Re: [TCML] Rectifying a Tesla coil

[Ed Phillips <evp@xxxxxxxxxxx>]

Hi,

A cold elecrode tube device, essentially based on the "point and plate" 
principle, is called "Villard Valve", see:

http://danielgiroux.neuf.fr/page304.htm

By good luck I was getting hold of a nice specimen:

http://home.datacomm.ch/m.schraner/Villard0696k.jpg
http://home.datacomm.ch/m.schraner/Villard0699k.jpg

I tested it, and the tube is working fine:
http://home.datacomm.ch/m.schraner/Villard0700k.jpg

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 
capacitive device).

Regards,
Kurt"

   Beautiful tube - any idea of the age and intended purpose?  Notice 
the similarity to the Raytheon "B series" tubes - radically different 
electrode geometry in an ionizing gas.  Seems to me I have a Stromberg 
Carlson rectifier here which uses wires for one electrode and spirals 
wound around them for the other.  Haven't seen it for years and may not 
remember correctly.

Ed

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