Re: Spark Gap Sheilding.

• To: tesla-at-pupman-dot-com
• Subject: Re: Spark Gap Sheilding.
• From: "Ed Phillips" <evp-at-pacbell-dot-net> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Sat, 18 Mar 2000 07:11:29 -0700
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

Tesla List wrote:
> 
> Original Poster: Megavolt121-at-aol-dot-com
> 
> Hi
>     I know that a lot of RF interference from a tesla coil comes from the
> spark gap.(not to mention the primary is transmitting...).. Wouldn't it be
> possible to block out the rf from the spark gap by enclosing it in a mini
> faraday cage? I'm sure this would make the coil a lot "nicer" on the RF
> interference scale
> -Alan

	It probably would be, but you'd have to enclose all the leads to help
very much.  A lot of the hash from the spark gap is in the VHF region
and is determined by the resonant length of the leads.  I suspect that
most interference is caused by the primary circuit.  This would be
particularly true of TV interference.  When I am running a small coil
here (12 kV, 60 ma NST, 24" streamers) in the attic of my garage I can
listen to local BC stations without appreciable interference, but get
somewhat more noticeable interference (horizontal streaks) on the TV.

Ed

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