repl pots with vc

[Edu Silva]

De: Paul Perry <pfperry at melbpc.org.au>

 
> At 10:06 AM 8/02/99 +0100, Martin Czech  wrote:
> 
> >Any comments ?
> >
> yes, switched resistor, using a pulse width modulation technique.
> If the freq is high enough, you could isolate the chopping frequency 
> with LC filters. Anyone tried? (you see this in some guitar fx 
> phasers, where you want to have 6 or more variable resistors track)
> 
> paul perry melbourne australia

Years ago, I saw an Elektor phaser that used PWM technique to do the
modulation. I tried PWM in my first synth project, but couldn't get rid of
the annoying switching noise.

Edu

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