Rich Graziano wrote: > Isn't voltage a potential difference? Not sure. I thought that "voltage" comes from "volt", which is the unit of measurement for electric potential. A potential, just as well as its value, can be absolute or relative -- with absolute being nothing more than a special case of relative, with a special, universally defined but abstract, reference. So, given an absolute potential calculated in volt (say one volt), wouldn't you call that a "voltage"? Or is it possible that "one volt (absolute)" is /not/ a voltage? I think this distinction between potential and voltage doesn't make sense. But let's wait until Peter reads his digest :) Gerhard -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist