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Re: [TCML] Spherical topload SGTC
Make the spiral ridges on the insulator between the two ball electrodes. Try wrapping a large mono filament spiral on the insulator. According to Jim Lux there only need be a slight disturbance. Also you may add a third smaller ball and insulator on top. The idea being shaping the E and B fields coming off the top load
----- Original Message -----
From: Liviu Vasiliu
To: Tesla Coil Mailing List
Sent: Wed, 23 Dec 2009 21:56:42 +0000 (UTC)
Subject: Re: [TCML] Spherical topload SGTC
Possible, but I think that the streamers will tend to break in multiple points of the ridge. I can not control the streamer formation. The sphere has to be perfectly smooth. But one idea is to use the asymetric weak air flow through a orifice in the sphere (with the edges bent inside). The air can be provided through the base of the secondary. But this complicate the things. My idea is just to use a smaller radius sphere, to confine all the streamers on a smaller surface. A nail will provide a branched output. So the "emitter electrode" has to be a sphere.
--- On Wed, 12/23/09, jimlux wrote:
> From: jimlux
> Subject: Re: [TCML] Spherical topload SGTC
> To: "Tesla Coil Mailing List"
> Date: Wednesday, December 23, 2009, 6:43 AM
> Liviu Vasiliu wrote:
> > Hi
> > The streamer tends to rotate when it reaches the
> lateral part of the sphere, so I believe that it has
> something to do with the rising hot current air from the
> > http://www.youtube.com/watch?v=nj0ARi5JTgc
> > Higher break rates will definetively rise the spark
> channel temperature, so I suppose that the "tornado effect"
> can be done easier. One solution would be to rectify the
> NSTs and run it with a varible BPS rotary spark gap (I dont
> have one).
> > Another idea is to glue a little permanent magnet on
> the internal wall of the sphere, so the particles, no matter
> the moving direction, will have spiral movements. That will
> be an idea to experiment in the future..maibe..
> > Another idea is to have a sectionated sphere, with a
> laminar air flow through the thin section (on the upper 1/3
> of the sphere) to create a lower pressure zone on the top of
> the sphere (through Coanda effect). I suppose that the
> streamer formation would be localised on this lower pressure
> zone (top of the sphere), so the single streamer can be
> emitted permanently on the same region of the sphere.
> Some ridges making a spiral up to the top would be all you
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