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Re: Grounding ?'s



At 10:26 PM 2/4/97 -0700, you wrote:
>Subscriber: al263636-at-academ02.sal.itesm.mx Tue Feb  4 22:13:43 1997
>Date: Tue, 4 Feb 1997 09:22:19 -0600 (CST)
>From: Jorge <al263636-at-academ02.sal.itesm.mx>
>To: rpittman-at-juno-dot-com
>Cc: tesla-at-pupman-dot-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 -at- 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