Hi Brian, maybe they're assuming you have a DC reading ammeter? See Ya Nick Field > Original Poster: Brian H Le Page <b.h.le-page-at-surrey.ac.uk> > > During the last couple of days someone mentioned that an ammeter can be > connected to the high voltage output of a neon to measure current, but a > diode bridge must be connected across the meter. Could anyone explain this > please. > > Dr B > > > >