Negative feedback | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-03-26

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Negative_feedback


00:01:03 1 Examples
00:03:21 2 History
00:07:25 3 Overview
00:10:06 4 Some specific implementations
00:10:24 4.1 Error-controlled regulation
00:13:40 4.2 Negative feedback amplifier
00:17:17 4.3 Operational amplifier circuits
00:20:00 4.4 Mechanical engineering
00:20:34 4.5 Biology and chemistry
00:22:23 4.6 Self-organization
00:22:54 4.7 Economics



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SUMMARY
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Negative feedback (or balancing feedback) occurs when some function of the output of a system, process, or mechanism is fed back in a manner that tends to reduce the fluctuations in the output, whether caused by changes in the input or by other disturbances.
Whereas positive feedback tends to lead to instability via exponential growth, oscillation or chaotic behavior, negative feedback generally promotes stability. Negative feedback tends to promote a settling to equilibrium, and reduces the effects of perturbations. Negative feedback loops in which just the right amount of correction is applied with optimum timing can be very stable, accurate, and responsive.
Negative feedback is widely used in mechanical and electronic engineering, and also within living organisms, and can be seen in many other fields from chemistry and economics to physical systems such as the climate. General negative feedback systems are studied in control systems engineering.