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automatic gain control amplifier

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  • automatic gain control — TV (AGC) Circuitry found on most camcorders that adjusts incoming audio levelsautomatically to match environmental sound levels. WikiV A circuit for automatically controlling amplifier gain in order to maintain a constant output voltage with a… …   Audio and video glossary

  • automatic gain control — noun that part of an amplifier which varies the gain inversely with the strength of the input signal, thus maintaining an approximately constant output. Also, AGC …  

  • Gain compression — in an electronic amplifier circuit is a reduction in differential or slope gain caused by nonlinearity of the transfer function of the amplifying device. This nonlinearity may be caused by heat due to power dissipation, or by overdriving the… …   Wikipedia

  • Gain — For other uses, see Gain (disambiguation). In electronics, gain is a measure of the ability of a circuit (often an amplifier) to increase the power or amplitude of a signal from the input to the output. It is usually defined as the mean ratio of… …   Wikipedia

  • Differential amplifier — symbol The inverting and non inverting inputs are distinguished by − and + symbols (respectively) placed in the amplifier triangle. Vs+ and Vs− are the power supply voltages; they are often omitted from the diagram for simplicity, but of course… …   Wikipedia

  • Negative feedback amplifier — Figure 1: Ideal negative feedback model A negative feedback amplifier (or more commonly simply a feedback amplifier) is an amplifier which combines a fraction of the output with the input so that a negative feedback opposes the original signal.… …   Wikipedia

  • Michael Francis Tompsett — is a British born physicist and former researcher at English Electric Valve Company, [1] who later moved to Bell Labs in America. He is best known as the inventor of Charge Coupled Device (CCD) Imagers used for imaging in devices such as digital… …   Wikipedia

  • Dynamic range compression — This article is about a process that intentionally reduces the dynamic range of audio signals. For similar reductions caused by circuit imperfections, see Gain compression. For processes that reduce the size of digital audio files, see Audio… …   Wikipedia

  • List of electronics topics — Alphabetization has been neglected in some parts of this article (the b section in particular). You can help by editing it. This is a list of communications, computers, electronic circuits, fiberoptics, microelectronics, medical electronics,… …   Wikipedia

  • Automixer — In professional audio, an automixer is a hardware or software device that balances multiple sound sources, usually microphones, based on each source s level, quickly and dramatically [ [http://www.rane.com/par a.html Rane Pro Audio Reference. A:… …   Wikipedia

  • Vacuum tube — This article is about the electronic device. For experiments in an evacuated pipe, see free fall. For the transport system, see pneumatic tube. Modern vacuum tubes, mostly miniature style In electronics, a vacuum tube, electron tube (in North… …   Wikipedia

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