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OTL, Output Transformerless Amplifier User Group.

RE: Feedback, no feedback and selective feedback

Luca, Can you tell us more? For example, exactly where do you put the feedback loop in one of your circlotron designs? Are there decent equations for calculating the values of R and C, such that a non-EE could do it? What output impedance do you shoot for and how do you shoot for it (vs some other lower or higher value)? I am receptive to trying a touch of NFB to bring the output Z down into the range of 1 ohm or below, and I have no problem about your idea of making it frequency-dependent. Thanks.


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