Propeller Head Plaza: I still think so... by Charles Hansen Technical and scientific discussion of amps, cables and other topics.

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Posted by Charles Hansen (M ) on June 26, 2003 at 17:12:27

In Reply to: Re: Don't think so posted by mfc on June 25, 2003 at 21:26:27:

Again, I don't want this to devolve into a discussion about semantics (which it may already have done).

My point is that Norman Crowhurst described how a circuit with 3rd harmonic distortion (for example) would generate 9th harmonic distortion when feedback is applied. That is because there is now 3rd harmonic distortion on the 3rd harmonic from the first time the signal went through the circuit.

But this does not happen with a follower. So in my book (and to my ears), there is a clear fundamental difference between the "feedback" in a follower and the feedback in a normal feedback loop. Which is why I think it is better to refer to what happens in a follower (or unbypassed emitter/source/cathode resistor) as "degeneration" rather than "feedback".

Best regards,
Charles Hansen

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