[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [TCML] Rectifying a Tesla coil
Beautiful specimen of a tube (or tubes?), Kurt!
Is this a 3 phase rectifier? I suppose by having all three tubes share the
same internal atmosphere, their voltage drop remains matched much longer. It
appears to contain some amount of gas or vapor at a low enough pressure to
produce cathode rays, causing the glass on the spiral electrode end to fluoresce
a greenish color, while being high enough to have a purplish glow discharge
in the middle of the envelope. Are their any detectable mercury droplets
inside the tubes, or, are those all just light reflections?
You're probably not producing any x-ray radiation that would even escape the
glass envelope as long as there is a glow discharge visible inside the tube.
It would be interesting to find out if it still works, or was pulled from
service because it became "gassy". I seemed to notice some darkening of the
Nice find, and thanks for sharing it!
In a message dated 8/31/2008 11:36:03 A.M. Central Daylight Time,
A cold elecrode tube device, essentially based on the "point and plate"
principle, is called "Villard Valve", see:
By good luck I was getting hold of a nice specimen:
I tested it, and the tube is working fine:
However I don't operate it for extended time, in order to avoid exposure to
the unknown amount of X-Rax radiation. (Didn't yet try to charge a
**************It's only a deal if it's where you want to go. Find your travel
Tesla mailing list