This is a term I've seen when reading about impedance matching circuits, but thus far I haven't found an explanation of it's meaning. It has to do with the impedance of the circuit, and it's always of the form x+jy or x-jy. Like 20+j10 or 20-j10. Is it reference to a complex number? Any help is greatly appreciated. -- Paul Anderson VE3HOP wackyvorlon@gmail.com http://www.oldschoolhacker.com "May the electromotive force be with you." -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist