I use these all the time for linear supply filter caps. The nice thing is that you don't need the ceramic caps in parallel since the ESR is so good. They do work the best when the AC is rectified with ideal diodes though. I have tried the infinite capacitor as a DC blocking capacitor. Didn't work. I scratched my head till I did the math. Duh. - -Mark >>> Steve Hardy 11 October 1996 4:08 pm >>> This talk about zero ohm resistors reminds me of another favourite component: the infinite capacitor. It looks and acts remarkably similar to the zero ohm resistor. No matter how much charge you pump into it, it's terminal voltage is resolutely set at 0V. I've charged one at several amps for days on end - I still wonder how it manages to contain all those kilo-coulombs without exploding! Regards, SJH Canberra, Australia