Re: Line filter -- where to ground it?

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Original poster: "resonance" <resonance@xxxxxxxxxxxx>



My 15/30 coil puts out a 20 inch spark.  36 inches would only be 
possible if you were using a 24 inch dia. sec coil.

With small nsts, since you don't have enough current to form a drive 
a large plasma, the usual equation for potential developed across an 
inductor applies, ie,
-L x dI/dt.  The more current you can feed an nst style TC the better 
it will perform.

Dr. Resonance



> I am going to wire a line filter behind a neon sign transformer in
> backwards, but where should I ground the filter to? The NST case, or
> the mains ground?
>
> The NST case is going to be grounded to the RF ground (I'm using a
> Terry filter on the high voltage side.)
>
> Also, out of curiosity, how long of a spark would you expect a 450
> watt 15kV 30mA NST to realistically be able to put out?
> DeepFriedNeon's calculator said 36" but that seems very long.
>
> http://www.deepfriedneon.com/tesla_f_calcspark.html
>
> Thanks,
>
> --Forest