SV: Re: [sdiy] Wanred (dead or alive) : Pot

[john mahoney]

> karl dalen wrote:
> > 4066, 4053,4051, PWM and dead band comparators to set
> > OFF position! PWM at 100Khz. Gives mix and switch
> > in many possible ways! Ugh!

Roy J. Tellason wrote:
> I was wondering a while back whether something of this sort would be
> workable...
>
> Does anybody have any actual circuits that work along these lines?

I've read that the switching frequency must be "much" higher than the
maximum signal frequency. But, how much is much?

Blacet makes a switched capacitor filter. What's the frequency, John? (Or is
it proprietary?)
--
john <--(highly proprietary)