Re: [TCML] 5" Sparks - Approx 35 watts input power: Tesla was correct!

[FutureT@xxxxxxx]

In a message dated 3/12/2008 10:48:03 P.M. US Eastern Standard Time,  
resonance@xxxxxxxxxxxx writes:

>John & Bart:

>With parallel copper tube spark gaps,  and 30-60 mA drive I usually obtain
>1.27 Freau factor.  With  hyperbaric gaps, much more efficient quenching, I
>use 1.55 Freau  factor.  I can never seem to hit the 1.7 but as I recall John
>was  using a 42 inch sec coil when making this measurement.


Dr. R,
 
I usually used a 23" or 24" tall secondary of 4.2 or 6.5" diameter.   For my
1.7 tests.  But I was using an SRSG.  Using a static gap I got  10% shorter 
sparks.
This would reduce the figure to about 1.5.  
 
Cheers,
John
>
>The Esec = -L x dI/dt factor seems to become very  important as the L is very
>large with a large diameter inductor.   Also, the hyperbaric gap will reduce
>the dI/dt factor, and of course  increase quenching, which allows a lower
>number of notches to achieve  good quench, especially in a small system.

>Dr.  Resonance








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