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Re: transistor V spark gap (fwd)





---------- Forwarded message ----------
Date: Fri, 7 Aug 1998 17:23:24 +1200
From: Malcolm Watts <MALCOLM-at-directorate.wnp.ac.nz>
To: Tesla List <tesla-at-pupman-dot-com>
Subject: Re: transistor V spark gap (fwd)

I think I can help here:

> Date: Thu, 6 Aug 1998 17:21:52 +0100
> From: "chris.swinson" <chris.swinson-at-zetnet.co.uk>
> To: tesla list <tesla-at-pupman-dot-com>
> Subject: transistor V spark gap
> 
> I'm using a 8Kv 30ma Neon to power my tesla coil.  I can get up to 11"
> sparks off my terminal.
> 
> What input power would I need for a low voltage high current transistor
> driver?
> 
> My wattage is 240 watts for my Neons, So If I did a 160 volts switch at
> about say 3 amps, which is about 240 watts, could I still get the same 11"
> off my terminal ?
> 
> Or would I need somthing with more currnet like 160V at say 30 amps ?
> 
> Anyone know how to work it out at all ?

You won't be getting anything like 240W actual primary power from 
that transformer (ExBPS) unless the gap is open to around 2Vrms of the 
transformer. So it's all good news if the efficiency of your charging 
circuit approaches 100%.

Malcolm