[sdiy] very simple VCA circuit

[lanterma at ece.gatech.edu]

On Jan 27, 2011, at 2:50 AM, David G. Dixon wrote:

> 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.
> 
> I've tried simulating some JFET circuits from the web on Multisim, but have
> had no luck.  Any link to a schematic for a tried and tested circuit would
> be most appreciated, preferably one you've tried yourself.

The Music Easel timbre circuit has a JFET VCA at the front.

- Aaron