On Wed, 15 Feb 2006, David VanHorn wrote: >> >> So will that repetively stress the diodes at each 60hz cycle? So at each >> "charge" they get a fast burst of current through them? > > > YES. > > >> I don't think that's the problem. The diodes are rated, individually, >> for 2x more current than is the steady state. > > > Only 2x eh.. So if the conduction angle is less than 90 degrees, you're > there. > I bet if you take that cap way down, and accept some ripple, you'll have > your diodes living. Or put a 40A choke after the bridge and some recovery diodes. Peter -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist