Charles Craft said: > I've come across this on a couple of boards today. > > When are caps labelled as BC1, BC2, ... instead of C1, C2, ..... ???? "Before Capacitors" - they must be very old! :-) Actually, they are probably bipolar electrolytics. Cheers, Bob -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.