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negative feedback


from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Feedback that reduces the output of a system, such as the action of heat on a thermostat to limit the output of a furnace or the accumulation of toxic waste products by a growing population of bacteria.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. a feedback loop in which the output signal of a system is amplified with a net negative gain and added to the input signal, before the main amplifier

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. feedback in opposite phase with (decreasing) the input


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  • 12.136 What is a negative-feedback or degenerative amplifier?—An amplifier in which a portion of the output signal voltage is fed back 180 degrees out of phase to the input.”
    Audio Cyclopedia by Howard M. Tremaine, Howard W. Sams & Co., 1969, pg. 573

    February 4, 2010