[sdiy] How to make a continuously variable wave LFO or VCO

[Paul Schreiber]

>
>  Does anyone know how to construct a VCO or LFO with continuously 
> variable/selectable waveforms like what is done on the MicroMoog ?

I do (raises hand in back of class).


OK, you use a center-tapped pot 50K or 100K linear. You put waveform A into 1 
leg, waveform B into the center-tap, and waveform C on the other leg (all driven 
with *low impedances*. The wiper is the output, a 1M to ground on it.

Paul S.