Re: Big TC design

To: tesla-at-pupman-dot-com
Subject: Re: Big TC design
From: "D.C. Cox" <DR.RESONANCE-at-next-wave-dot-net> (by way of Terry Fritz <terryf-at-verinet-dot-com>)
Date: Wed, 02 Dec 1998 15:13:36 -0700
Approved: terryf-at-verinet-dot-com

to: Marco

The best idea here is to use some "scrap" 10 AWG wire to wind a large
primary such as 1-15 turns and then do some testing.  After you have
experimentally determined the proper resonance point, then throw away the
scrap wire and make your final primary with copper tubing.  This method is
cheap, easy, and best of all --- it works without going through a lot of
theory that may or may not be the best setup for your particular coil. 
Some scrap house wiring with PVC insulation works great for these tests and
then is discarded after the experiments are over.

DR.RESONANCE-at-next-wave-dot-net


----------
> From: Tesla List <tesla-at-pupman-dot-com>
> To: tesla-at-pupman-dot-com
> Subject: Big TC design
> Date: Wednesday, December 02, 1998 6:23 AM
> 
> Original Poster: "Marco Denicolai"<Marco.Denicolai-at-tellabs.fi> 
> 
> What I am wrestling with now is a rough design of secondary and primary
> coils:
> 
> - secondary 15" wide by 60" high, 931 turns, 73 mH, 112/62 kHz
> - toroid 10" section 60" outside diameter 62 pF
> - primary spiral 18" inner diameter, 12 turns, 128 uH
> - --> Primary capacitor must be 0.056 uF
> 
> I would like to maximize the capacitor size, to be able to pump more
energy
> into the primary. The problem is that, having a big secondary, I must
have
> a big primary inner diameter too. With just 12 turn of primary my
capacitor
> (required to be tuned) drops down to 0.056 uF. I would have liked at
least
> a 0.1 uF...One possibility is to use only 8 turns (--> Cap = 0.123 uF).
> 
> With 0.056 uF and 20 kV the cap energy would go up to 11.3 Joules, while
> with 0.123 uF up to 24.6 Joules.
> 
> Any suggestions anybody?
> 
>