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Re[2]: Coil Design for Review
thank you for the advice. I figured i would start with a static gap
since this is my first coil.
thanks again,
paul
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Subject: Re: Coil Design for Review
Author: Tesla List <tesla-at-pupman-dot-com> at InterNet
Date: 10/28/99 3:13 AM
Original Poster: "Dr. Resonance" <Dr.Resonance-at-next-wave-dot-net>
Max gap for NST should never exceed 0.25 inches. We usually strive for
around 0.170 inch max --- beyond this you will start losing NST's because
they are not designed for this type of work. A synchro rotary 1800 RPM 4
pole would give you better output with less strain on your NST.
Regards,
Dr. Resonance
-----Original Message-----
From: Tesla List <tesla-at-pupman-dot-com>
To: tesla-at-pupman-dot-com <tesla-at-pupman-dot-com>
Date: Wednesday, October 27, 1999 12:26 AM
Subject: Coil Design for Review
>Original Poster: pmathus-at-learningco-dot-com
>
> Kind Tesla Gurus,
>
> Could you take a look at my TC design and tell me if you think it'll
>work?
> I've started work on the sparkgap and ordered the cap, but the rest is
> changeable at this point.
>
> Is my sparkgap too wide? Am i going to tap out the primary trying to
>tune?
>
> Most importantly, will this make big, scary sparks?
>
> thanks, and any comments welcomed.
> paul mathus
>
>
**************************************************************************
>
> transformer: 2 banked 12kv 30ma NSTs, for 12kv 60ma total.
>
> sparkgap: static RQ/TCBOR type gap, fan cooled, 13 gaps of .03 each
for
> total gap of .39"
>
> tank capacitor: Fair Radio .01 mfd 100kvdc cap
>
> primary: flat, 15 turns of 1/4" refrigerator tubing at 1/4" spacing,
> inside diameter 8", outside diameter 22.5", 60ft total. inductance
> 92.9 uh
>
> secondary: 6" x 24", 22 gauge magnet wire, 37 turns/inch. approx 900
> turns. resonant freq 304 kHz unloaded, 154 kHz loaded with toroid
> below.
>
> Toroid: 30" x 6" aluminum ducting, C(pf)=32
>
>