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home grown plasma globe



Original poster: "Mike" <mike.marcum@xxxxxxxxxxxx>

I plan on getting (eventually) a 75L round-bottom flask to make a 22" plasma globe, hopefully with white or blue sparks (argon or N2). Is there a cookbook somewhere on how to do this? I already have a vacuum pump that can go down to 20 micron with a digital guage on it (refridgeration type). I plan on trying to make it look like the sparks from the 12" ones at Spencers and not just a bright glow when it's touched. How much voltage/current do i need to jump 22" and what's the output waveform and frequency usually? I guess that depends on the gas and pressure but just need a ballpark figure. Now I wish I woulda saved my old plasma driver board when the 12" globe went belly up so I coulda took some measurements. I plan on using this to decorate my pc case and run it off 1 of the 12vdc rails of the atx supply.

Mike