Hi all, I'm designing an H-Bridge to drive a 12V motor from a PIC, and I=20 understand most of the basics and math, but not clear on when to use=20 P-channel and N-channel FETs vs all 4 N-ch FETS. I expected I'd use=20 PFETs & NFETs, with smaller transistors on the gates of the P-FETs to=20 get the gate up to 12V to switch off properly, but I've see examples to=20 the contrary (using all N-FETs). Is there a specific reason? A pointer to a good H-bridge tutorial would be great. Thanks. --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .