[sdiy] fanning grounds vs. dirty/clean ground

[media.nai at rcn.com]

>You have a series resistor between the opamp output and your (capacitive)
>load, and one feedback (resistor) goes from _after_the series resistor
>to the negative opamp input, and a second feedback (capacitor) goes from
>_before_ the series resitor to the negative opamp input. I have never
>*calculated* these values - I just optimize them in PSpice for a specific
>application.

So what is that supposed to do again??