automatic gain control (input)

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• Automatic gain control — (AGC) is an adaptive system found in many electronic devices. The average output signal level is fed back to adjust the gain to an appropriate level for a range of input signal levels. For example, without AGC the sound emitted from an AM radio… …   Wikipedia

• automatic gain control — noun A system in amplifiers that compensates for a wide range of input signals to give a more uniform level of output • • • Main Entry: ↑automatic …   Useful english dictionary

• 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

• Control system — For other uses, see Control system (disambiguation). A control system is a device, or set of devices to manage, command, direct or regulate the behavior of other devices or system. There are two common classes of control systems, with many… …   Wikipedia

• control — 1. (v.) To regulate, restrain, correct, restore to normal. 2. (n.) Ongoing operations or programs aimed at reducing a disease. 3. (n.) Members of a comparison group who differ in disease experience or allocation to a regimen from the subjects of… …   Medical dictionary

• Control reconfiguration — is an active approach in control theory to achieve fault tolerant control for dynamic systems [1]. It is used when severe faults, such as actuator or sensor outages, cause a break up of the control loop, which must be restructured to prevent… …   Wikipedia

• control system — Means by which a set of variable quantities is held constant or caused to vary in a prescribed way. Control systems are intimately related to the concept of automation but have an ancient history. Roman engineers maintained water levels in… …   Universalium

• Control (management) — Controlling is one of the managerial functions like planning, organizing, staffing and directing. It is an important function because it helps to check the errors and to take the corrective action so that deviation from standards are minimized… …   Wikipedia