Dave Dilatush wrote: > Replacing the 4K7 with a 2K2 speeds up the P-channel devices' > turn off, reducing the problem somewhat. To eliminate it > altogether I think you need to drive the P-channel devices with > something that will turn them off quickly-- maybe a complementary > PNP/NPN follower or something like that. And, you should always have some dead time between turning one off and the other on. This is one of the things the new "motor control" PWM units do for you. Otherwise, you have to do it in software. ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.com -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist