On Apr 11, 2011, at 9:55 AM, John Doty wrote: > > On Apr 11, 2011, at 9:19 AM, Kovacs Levente wrote: > >> On Mon, 11 Apr 2011 16:58:37 +0200 >> Uwe Bonnes >> <b...@elektron.ikp.physik.tu-darmstadt.de> >> wrote: >> >>> What value do you need? Try NP0/COG type, even if substantial more >> >> 120pf ... 1.5nF > > Another possibility in that range is plastic "film" dielectrics rather than > ceramic.
Oh, and one more issue. AC is much more stressful on a capacitor than DC. It's best to choose a capacitor with an AC voltage rating. If you can't, a common rule of thumb is to choose one with a DC voltage rating 3 times the AC RMS. Classically, this has been an application for mica capacitors, but they're relatively rare these days. John Doty Noqsi Aerospace, Ltd. http://www.noqsi.com/ j...@noqsi.com _______________________________________________ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
