Re: bi-polar (center-fed) TC

To: tesla-at-pupman-dot-com
Subject: Re: bi-polar (center-fed) TC
From: "davidhosking" <davidhosking-at-bigpond-dot-com> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
Date: Mon, 10 May 1999 16:50:57 -0600
Approved: twftesla-at-uswest-dot-net
Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

Would 2 unmatched resonators,say a 800 turn 8inch diameter joined at the
base by a suitably long coupling conductor to say a 1000 turn 6inch
resonator each topped with toroids produce longer sparks than just the 8inch
resonator grounded?
I envisage the 8inch resonator would be excited by a helical primary at it's
base which would need good insulation as it would float at whatever voltage
it so desired!
I have 2 such secondaries, any ideas if this is viable ?
Many thanks in anticipation,
David Hosking.
-----Original Message-----
From: Tesla List <tesla-at-pupman-dot-com>
To: tesla-at-pupman-dot-com <tesla-at-pupman-dot-com>
Date: Monday, May 10, 1999 7:48 PM
Subject: Re: bi-polar (center-fed) TC


>Original Poster: "Malcolm Watts" <MALCOLM-at-directorate.wnp.ac.nz>
>
>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
>
>