Re: Sparklength inquiry

To: tesla-at-pupman-dot-com
Subject: Re: Sparklength inquiry
From: "Malcolm Watts" <MALCOLM-at-directorate.wnp.ac.nz> (by way of Terry Fritz <terryf-at-verinet-dot-com>)
Date: Sun, 27 Sep 1998 18:52:33 -0600
Approved: terryf-at-verinet-dot-com

Hi Greg,
 
> > > My two coils land pretty close to the square-law curve
> > > that is defined by your two coils.
> > > And Ed's halfwave coil lands fairly close as well, beating
> > > the revised curve by about 20%.  But a halfwave coil should
> > > be more efficient at producing spark length -- since the spark
> > > channel is supported at both ends, the ends of the spark need
> > > be only as thick as the base of a single spark half its size.
> > 
> > And also a higher voltage between the terminals (by about SQRT2) due
> > to energy sharing. I got the same sort of result for my minicoil twin.
> 
> What is the 'energy sharing' effect?

Start with some E going to one resonator. Vo = SQRT(2E/Cs)
Now halve E going to that resonator. Output drops by only SQRT(2).
Let the other half E go to another resonator. You now has a potential 
difference between them of 2SQRT(E/Cs) which is SQRT(2) higher than 
the p.d. developed by the one resonator.

Malcolm