[TCML] Spark gap Resistance

[Barton B. Anderson]

You mean Bert. When it comes to spark physics, Bert is "the" man!

Take care,
Bart

David N. Van Doren wrote:
> 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 at comcast.net>
> To: <tesla at pupman.com>
> 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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