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Re: Grounding ?'s
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To: tesla@pupman.com
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Subject: Re: Grounding ?'s
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From: richard hull <rhull@richmond.infi.net>
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Date: Wed, 5 Feb 1997 08:11:58 -0500 (EST)
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Subscriber: rhull@richmond.infi.net Fri Feb 7 00:06:00 1997
At 10:26 PM 2/4/97 -0700, you wrote:
>Subscriber: al263636@academ02.sal.itesm.mx Tue Feb 4 22:13:43 1997
>Date: Tue, 4 Feb 1997 09:22:19 -0600 (CST)
>From: Jorge <al263636@academ02.sal.itesm.mx>
>To: rpittman@juno.com
>Cc: tesla@pupman.com
>Subject: Re: Grounding ?'s
>
>
>Ronnie Pittman wrote:
>
>< Hi all,
>< I am just about done with my first attempt at a coil and I had a
>< couple questions.
>< I am wanting to have it done for the science fair that I am
>< having for my students this thursday. My first problem is that the fair
>< is in the gym. I do not think I have the time ro run a good RF groundto
>< a stake outside. Thus my question, I know it has ben said over and over
>< not to use the ground on the outlet but is there any other way to run
>< one in a gym. My transformer is really small -6kv @ 30ma- and the
>< circuit in the school gym is pretty substantial any ideas?
>
>Hi,
>
>
> Instead of connecting the bottom of your secondary coil to
> earth, why dont you have it arc to the top of your secondary
> coil, just like a bipolar Tesla Coil, you can do this by placing
> piece of stiff wire( some clothe hanger wire will do), connect the
> wire to the bottom part of the secondary and place it some 6-7"
> inches away from the top of your secondary terminal, I`ll try to
> illustrate:
>
>
>
> __________ . .
> terminal(__________)./ \./O
> II I
> secondary II I
> II I
> II I stiff wire
> ========== I
> primary ========== I
> ________________________I__
> \_________/
>
> Connect the bottom of the sec.
> to the stiff wire.
>
>
>
> I think you can also connect the bottom of the sec. directly to
> the primary but im not really sure, I think this will give you
> a much thicker, whiter arc but there`s a shock hazard with this
> config.
> ! Something we wouldnt want to have on a science fair !
>
>
>
> Jorge Fuentes
>
>
Jorge,
Whoa there fella!! Unless you are actually building a bipolr coil, you
gotta have ground connected to the base of the resonator. Your suggestion
might work if the primary circuit has a path to earth in it. This is often
the case with center tapped neons, but the poor neon will have its secondary
resistance in the ground path. I would strongly recommend against this if
you value the neon.
Richard Hull, TCBOR