Well, try an ACS parallel to the shunt? That way, if your environment does tear off the PCB traces, at least the shunt will survive. ;-) --=20 James Cameron http://quozl.linux.org.au/ --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .