At 05:20 PM 11/10/2003 -0600, llile@SALTONUSA.COM wrote: >An even cruder, but handy approximation is 1000 uF per amp of power supply >current. I have watched this work wonders in marginal power supplies. I learned that lesson the hard way, in high school. There is such a thing as too much filter cap! 100,000uF sounds nice, till you watch the current through the diodes during the teeny-tiny conduction angle skyrocket! Now, they do power factor correction in SMPS inputs, that make them conduct over most of the cycle. A diode, replaced by a bunch of parts. :) -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.