Re: [TCML] Spark gap Resistance

[Jim Lux <jimlux@xxxxxxxxxxxxx>]

-----Original Message-----
>From: Dave Pierson <davep@xxxxxxxx>
>Sent: Nov 19, 2007 8:00 AM
>To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
>Subject: Re: [TCML] Spark gap Resistance
>
> 
>>Does anyone have any data on spark gap resistance?
>   Entire books have been written on this.
>    8)>>
>   (Gaseous Conductors, by Cobine, is one...
>    Its in Google BOOKS dunno if downloadable.
>    I've a paper copy, but never absorbed it.))




>    
>>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,
>   This gets tricky, since arc (by definition, and i think spark, also
>   are _negative_ resistance phenomena....

negative dynamic impedance (that is, as the current increases, the voltage drop decreases (or doesn't increase in proportion to the current), however the spark will have overall positive resistance.

(otherwise it wouldn't dissipate any power, and it clearly does).

Jim
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