RE: [TCML] Sphere Topload Coil

[resonance@xxxxxxxxxxxx]

This is a good coil design.  Switching to a hyperbaric type spark gap will
improve your performance.  Hyperbarics work great at higher power levels,
ie, 2-4.5 kVA.

Dr. Resonance



>
> Hi,   just your basic Ol' coil :  4" dia sec  wound to 24" , #26 wire
>
>                                       Pri.-  .25" copper tube /flat spiral
> ...1.25" spacing from the sec.,
> .25" spacing bettween turns (12
> total ),
>                                                 tapped at the 11th turn
>
>                                             homemade poly oil caps (TCBOR
> )  APPROX  .028mfd (this is a
> guesstament , I dont have a
> cap meter
>                                          right now.
>
>                                               1" copper pipe gaps , with
> two good sized muff fans for
> cooling
>
>                                                       Power :  1.5kva
> "baby pig" ,
> ballested  UP TO
> 3kva
>
>                                Top Load,...four 8" SS Gazing Balls ,
> outer most surface of balls set at 27"
> (balls are on telescopic brass tubing, and
> can be spread out further,  this is
> basically a copy of the topload on the
> Piranha Coil ,Thanks Terry !  ,(but, im to
> cramped for room for that to help much
>                                     Freq. ?   I haven a clue   :-(
>
>    works well and not to many pri strikes .......................> Date:
> Mon, 18 Feb 2008 17:25:55 -0800> From: bartb@xxxxxxxxxxxxxxxx> To:
> tesla@xxxxxxxxxx> Subject: Re: [TCML] Sphere Topload Coil> CC: > > Hi
> David,,> > Sounds great. How about posting the basic specs including
> frequency (if > you have it). I understand being cramped for space. I
> think most of us > are in the same situation. I would expect the 7 x 24
> toroid to be > similar. Breakout and capacitance isn't that far off.
> The 12" might be > something to shoot for, but if you ever do get a
> radius of curvature > that is just too shallow for breakout, you'll be
> quite surprised when it > doesn't. This happened to me and made me very
> aware of the physics > taking place at the terminal. Point charges on
> the sphere is going to be > very uniform if smooth and to some degree
> even when not smooth. If the > ROC is large enough, breakout won't
> occur. It's a weird feeling when > that happens. First thing I did was
> to start adding breakout points, and > I expect others did similar in
> that situation. But it's better to know > what will breakout and what
> won't for a given coil setup. That is > eventually my direction.> >
> Take care,> Bart> > david baehr wrote:> > ........ I use four 8"
> spheres on my LiL' 4" dia coil (static spark gap ), and works quite
> well , but , I was hoping to hold off breakout of the spark a bit more
> ,.... maybe four 12"' s , ?? Before I tried the 'balls', i was using a
> 7" x 24" dryer duct toroid ,.....performance is similer , ...but im
> crampt for space here in da basement ( i could send ya pics if ya want
> )> > > > > > > >> Date: Mon, 18 Feb 2008 16:19:38 -0800> From:
> bartb@xxxxxxxxxxxxxxxx> To: tesla@xxxxxxxxxx> Subject: Re: [TCML]
> Sphere Topload Coil>> >> > > > > CC: . But due to the coil I'm looking
> at (a huge sphere), my > concerns are valid and I'm contemplating a
> multi-sphere configuration > versus a single sphere (something similar
> to Terry's Piranha Coil).> > Take care,> Bart> >
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Dr. Resonance

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