Re: Magi initial design

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: Bart Anderson <classi6-at-classictesla-dot-com> 

Just for the record since Dr. R. approaches the toroid C in-situ of a coil, 
both Fantc and Javatc actually find the effective capacitance of the toroid 
in-situ with the coil as well as it's surroundings, distance from ground 
level, etc.. The programs don't assume any particular percentage, they 
actually compute the effective capacitance. In Javatc, the topload 
capacitance identified is what it is. The value of Ces is where the topload 
and everything else is pulled in and the work is performed to compute the 
effective system capacitance.

Bart

Tesla list wrote:

>Original poster: "Dr. Resonance" <resonance-at-jvlnet-dot-com>
>
>Remember, atop a Tesla coil a toroid will actually have a capacitance 10%
>less than it's free air capacitance.  The coil below acts as a shield for
>the electrostatic lines and reduce the cap value approx 10%.
>
>We measured this value for most all coils with a toroid to coilform dia.
>ratio of 2:1.  7.5% works good if the ratio is 3:1.
>
>Some programs may address this and automatically deduct it but you need to
>ask the programmer if this has already been deducted in his program --- some
>don't.
>
>Dr. Resonance
>
>Resonance Research Corporation
>E11870 Shadylane Rd.
>Baraboo   WI   53913
>----- Original Message -----
>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: <tesla-at-pupman-dot-com>
>Sent: Sunday, November 02, 2003 1:40 PM
>Subject: Magi initial design
>
>
> > Original poster: "J. B. Weazle McCreath" <weazle-at-hurontel.on.ca>
> >
> >
> > Hello Coilers,
> >
> > Here's the starting design I've come up with for my first attempt at
> > building a magnifier style TC.  I'm open to any and all comments or
> > critisisms:
> >
> >     Primary - 12 turns of 1/4" copper tubing on 10 inch
> >               PVC form, tapped at 8.8 turns. L = 40 uH.
> >               With a 0.011 uF. cap,  Fres = 320 kHz.
> >
> >     Secondary - 8" x 24" of #12 (273 turns) on a 8 inch
> >                 PVC form.  Approximate L = 4.34 mH.
> >                 Fres = 700 kHz.
> >
> >     Extra Coil - 4.2" X 16" of #22 on 4.2 inch PVC form
> >                  L = 8.34 mH.  Fres = 320 kHz with a
> >                  toroid of 22 pF.
> >
> >     Toroid - 20" x 6" yielding 22 pF. as per WinTesla
> >              and other formulas.
> >
> > 73, Weazle, VE3EAR/VE3WZL
> >
> > Details of my "Hyperbaric Gap" and Tesla coil are at:
> > http://www.hurontel.on.ca/~weazle
> >
> >
> >
>
>
>
>