[Prev][Next][Index][Thread]
Re: Corum's Resonator Theory
From: Malcolm Watts[SMTP:MALCOLM-at-directorate.wnp.ac.nz]
Sent: Monday, November 03, 1997 12:44 AM
To: Tesla List
Subject: Re: Corum's Resonator Theory
Hello John,,
I was just re-reading your post and something "dinged"
in my head....
> From: FutureT[SMTP:FutureT-at-aol-dot-com]
> Sent: Friday, October 31, 1997 11:16 PM
> To: tesla-at-pupman-dot-com
> Subject: Re: Corum's Resonator Theory
>
<snip>
> The Corums write on page 11 of their paper "Tesla Coils: 1890-1990
> 100 years of cavity resonator development", that they measured the
> output voltage of a TC having a 24" dia secondary, 780 turns of #10
> copper wire, top loaded with a 24pF ball, and resonant at 67 kHz,
> and they found the predicted and measured coherence time to be
> about 71uS. The TC's predicted and
> measured Q was 60. The next couple of pages show drawings
> that show the energy transfering back and forth between primary
> and secondary for about 308uS before the gap quenches. Then
> they show the voltage increasing about 10 times higher almost
> instantly, then gradually rising to almost double again within 5
> RF cycles which is the coherence time.
10X is not possible. Suppose Vo prior to quench is rise by Q. The
rise by VSWR = 4Q/PI which is only about 30% higher. I think they
changed the scale to exaggerate the effect. I mentioned to Mr Corum
that by this time, system energy is normally a fraction of the
initial energy. I got complete silence on that statement. Again I note
that I have not seen a single scope photo from them, only drawings :(
Malcolm
<snip>