OK, Fine; measuring is one thing, but what about circuit protection? If there are spikes and surges present, how would you go about protecting the circuit? Mark Skeels Engineer Competition Electronics, Inc. TEL: 815-874-8001 FAX: 815-874-8181 www.competitionelectronics.com -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist