Re: Thoughts on spark length and the "Freau Equation"

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <A123X-at-aol-dot-com>

I was kinda wondering if people running coils in the UK have a bit of an 
advantage over coilers in the U.S. since each charging cycle is longer and 
therefore allows for a bigger bang each time. Actually I'm pretty sure now 
that they do, but how much better is what I'm wondering now. 

Mark 

In a message dated 6/10/01 8:16:28 PM Eastern Daylight Time, tesla-at-pupman-dot-com 
writes: 


>
> Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>" < 
> jimlux-at-earthlink-dot-net> 
>
> I would assume that the equation proposed by John Freau for predicting max 
> spark length  (=1.7 *sqrt(VA)) is based on 120 pulses per second.  That is, 
> it's really more of  (length in inches)= 1.7 * sqrt(120 * energy per bang) = 
> 18.6*sqrt(energy per bang in Joules). 
>
> Obviously, there are breakrate effects on spark length, but, for rates in 
> the 100-200 bps range.... 
>
> Comments? 
>
>