1995 | OriginalPaper | Chapter
Properties of Feedback Circuits
Authors : Rudy G. H. Eschauzier, Johan H. Huijsing
Published in: Frequency Compensation Techniques for Low-Power Operational Amplifiers
Publisher: Springer US
Included in: Professional Book Archive
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The essence of feedback is to redirect part of the output signal back to the input. There the returned signal is compared to the incoming signal. Any inconsistency between the desired and the actual output value produces ar error signal. The nature of the feedback loop helps reducing the error to minimum. In this way, the loop accurately controls the output to produce an —amplified or otherwise processed— replica of the input signal.