1/4 Wave Theories - do a test?

From:  Malcolm Watts [SMTP:MALCOLM-at-directorate.wnp.ac.nz]
Sent:  Sunday, June 07, 1998 7:00 PM
To:  tesla-at-pupman-dot-com
Subject:  Re: 1/4 Wave Theories - do a test?

Hi Tristan,

> From:  Mad Coiler [SMTP:tesla_coiler-at-hotmail-dot-com]
> Sent:  Thursday, June 04, 1998 3:41 PM
> To:  tesla-at-pupman-dot-com
> Subject:  Re: 1/4 Wave Theories - do a test?

> >> that has 500' of wire in it.  Running it at around 400kHz (1/4 
> >> equals 616') it has almost double the spark length and several times 
> the 
> >> power as when I run at the 1/4 wave frequency. And yes, the coil was 
> >> fully retuned for all experiments.
> >
> >OK - you must be running it with a larger terminal at the lower 
> >frequency. 
> >
> >#1 - top storage capacity is increased lowering the impedance 
> >delivering energy into the output discharge. More of the energy 
> >ending up in the secondary is on tap to feed the discharge in a 
> >shorter time than if it had to come from the coil itself.
> >#2 - if you tapped in more primary turns, primary Q is higher as gap 
> >loss is reduced. This can make a very significant difference to 
> >output in many systems. I noted exactly this by eliminating a source 
> >of loss in a small system last night *without retuning a thing*.
> >You didn't say whether spark gap settings were the same, nor did you 
> >say whether you increased your primary capacitance. Be interested to 
> >hear what exactly you changed.
> >
> >Thanks,
> >Malcolm
> The only thing changed is the toroid and primary tap.
> Tristan 

Not quite. As well as the two things I mentioned above, your resonant 
frequency also changed and I'll bet your coupling constant did as 
well. I remember Scott Myers making exactly the same changes to his 
system and getting an identical result.

Thanks for elaborating.