> Series resistance would server you better for ESD protection. Are you sure? That does not seem logical to me. > Is it possible to put the PCB into an enclosure? not practical. Adds siggnificantly to the cost, and too many connectors that would need to be accessible. Wouter van Ooijen -- ------------------------------------------- Van Ooijen Technische Informatica: www.voti.nl consultancy, development, PICmicro products docent Hogeschool van Utrecht: www.voti.nl/hvu -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist