Coilers, Here's a site which contains some informatio regarding various techniques on producing UV light (possibly for a triggered gap): http://www.people.virginia.edu/~roa2s/IR_Sources.html Strangely enough it doesn't list the mercury vapor bulbs like the ones found in tanning/EPROM erasers... -Bill ______________________________________________________ Get Your Private, Free Email at http://www.hotmail-dot-com