michael brown said: > One question: Is it feasable to build an SMPS that will accept an input > voltage ranging from 9 to >50V yet still provide regulated 5V output? Yes. You might even be able to do it for a dollar (or two) : http://www.romanblack.com/smps.htm Cheers, Bob -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu