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Re: home grown plasma globe

Original poster: "D.C. Cox" <resonance@xxxxxxxxxx>



If you're on a budget, forget the idea of a 30 inch globe. The volume of a sphere goes up as the cube of the radius and the power required to drive it becomes rather large. We sell our driver boards to museums for $750.

Also, keep in mind that unless you bake out the flask in an oven for 24 hrs it will become a glowing fuzzy ball as the plasma knocks individual molecules loose from the interior walls of the flask.

I could probably sell you one for $450 and that's a bargain!

Dr. Resonance



How much would a supply be Dr. R? It'd be nice to have a 30" globe full of xenon (or what ever is used for the TC-ground-arc white color), but at $9600 just for the globe everywhere I googled, a bit out of my price range for a few years. Hence the flask version, even tho just the 72L flask is nearly $1000. Kinda sucks everything on the biggish side and glass is expensive. Probably should learn to blow my own lol.

Mike
----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Monday, October 10, 2005 10:29 PM
Subject: Re: home grown plasma globe


Original poster: "D.C. Cox" <resonance@xxxxxxxxxx>



We have a dual MOSFET circuit that drives our large flyback and globes up to 30 inch dia.

Dr. Resonance



> Original poster: "Mike" <mike.marcum@xxxxxxxxxxxx>
>
> it's touched. How much voltage/current do i need to jump 22" and
> what's the output waveform and frequency usually?

I don't know if this helps, but a 24" globe with 100L flask at the Museum
of Science used a single 40VDC supply and power FET feeding the flyback.
I don't know what the waveform applied to the gate looked like.



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