Re: [TCML] Sphere Topload Coil

["Peter Terren" <pterren@xxxxxxxxxxxx>]

I always regreted not taking photos of the comparison between breakout 
pattern of different toploads when I last tested them. One day I'll do it 
because it really makes a difference.
I like Terry's multisphere setup but I can't get the gazing balls in 
Australia. Seems electostatically similar to a toroid of similar diameter so 
much more likely to breakout than a single big sphere.

Peter
www.tesladownunder.com

----- Original Message ----- 
From: "bartb" <bartb@xxxxxxxxxxxxxxxx>
To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
Sent: Tuesday, February 19, 2008 10:25 AM
Subject: Re: [TCML] Sphere Topload Coil


> 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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