Re: topload raise distance ?

• To: tesla-at-pupman-dot-com
• Subject: Re: topload raise distance ?
• From: "Barton B. Anderson" <tesla123-at-pacbell-dot-net> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Tue, 30 May 2000 21:50:04 -0600
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

Hi Jeroen, 

I will second Terry's guestimate here. Last week during some frequency
measurements with raised and lowered top loads, I had to keep the system at low
power to prevent breakout. During the tests when the top load was set high
above the secondary, if I put a little too much power into the coil, the top of
the secondary winding was prone to arcing. The 1/4 O.D. of toroid actually
sounds very reasonable (if you get arcing or lots of corona at the top, just
lower it a bit). 

Bart 

Tesla List wrote: 
>
> Original Poster: Terry Fritz <twftesla-at-uswest-dot-net> 
>
> Hi Jeroen, 
>
>         Without getting really complex, about 1/4 the outer diameter of your 
> toroid is pretty good.  So if your toroid is 20 inches in diameter, I would 
> raise it about 4 inches form the top secondary winding to the lowest part of 
> the toroid.  It is not super critical but if it is too high you will get arcs
>
> of the secondary top winding which could burn it up. 
>
> Cheers, 
>
>         Terry 
>
> At 10:04 PM 5/30/00 +0200, you wrote: 
>
> > 
> > 
> > 
> > Hi all 
> > 
> > I finaly got some first light off my coil, but still need some work done
> for 
> > something larger (only 1 spark of about 5 inch) 
> > 
> > Does someone have a formula or something like that, or a standard of some 
> > kind for the distance of the turoid above the secondary. 
> > 
> > 
> > 
> > greetings from Jeroen from Holland

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