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- To: Tesla List <tesla-at-pupman-dot-com>
- Subject: Re: Magnet Design for Tesla Coils
- From: richard hull <rhull-at-richmond.infi-dot-net>
- Date: Wed, 12 Mar 1997 23:04:03 -0500 (EST)
> >Thanks for all the great references above. Did you see significant >improvement in coil performance when running at either the 5 or 10 >kGauss level? Also, do you have any "feel" for comparative performance >between this approach and a straight high-velocity vacuum gap? Also, >what'd you use to insulate the magnet poles from the arc - sounds like >it might have been something other than mica? > >Thanks in advance! > >-- Bert -- > >Bert, I have built two different mag quench gaps in the past. (both shown on our video tapes.) One electromagnetic and one permenant magnet type. The electromagnetic type was a definite flop and the permenant magnet version actually worked. It used a converted and milled neon sign transformer E core and neodymium iron boron magnets. The field strength in the gap was ~5500 gauss. Measured with my F.W. Bell gaussmeter. After a number of tests, it was determined that a small 7 static series gap system would kick its butt into the middle of next week on a 1KW system. Due to the complexity of construction, I do not use the magnetic quench actively now at all. I would not recommend it to anyone who already has a nice series gap system. As a Tesla coil builders curiousity, it is the cat's pajamms. Richard Hull, TCBOR
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