AW: AW: Lin/exp control

[Joachim Verghese]

> Aren't there self heating effects involved as well ? (With rather high
> currents)

Possibly, yes. Haven't taken those issues into account yet.
 
> Your circuit should get rid of the beta problems with a FET instead of
> a transistor, but the vibrato circuit probably wouldn't be that easy 
> anymore.

Good idea. Perhaps our old friend the 4007 would be worth
experimenting with.

-joachim