Hi Carlos, On Wed, Sep 15, 2004 at 04:17:30PM -0400, Carlos A. Marcano V. wrote: > > >Yet another question - is it better to drive optoisolator with single > >pulse (say 10us) instead of holding it high until next zero-cross? > > It is better to use a 20Khz train of pulses. I don't have much experence with the type of circuit being discussed, but I'm wondering why a 20kHz pulse train is better. Just looking for an explaination... Thanks, Matthew. -- Drug prohibition laws help fund terrorism. _______________________________________________ http://www.piclist.com View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist