Re: [TCML] Spark gap Resistance

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

Thank you very much gentlemen.
Bart there's enough info there to do a thesis!
I know full and well about the difficulties of modeling plasma, I guess I 
was hoping that someone arrived at a suitable approximation. I don't look 
for exact numbers when I model TC's because of the uncertnty of the spark 
gap and load. I look for trends and approximate magnitudes. but I'm seeing 
something that doesn't make sense, which I'll start a different thread 
about.
I guess I'll just have to do some ringdown tests with the oscope and compare 
damp down rate and notches and back approximate.
BTW the difference between using 1,2,3 or 4 ohms for a spark gap is big.
            Until I read about the 220k-1.5pf/ft approximation, I had 
arrived at ~2Meg
            parallel to C2.
----- Original Message ----- 
From: "David N. Van Doren" <DNVanDoren@xxxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Monday, November 19, 2007 10:43 AM
Subject: [TCML] Spark gap Resistance


Does anyone have any data on spark gap resistance?
and for that matter Streamer impedance?
I've been doing some simulations, and for the lack of any better number I've 
been using 4 ohms for spark gap R's and have tried using 220kohm+1.5pf'/ft 
for streamers, but doesn't always seem to look right in the sims. Trying to 
characterize plasma is always difficult at best.

Thanks

Dave
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