Re: bi-polar (center-fed) TC

• To: tesla-at-pupman-dot-com
• Subject: Re: bi-polar (center-fed) TC
• From: "Malcolm Watts" <MALCOLM-at-directorate.wnp.ac.nz> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Sun, 09 May 1999 22:46:55 -0600
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

Hi John,

> Original Poster: FutureT-at-aol-dot-com 
> 
> In a message dated 99-05-08 06:17:57 EDT, you write:
>   >snip
> << Streamers and arcs will establish themselves between
> > the two toroids. Sometimes this arrangement is
> > referred to as a "TWIN" coil arrangement. You can
> > get toroid-to-toroid strikes that are almost
> > double what you would get from a single coil.
>  
> > Ed Wingate and others have built very impressive twin
> > coil systems.
>  
> > Fr. Tom McGahee >>
> 
> 
> Fr. Tom, all,
> 
> Based on the square law for spark length vs. power input, I would
> expect the sparks from a twin coil or bi-polar coil to be about 40%
> longer for the power input than from a normal TC (just my thoughts,
> I haven't done any comparison tests).  
> 
> Has anyone done a careful comparison?
> 
> John Freau

I've seen this on a mini-twin where the base of the driven resonator 
was connected to another resonator rather than ground. I got six inch 
single channel sparks connecting the two resonators vs four 
connecting a single driven resonator to ground at about 30W input 
and same primary energy.
     Bert Hickman once posted a nice piece which showed that there is 
a SQRT(2) higher potential difference between the resonator tops than 
there is across the single grounded resonator for the same primary 
energy. Yet again it shows some correlation between discharge length 
and output voltage in some situations.

Malcolm

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