At 07:34 AM 8/13/2009, Roger Weichert wrote: >And also the supply. From the data sheets I see that 5.6 volts is too high. The high supply voltage is usually pretty easy to fix. Just change out the 5v6 zener for a 5v1 version. You will have to make sure that everything else on the board is happy with 5v1 supply, though. In particular, make sure the MOSFETs are happy with that level of gate drive (unless there is a gate-driver circuit in there that supplies higher than 5V to the gates). dwayne -- Dwayne Reid Trinity Electronics Systems Ltd Edmonton, AB, CANADA (780) 489-3199 voice (780) 487-6397 fax www.trinity-electronics.com Custom Electronics Design and Manufacturing -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist