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RE: "the question is incorrectly formulated"

The main reason pentode and beam tetrode amplifiers need considerable NFB is that the output impedance of a pentode/tetrode is extremely high and would give no damping to a speaker it is driving. A triode's output impedance is reasonably low so can provide damping by itself.
_

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  • RE: "the question is incorrectly formulated" - bwaslo 08:56:51 09/02/14 (0)
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