> What size light bulb and diode did you use? I have a couple of > batteries that might work on. The diode was a 1N4007, rated 1 amp, 1000 volts. Probably overkill, just what I had handy. The bulb is a 40 watt (110 volt), again just what I happened to have handy. I think the original article called for a 100 watt bulb. Randall