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Re: Random TC Questions

Original poster: "Dr. Resonance" <resonance@xxxxxxxxxx>



Sources of inexpensive 20 amp EMI filters include Fair Radio Surplus Sales,
Lima, OH, and C&H Surplus, Pasadena, CA.  Also A.R.E. (Apache Reclamation
Electronics, Phoenix, AZ.

About $10-$15 per filter.

If you want new filters you can buy them from Digi-Key or Allied
Electronics.

Dr. Resonance
>
> Ed,
> Are you suggesting to purchase an EMI filter or make something up? Where
> exactly is this filter located? Between the wall outlet and the variac or
> between the variac and NST or where? I definitely want to avoid causing
> myself or anyone else problems of any kind.
> Paul Brodie
>
> ----- Original Message -----
> From: "Tesla list" <tesla@xxxxxxxxxx>
> To: <tesla@xxxxxxxxxx>
> Sent: Monday, March 14, 2005 6:55 PM
> Subject: Re: Random TC Questions
>
>  > Original poster: Edward Wingate <ewing7@xxxxxxxxxxxxxxxx>
>  >
>  > Tesla list wrote:
>  > David,
>  >
>  > If you want to keep the neighbors, the phone company(long personal
story)
>  > and your electronic equipment happy, an EMI filter is absolutely
needed.
>  > They're so cheap, there's no reason not to use one. A poorly tuned coil
>  > without an EMI filter can burn your house down by causing arcing in the
>  > wiring in your walls. Try to explain that one to your insurance rep.
>  >
>  > Ed Wingate RATCB
>  >
>  >>Original poster: "Harold Weiss" <hweiss@xxxxxxxxxx>
>  >>
>  >>Hi Ben,
>  >>
>  >>It isn't absolutely needed, but if you have one kicking around, use
>  >>it.  It will help keep RF trash to a minimum.
>  >>
>  >>Keep the gap in your strike rail, and absolutely ground it.
>  >>
>  >>David E Weiss
>  >>
>  >>>Original poster: "Medina, Benjamin (UMR-Student)" <bamxbb@xxxxxxx>
>  >>>
>  >>>Hello Folks. I have two random questions:
>  >>>
>  >>>1. Is an EMI Filter between the NST primary and the power connection
>  >>>recommended or required? This is a school project.
>  >>>
>  >>>2. I've seen images of the strike rail having a gap (not connected or
>  >>>soldered). I read somewhere that there should be a gap so that the
>  >>>strike rail does not form an inductance which may interfere with the
>  >>>operation of the primary/secondary magnetic coupling. What happens if
I
>  >>>connect the strike rail and then run that to the ground?
>  >>>
>  >>>Thanks again!!
>  >>>
>  >>>Ben Medina
>  >>>Rolla, MO.
>
>
>