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rotary electrodes (fwd)
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To: "'Tesla List'" <tesla@pupman.com>
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Subject: rotary electrodes (fwd)
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From: Tesla List <tesla@stic.net>
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Date: Sun, 9 Aug 1998 09:08:24 -0500
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Approved: tesla@stic.net
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From: D.C. Cox [SMTP:DR.RESONANCE@next-wave.net]
Sent: Sunday, August 09, 1998 2:51 AM
To: Tesla List
Subject: Re: rotary electrodes (fwd)
to: Kevin
What cap size are you planning to run? This will give me an idea of the
peak current involved. Bare brass won't work -- it is a rather soft metal
and a cap discharge of .05 MFD or greater will melt it and also produce
very poor quenching. I suggest our 1/2 inch dia. screw in style
tungsten/molydenium alloy which threads into a 3/8-16 NC x 1 1/4 inch long
piece of brass rod which is press fitted into the rotor. Don't use
aluminum as a conducting element -- poor Q factor and conductivity at RF
frequencies. Run the brass thru the rotor (G-10) axially and screw the
tips in each side. Run 4 gaps with approx 9-10 rotating electrodes at 1725
RPM.
DR.RESONANCE@next-wave.net
> Date: Sat, 8 Aug 1998 21:33:50 EDT
> From: Teslaman@aol.com
> To: tesla@pupman.com
> Subject: rotary electrodes
>
> All...
>
> I need some opinions out there on what type of electrodes to use on an
> upcoming rotary. It consists of a 3450 R.P.M. induction motor spinning a
12"
> aluminum disk with a phenolic center for electrical isolation. The power
> handling will be in the 10+ kW range and the stationary electrodes will
be
> 3/8" tungsten tipped, but any ideas on what to use for the 10 spinning
> electrodes other than tungsten? Thought about 3/8 to 1/2" dia. brass
rod,
> any suggestions?
>
> Thanks
>
> Kevin E.