> I haven't followed much of this string, but I would
> think you could do something with a neon light bulb
> and a bit of wire as an antenna, if needed

That works as a tester for negative ion generators. The one I've
seen had two big pads, with a neon and a small cap across them.
One pad for your thumb and one pad to pick up ions. The neon
blinks when the cap has charged up to the striking voltage

-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist