[sdiy] PWM Outputs

[Dave Manley]

On 11/7/2010 8:21 AM, Tim Ressel wrote:
> Hi everyone,
>
> A technical question: if you have a PWM, say 0-5 volts from ttl or cmos, is it
> better to cap-couple it to the output jack, or not? My concern is the average DC
> level of PWMs varies over a wide range. This would cause a thump if cap-coupled,
> yes?

For the sake of argument consider you buffered the output of the PWM with an
opamp.  Now it's just an opamp output like any other.  Does the nature of the
signal require capacitive coupling?

-Dave