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The myth of triode NFB

207.180.182.58

It is a myth. Or, rather, an artifact of a model. Other models explain triode operation just as well, and more simply, without negative feedback.

I have participated in strenuous, protracted, agonizing debates on this subject and have looked at all the arguments very carefully before coming to this conclusion.

It is a frustrating argument to have because the idea of triode NFB is one of those seductively simple ideas that most people can understand easily, and which also happens to be wrong. Or, more precisely, given a broader, deeper understanding of the subject, the triode NFB proposition loses significance and takes its place among a number of other abstractions.

Saying triodes have inherent NFB is kind of like saying, "Information is carried over long distances by electronics flowing through wires." Everyone knows it's true, but the deeper you look, the more incorrect the statement turns out to be.

-Henry

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