[sdiy] very simple VCA circuit

[Justin Owen]

-----Original Message-----
From: David G. Dixon [dixon at interchange.ubc.ca]

> I'm looking for a very simple voltage-controlled gain circuit that I can
build with, say, one BJT or JFET.  It only has to handle positive voltages,
and the gain range will be confined to 0 to 2.

What about the single transistor VCA from the MS20 or Ray Wilson's WP20?

I've used it plenty of times - 1 x 2N3904 and a few resistors. I've got a schematic round somewhere if you can't find one  and I'd be curious to see what your simulations had to say about it.

Justin