Compensating multi-stage feedback (was: RE: all tranny vca+ )

[tom at synth-diy.you-bastards.com]

=?iso-8859-1?Q?Ren=E9?= Schmitz <uzs159 at uni-bonn.de> writes:

> The FET circuits we've seen lately were mostly not feedback (at least not
> over several stages), but still have very small THD. Devices with a squar=
> e
> law characteristic (triodes, FETs) allow it to cancel most of the even
> order harmonics by symmetrical or push pull arrangements.

A symmetric/push-pull circuit will not generate even harmonics
regardless of the transfer functions of the devices, as long as they
match.

Tom.