Re: [TCML] ball toroid and arcing from secondary

["Carl Noggle" <cn@xxxxx>]

You could wind a few extra turns of the secondary at a wide spacing, like 
1/4 inch, from the present end of the secondary to the sphere.  That will 
stop the unauthorized corona.  If you have the sphere much closer than about 
1/3 of the secondary diameter to the end of the secondary, it will act like 
a shorted turn and adversely affect the performance of the secondary.

---Carl





-----Original Message----- 
From: Steve Ward
Sent: Tuesday, June 04, 2013 7:19 PM
To: Tesla Coil Mailing List
Subject: Re: [TCML] ball toroid and arcing from secondary

You need to get the sphere as close to the end of the secondary winding as
possible.  I think its easier and safer to trim the PVC down so that there
is only 1/4" of excess beyond the winding so that the sphere can sit within
1/2" of the winding.  Closer would be even better.

You will also want to use a breakout point most likely.


On Mon, Jun 3, 2013 at 3:14 PM, james hutton <jameshutton@xxxxxxx> wrote:

> Hey guys, I'm sure this has been discussed a million times, so if someone
> has a link to a good answer that would be great.
> I switched from a torus shaped topload to a spherical topload. However now
> the discharges are coming from the top of the secondary windings rather
> than from the topload. I know this means that the topload is probably too
> high, but i cant really lower it any more than it already is because there
> is about 3 inches between the top of the pvc and the top secondary 
> winding.
> I guess I could cut that down if I had to. I would prefer not to and even
> If I did have the ball almost sitting on the top winding, I feel like it
> would still be to high unless I cut a hole in the ball the same diameter 
> of
> the pvc.
> I also know some people make small toroids underneath a higher one, but I
> would also prefer not to do this. I don't have the money to buy an actual
> toroid and I want this to look really good (i.e. not a homemade toroid 
> made
> with aluminum ducting and aluminum tape. This is why I'm switching to the 
> 2
> bowls to make a ball in the first place.)
> I was wondering if maybe wrapping the top couple windings in electrical
> tape would work, but I doubt it.
> Any suggestions would be appreciate! thanks
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