Re: [TCML] Secondary coil strikes

[Jeff Miller <jeffmill2@xxxxxxxxxxx>]

Thanks Carl
I will sure try this the next time I fire it up

Thanks ,JM

On May 15, 2012, at 3:35 AM, Carl Noggle <cn@xxxxx> wrote:

> It should be right above or slightly outside the top turn.  the trouble is that the top edge of the secondary winding has a very high electric field enhancement, and the ring reduces this.
> 
> I have also heard of putting a few last turns with a 1/4 inch spacing or so through this open area to connect to the top terminal.  Seems like this should work, but I haven't tried it myself.
> 
> ---Carl
> 
> 
> 
> 
>> Where then should the ring be put  ? Right below the Toroid or right above the top last turn . There is about a 2.5 inch tall area where it could be put. Again the strike were from the top of the winding to the bottom
>> 
>> Thanks ,JM
>> 
>> On May 14, 2012, at 9:59 AM, Carl Noggle<cn@xxxxx>  wrote:
>> 
>>> You shouldn't lower your toroid, because if it is less than about half of the winding diameter away from the coil top, it will act as a shorted turn and reduce your performance.  You can make a turn around the top of the coil with 1/2 inch copper tubing right next to the wire, but leave a break of 1/8 inch or so to avoid the shorted turn.  Connect this tubing to the top of the secondary.  Hopefully this will stop arcing from the top turns.
>>> 
>>> Good luck---
>>> 
>>> Carl
>>> 
>>> 
>>> 
>>> 
>>> 
>>>> Hello everyone,
>>>> Tried my tesla this weekend at our annual pig roast. Work our great, was able to light up 20 4ft and one 8 ft fluorescents. I did have an issue when I let it stand alone and break out. Every once in a while I would get a secondary strike from the top of the coil winding a few turns down  to, it was hard to tell either to the primary or to the very bottom of the secondary where the lead goes to gnd. It is a 6.25" secondary with two toroids, a 3x12 and a 6x24. If you were to look straight at the coil the bottom of the 3x12 Toroid is about 2.25 inches above the top of the sec winding. In your opinion could this be the problem, the Toroid being too far above ? If so I could cut it off, but a lot of work. What would happen if I wrapped 2" wide foil tape around the top of the form, have it about 1/4" above the top of the form, fold that 1/4" over the form, then put my toroids back on . The folded in lip would then make contact the the 12" Toroid .
>>>> 
>>>> Need some help
>>>> 
>>>> Thanks ,JM_______________________________________________
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>>> 
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> 
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