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Novel Feedback Topology Obviates the Need for High Loop Gain

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A novel feedback topology is presented, differing from 'classical' feedback by an additional feedback term, inversely proportioned to open-loop transfer function. The result is the elimination of the open-loop transfer function from the closed-loop equation, without requiring high loop gain. An example circuit, implemented with simple means, is discussed, showing a distortion reduction of several orders of magnitude.

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Permalink: http://www.aes.org/e-lib/browse.cfm?elib=7182

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