rlistas wrote: > I pay here (Brazil) about 10U$ each. That's what I figured. I'd need 4 of them (two full bridges); this adds up :( > I need a 0 - 100 % duty cycle variation, and is very robust. That's what I also need. (Not so much 0%, but 100%.) So far I think that either a low-current auxiliary voltage that is high enough above my 8V-16V supply (plus a few zeners) or the HIP4081 should do that quite a bit cheaper. Thanks, Gerhard -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist