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Registered Member #1034
Joined: Sat Sept 29 2007, 12:50PM
Location: Chillicothe, Ohio
Posts: 154
Thanks for all the replies on possible failure modes. It has been an interesting and thought provoking discussion. I'm happy with how this thing has turned out but as is often the case with these things I have a craving for more power. Most people that build these use things like flyback transformers that run on higher frequencies and I was wondering if there would be any chance that the newer inverter type neon sign transformers would work for this. Probably not I guess since it may be more like a florescent light ballast that puts out a high voltage pulse to start the tube and then runs at a much lower voltage. I have never heard of anyone doing anything useful with one of these.
Registered Member #1225
Joined: Sat Jan 12 2008, 01:24AM
Location: Beaumont, Texas, USA
Posts: 2253
Yes, inverter NST's will work fine. As far as i know they are rated for a constant output. I had a small one, 12v powered, and it was a constant output, no resonant capacitor to give a high starting voltage/ballast it. Most CFL supplies seem to use a current fed royer, and a resonant capacitor which gives the quick burst of voltage to ionize the tube, and then once there is a load the freq shifts and it is no longer resonant, so it ballasts.
Not to mention, someone from here made a small multiplier with a little inverter NST. I think it was a 4kv model.
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Full wave Cockcroft-Walton voltage multiplier
