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
Subject: Re: 1/4 Wave Theories - do a test?
> 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
> >> 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
> >#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.
> The only thing changed is the toroid and primary tap.
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.