Hi guys,
thanks for your advice. I think the problem is the one Dalibor pointed
out: with Dumet wire the sputtering is very high. Also, since I am using
no noble gas (except for the less than 1 percent there is in ambient
air), the cathodes are having a much harder time anyway. So for now I
will not install these tubes in a permanent circuit since they would
only last for a few hours.
I will wait for my needle valve (will be here any day now) and try with
Neon (and some day with Argon, too, of course). The ignition voltage
should be drastically lower, and the visibility should increase.
The problem with stainless steel wire is that it outgasses; I have a
glow lamp with two stainless steel electrodes and it glows in a
white-ish blue color, very strange. Will post a picture later this
weekend if I don't forget.
Ah, by the way, I already have a small capacitor-based spot welder, and
so far, for my purposes, it has served me well:
http://www.robbe.de/welma-2000-punktschweissgeraet.html?___store=en
Jens
Keep up the good work !
If you need have some DXF files (vector format) on the digits you
want, or a image of the whole set, in a raster format, throw in my
direction. I'm in good with a guy that owns a steel cutting laser.
4000W of CO2 goodness. He'll run small jobs for me for nothing, as
long as I don't abuse it. That means pester him for work too often.
I still want that "1 - 12" "tri-quad" tube. 3 anodes x 4 cathode sets
(of 3).
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