On Sun, 22 Jun 2003, Gaston Gagnon wrote:
> Tim,
> Did my suggestion made it to the list or was it discarded for a lack of
> good sense ?
> Gaston
>
It did make it, but only after I sent my last email :(  Time to change
ISPs I think...

I'll paste in your email here:
> I have not tried this but what about feeding your signal on one input of
> a comparator while the other input is connected to the pwm output trough
> a low pass filter?
> The comparator output is then used to make the pwm follow your analog
> signal.
> Could the time constant of the filter be made small enough ?
> Gaston

Hmm, I don't quite understand what you mean here.. I *think* you mean to
watch the comparator 'match' flag, then read what the PWM pin was doing at
the that instance? If so, isn't the PWM output a square wave, so my analog
input will only match if it hits vss or vdd? Or is that what the low pass
filter fixes?

Cheers,

Tim

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