[sdiy] Capacitor value checking

harry harrybissell at prodigy.net
Mon Sep 10 01:49:11 CEST 2001


If you have a sine wave generator... you could put a known value
capacitor in series with the unknown value... then use that as an
AC voltage divider.  When the caps are equal... there will be 1/2
the applied AC voltage across each cap.

This would get you within the right decade anyway... good for those
"is it a 22pF or a 220pF"?

H^) harry

John Lamb wrote:

> Is there some way to approximate the value of a cap using a scope?  I don't have a cap checker and
> cannot find one for cheap, and I need to sort these caps before my head blows up.  :/  Perhaps I could rig
> it to display the rise/fall time and read it from that?  Any help is appreciated
>
> Thanks in advance
> John Lamb




More information about the Synth-diy mailing list