Re: Strike Ring

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "by way of Terry Fritz <teslalist-at-qwest-dot-net>" <Esondrmn-at-aol-dot-com>

In a message dated 6/5/03 7:19:19 AM Pacific Daylight Time, 
tesla-at-pupman-dot-com writes:


>Hi group,
>          First off, thank you for your replies to "Strike object and Terry
>filter"!  Just needed some good opinions and info.  Now I have a question
>about the strike ring to protect the primary (and hence the NST's) from
>taking a direct strike from the output of the coil.  My question is, how
>high above the primary (or how low below the toroid) should I place the
>ring and how much distance should I leave from end to end of the ring so
>that I have no where near a shorted primary turn.  My secondary is 4" in
>diameter along with the cross section of my toroid and the toroid has a 25"
>main diameter.  The toroid is approximately 3 ft. from the primary which is
>a flat spiral.  My power supply is 4- 15 kV 30 mA NST's in parallel (1.8
>kVA).  It uses a multiple static gap with forced air over the gaps and a
>plate capacitor of 2.2 nF.  If I am leaving out any necessary info, let me
>know.  You may be able to find any needed info at my web site at the
>bottom.  Thank you very much for your help!  With all of the info you guys
>have given me, I have become very close to completing my First coil.
>
>Jeremy Gassmann
>Cincinnati, Oh


Jeremy,

I place my strike rails 2" to 3" above the plane of the primary and out 
past the last turn.  I glue short pieces of plastic to the ends of the 
radial supports that hold the primary.  Leave an air gap of 2 to 3 inches 
and ground the strike rail to your main RF ground.

Ed Sonderman