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Re: RF sent to bed without supper
And you think that the how ever many feed of water pipe don't have
significant RF impedance...
Use a counterpoise. A sheet of chicken wire, aluminum foil, etc. comparable
in radius to the height of the coil should work nicely. Then ground the
counterpoise to the third wire in the AC cord for safety.
----------
> From: Tesla List <tesla-at-pupman-dot-com>
> To: tesla-at-pupman-dot-com
> Subject: Re: RF sent to bed without supper
> Date: Tuesday, April 20, 1999 6:28 PM
>
> Original Poster: "Dr. Resonance" <Dr.Resonance-at-next-wave-dot-net>
>
> to: Yuri
>
> An extension cord ground is usually only 12 or 14 AWG wire. Your peak
> secondary currents may be as high as 50-60 amps or more. This is why a
> separate cable is recommended for grounding the bottom of the sec coil.
Use
> 4 or 6 AWG fine stranded welding cable -- very flexible and the fine
copper
> wires conduct the RF currents well. If you are doing a remote demo and
you
> don't have a good exterior ground then clip to a water pipe with a big
> copper alligator clip.
>
> Regards,
>
> Dr.Resonance-at-next-wave-dot-net
>
>
> -----Original Message-----
> From: Tesla List <tesla-at-pupman-dot-com>
> To: tesla-at-pupman-dot-com <tesla-at-pupman-dot-com>
> Date: Tuesday, April 20, 1999 1:22 AM
> Subject: RF sent to bed without supper
>
>
> >Original Poster: "Yuri Markov" <wmondale-at-hotmail-dot-com>
> >
> >In several diagrams of the tesla coil circuit layout, I have seen two
> >different types of grounds labeled - what appears to be a normal
> >ground, for the transformer and such, and an RF ground. Is this
> >saying that the third little hole on my extension cord is not
> >sufficient to ground the base of my secondary coil? Am I meant to
> >drive a six-foot stake into the back yard to ground the secondary?
> >For the record, if it makes a difference, my goal is to have visible
> >sparks, not to scare the neighbors - my power source will be no
> >greater than 15000 volts.
> >
> >_______________________________________________________________
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>