[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Looking for tungsten for rotary gap
Original poster: "resonance" <resonance@xxxxxxxxxxxx>
We carry screw-in tungsten-molydenum alloy electrodes that we screw
into brass rod stock, 1/2 inch dia x 1 1/2 inches long, and then
press these axially thru 1/2 inch thick G-10 plate x 18 inch dia. for
all of our commercial rotors. These work great as they are
bonded/welded directly to copper threaded part.
These work much better than the TIG electrodes because the TIG
electrodes have no mechanism to attach them to a rotor --- they use
special finned aluminum holders and aluminum is not a good choice for
RF currents. Even in a Tesla oscillator circuit the peak currents
are limited by the series resistance, and any aluminum in the series
circuit will limit your peak current because it offer much higher
resistivity at RF frequencies than copper.
If anyone is interested contact me off-list and I will email them
some photos of our RSG setup.
Original poster: Mike <megavolts61@xxxxxxxxx>
I have a pair of the Miller gaps....they'd make fine stationary
gaps...complete with nice heat sinks.....but they only have tungsten
on one end.....how would you use them as rotary gap elements?
Original poster: Nick Andrews <nicothefabulous@xxxxxxxxxxx>
You might try electrodes like the ones Jeff Mullen had in his coil at
the WWT. They were the electrodes from Lincoln welders used in the
spark gaps of HF arc starters for TIG welders. I think he said they
were about $32 per 4 of them. I imagine Miller welders have something
> Date: Tue, 23 Jan 2007 20:49:09 -0700
> To: tesla@xxxxxxxxxx
> From: tesla@xxxxxxxxxx
> Subject: Re: Looking for tungsten for rotary gap
> Original poster: coils@xxxxxxxxx
> Hi Hal,
> I don't have any available, but I can recommend a supplier if you
> buy some. I have purchased a few rounds of electrodes from them.
> Newburry Park, CA
> my contact there is Tommie Serrano
stiff? Loosen up...
and play hundreds of games for free on Yahoo! Games.