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Re: Unwanted LC

Hi Dan,

You may want to check out the following...

http://users.better-dot-org/tfritz/site/papers/primarycircuits/pricir.html
http://users.better-dot-org/tfritz/site/papers/spark1/sparkgap.html
http://users.better-dot-org/tfritz/site/papers/rcfilter/rcfilter.html
http://users.better-dot-org/tfritz/site/papers/rlcfilter/rlcfilter.html
http://www.peakpeak-dot-com/~terryf/tesla/misc/Filter.jpg
http://users.better-dot-org/tfritz/NSTFilt.jpg

I would NOT consider the use of inductors.  Resistors and capacitors
provide excellent noise filtering.  The last URL above is my favorite for a
15kV/60mA neon system.  The parts are from Digi-Key.  This, and putting a
fast fuse on the NST input, should fully protect the NST against everything.

Cheers,

	Terry


At 08:16 PM 05/14/2000 -0500, you wrote:
>Greetings Tesla Fans!
>
>I have gotten differing advive on RF protection from what I call two
>reliable sources. One says to use RF chokes and RF bypass capacitors. The
>other says use either/or but not both at the same time. The reasoning
>behind the second advice is that the L from the chokes and C from the
>caps can set-up unwanted, destructive oscillations in the tank. Who is
>right?
>
>Right now my banked NSTs are only being protected by ~30 turns of 20-22
>awg  magnet wire wound around a ~1.5 plastic tube. Does this sound
>sufficient? I have never heard any "real" advice on RF chokes. Most of
>what I heard said that winding them is really a shot in the dark, and
>just about any inductance will work.
>
>Thanks for input,
>
>Dan
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