feedback

electronics

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Last updated

July 16, 2026

Quick Summary

Feedback, in electronics, is the process where a portion of the output signal of a system is returned to the input to modify and improve subsequent output. This concept is crucial in various electronic circuits, such as amplifiers, to stabilize performance or achieve specific functions.12

There are two main types of feedback:
* Negative feedback: This type tends to dampen a process by applying the output in opposition to the initial conditions. While it can reduce the overall gain of a circuit, it effectively corrects distortions in the signal.32
* Positive feedback: This type magnifies a process or increases its output.4

Feedback controls are fundamental components in automated systems, consisting of an input, the process being controlled, an output, sensing elements, and a controller. These systems use feedback to compare the measured output with the desired input and make adjustments to minimize any difference.5

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electronics
Coupling amplifiers
Judicious use of feedback from later parts of a circuit to earlier ones can be utilized to stabilize such circuits or to perform various other useful functions (see below Oscillation). In negative feedback, the feedback signal is of a sense opposite to the signal present at the point…
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Judicious use of feedback from later parts of a circuit to earlier ones can be utilized to stabilize such circuits or to perform various other useful functions (see below Oscillation). In negative feedback, the feedback signal is of a sense opposite to the signal present at the point…
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psychedelic rock
…states through the use of feedback, electronics, and intense volume.
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…states through the use of feedback, electronics, and intense volume.
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Pete Townshend
The Who
…to intentionally use guitar amplifier feedback in his music. Though his technique was rudimentary in comparison to the feedback-laden styles of guitarists such as Jimi Hendrix, Townshend’s squealing feedback opened new doors for its use in rock. Performative aspects of Townshend’s music also drew attention. When he accidentally smashed his…
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…to intentionally use guitar amplifier feedback in his music. Though his technique was rudimentary in comparison to the feedback-laden styles of guitarists such as Jimi Hendrix, Townshend’s squealing feedback opened new doors for its use in rock. Performative aspects of Townshend’s music also drew attention. When he accidentally smashed his…
Read More