Re: [TCML] Large Plsma Tube

["David N. Van Doren" <DNVanDoren@xxxxxxxxxxx>]

Thanks Scott - Those globes on the link, what pressure are they being run 
at.
Getting gas is not a problem. Designing and building the fixture isn't a 
problem.
My only concerns are, can I do this with out vacuum and what kind of power 
will be needed. I suppose that if I need a power source other than what I 
have I'll have to decide if
I want to buy/build such a thing. And vacuum scares me with such a large 
GLASS tube. I don't particularly want to put an implosion gage around it. I 
know from past experience that surface tracking on glass goes for ever on 
minimal voltage in air. With my old 6kw TC at very low power just barely 
ticking over the sparkgap it would track the in side of this tube with quite 
a bit of air arc out the other side.

Dave
----- Original Message ----- 
From: "David N. Van Doren" <DNVanDoren@xxxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Thursday, November 29, 2007 11:04 AM
Subject: [TCML] Large Plsma Tube


Hello All

I have a large glass tube 6" o.d. with .25" walls and 5 feet long. ( from 
and old blueprint machine) And it's just begging to be made in to a large 
Plasma tube. Somewhere I saw a list of gasses and their conductivities and 
can't seem to find it. Does any body know where it might be? If any of you 
have any experience or info that might help with this project I'd greatly 
appreciate the boost in the learning curve.
I have several HV sources that I hope will be usable for this project such 
as an 85KV x-ray transformer or an 50 KVDC power supply and of course my 
Tesla coil ( an OBIT powered magnifier)
This has the potential (sic) to be a very beautiful display.

Thanks
Dave
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