablity, and semiconductors. Please remove any redirects (and do not add any redirects). A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # 16VSB 2VSB 32VSB 4000 series 4VSB 555 741 7400 series 8VSB A Absolute gain Access control Acceptance pattern Access time Acoustic coupler Acquisition ADSL Adaptive communications Adder Adjacent-channel interference Alarm sensor Aliasing Alternate party Alternating current AM radio Amateur radio Ambient noise level American Radio Relay League (ARRL) AMI Ammeter Ampere Amplitude distortion Amplitude modulation Amplifier Analog Analog computer Analog decoding Analogue switch Analog to digital converter Angular misalignment loss Antenna Antenna blind cone Antenna.
Low noise amplifier - Low noise amplifier The low noise amplifier (LNA) is a special type of electronic amplifier used in communication systems to amplify very weak signals captured by an antenna. It is usually located at the antenna. See also: LNB.
Valve amplifier - Valve amplifier A Valve amplifier (British English), also known as a tube amplifier or vacuum-tube amplifier (in American English), is a device for increasing electrically increasing the amplidude of an electrical signal, typically sound. Today most sound systems use transistor amplifiers for economic reasons, but Valve amplifiers remain popular for guitar amplification and for "high end" hi-fi systems. Valve amplifiers are widely, but not always correctly, associated with the valve sound. In fact this sound has more to do with the circuit topology and circuit design of the amplifier, than to the use of valves rather than transistors as the active gain devices. Fundamentally, valve amplifiers are amplifier built using valves as the main active components. However, today, valve amplifiers (at least for Hifi applications) are mostly.
Jack plug - with sufficiently small bodies. These connectors were commonly used on early stereo tape recorders. A short-barrelled version, once used on high-impedance mono headphones, and in particular those used in World War Two aircraft. It is physically possible to use a normal plug in a short socket, but a short plug will neither lock into a normal socket nor complete the tip circuit. These are still manufactured but are now regarded as a non-standard size. Table of contents showTocToggle("show","hide") 1 Mono and stereo compatibility 2 Uses 3 Switch contacts Mono and stereo compatibility In the original application in manual telephone exchanges, many different configurations of 1/4" jack plug were used, some accommodating five or more conductors, with several tip profiles. Of these many varieties, only the two-conductor version with a rounded tip.
Integrated circuit - final step in the development process, starting in the 1980s and continuing on, was "Very Large-Scale Integration" (VLSI), with hundreds of thousands of transistors, and beyond (well past several million in the latest stages). The largest chips are sometimes called "Ultra Large-Scale Integration" (ULSI). For the first time it became possible to fabricate a CPU or even an entire microprocessor on a single integrated circuit. In 1986 the first one megabyte RAM was introduced, which contained more than one million transistors. Microprocessor chips produced in 1994 contained more than three million transistors. This step was largely made possible by the codification ( see: Carver Mead and Lynn Conway) of "design rules" for the CMOS technology used in VLSI chips, which made production of working devices much more of a systematic endeavour..
Harold Stephen Black - Stephen Black Harold Stephen Black is an electronic engineer who revolutionized the field of applied electronics by inventing the feedback amplifier in 1927. External Links HS Black This article is a stub. You can help Wikipedia by fixing it..
Vox (musical equipment) - in Britain, which is most famous for making the AC30 guitar amplifier. The Jennings Organ Company was founded by Tom Jennings after World War II and made the Univox, an electronic organ. In 1956 Jennings was shown a prototype guitar amplifier made by Dick Denney, an old workmate from a wartime munitions factory. The company was renamed Jennings Musical Instruments, and in 1958 the 15-watt Vox AC15 was launched. It was taken up by the Shadows and other British rock 'n' roll musicians. In 1959, with sales under pressure from the more powerful Fender Twin, Vox produced the 30-watt AC30. The AC30, fitted with Celestion "blue" loudspeakers and Vox's special "Top Boost" circuitry helped to produce the distinctive sound of the British Invasion, being used by The Beatles, The Who and.
Glossary of medical terms related to communications disorders - the inner ear that contains the organ of hearing. Cochlear implant - medical device that bypasses damaged structures in the inner ear and directly stimulates the auditory nerve, allowing some deaf individuals to learn to hear and interpret sounds and speech. Cognition - thinking skills that include perception, memory, awareness, reasoning, judgment, intellect, and imagination. Conductive hearing impairment - hearing loss caused by dysfunction of the outer or middle ear. Cued speech - method of communication that combines speech reading with a system of handshapes placed near the mouth to help deaf or hard-of-hearing individuals differentiate words that look similar on the lips (e.g., bunch vs. punch) or are hidden (e.g., gag). Cytomegalovirus (Congenital) - one group of herpes viruses that infects humans and can cause a variety of clinical symptoms,.
Guitar - superseded by electrical amplification, but the resonator is still played by those desiring its distinctive sound. This type of guitar is more commonly played face up, on the lap of the seated player, and often with a metal or glass slide. 12 string guitars usually have steel strings and are widely used in folk music and rock and roll. Rather than having only six strings, the 12-string guitar has pairs, like a mandolin. Each pair of strings is tuned either in unison (the two highest) or an octave apart (the others). They are made both in acoustic and electric forms. Archtop guitars are steel string, acoustic instruments which feature a violin-inspired design in which the top and back of the instrument are carved in a curved rather than a flat shape..
Feedback - Systems which include feedback are prone to hunting, which is oscillation of output resulting from improperly tuned inputs of first positive then negative feedback. Table of contents showTocToggle("show","hide") 1 Feedback in electronic engineering 2 Feedback in economics 3 Feedback in nature 4 Feedback in organizations 5 See also Feedback in electronic engineering Feedback is designed into many electronic and other technical devices. In engineering control theory, feedback is a process in which a signal generated from the output of a system is applied as an input to the same system. The most common general-purpose controller is a proportional-integral-derivative controller. Each term of the PID controller copes with time. The proportional term handles the present state of the system, the integral term handles its past, and the derivative or slope term tries.
Frequency synthesiser - Frequency synthesiser A frequency synthesiser is an electronic system for generating any of a range of frequencies from a single fixed timebase or oscillator. They are found in many modern devices, including radio receivers, mobile telephones, radiotelephones, walkie-talkies, CB radios, Satellite receivers, GPS systems, etc. Before the invention of the frequency synthesiser, radio transmitters and receivers had to employ a separate crystal for each channel that the device could operate on. When the user changed channel, a new crystal was switched into the circuit. Since quartz crystals are highly precise they are therefore expensive to make, and in addition take up quite a large amount of space. Frequency synthesisers generate multiple channels from a single master crystal oscillator, and can generate hundreds of frequencies. This yields a huge cost and.
