I understand completely. Then there are only two solutions, insulation,
or cathodes that don't deform. Thanks.
Ira
On 12/3/2024 1:21 AM, Sadudu wrote:
1. The first issue: discharge is not actually the main concern. The
spacing in Nixie tubes can be made very small, as seen in some smaller
tubes like the IN16, where the spacing is less than 1mm. One of the
significant reasons for increasing the spacing is that the cathodes
can deform when heated, which can cause short circuits between
cathodes and reduce the yield rate. If you observe closely, the
spacing of some digits is not uniform. For example, the distance
between the IN18’s cathodes and the anode mesh or backplate is larger.
This is to prevent the cathodes from deforming and connecting during
baking
2. The second issue: theoretically, the higher the temperature, the
better, as it is more conducive to removing impurity gases inside the
tube. However, it is usually limited by other factors, such as the
melting point of the glass, the power of the oven, and so on
3. There is no standard thickness for the glass tube; you can choose
the one you prefer.
4. The last issue: because the IN12 is inexpensive, the cost of
producing your own may not even be cheaper than the IN12. The purpose
of mass-producing Nixie tubes is to make a profit; no one will do
business that doesn't make money. The same as your question, why not
top view.
I am Sadudu, a new nixie tube maker. We have made good success on
nixie tube, DGM01 is our first nixie tube. We have now started mass
production . Here is our website : inixielab.com, welcome to visit.
On Tuesday, December 3, 2024 at 10:15:28 AM UTC+8 Instrument Resources
of America wrote:
Regarding question number one. Might it not be possible to hold
the adjacent cathodes just below their ignition point and thereby
lower the voltage between the lit cathode and the adjacent
cathodes? With micro processor control, I would think that just
about anything would be possible.
Ira.
On 12/1/2024 8:05 AM, martin martin wrote:
Have you been yo Dalibor’s site ? He may be the modern expert at
Nixie design. He will certainly answer your questions.
[email protected]
On Sun, Dec 1, 2024 at 07:58 HikariFaith <[email protected]> wrote:
I have a few niche questions related to the making of nixie
tubes I can't seem to find definitive answers to anywhere. I
have a feeling someone here would be able to help me figure
them out.
1. I understand that the cathodes need a certain amount of
separation to prevent arcing, but has anyone tried
alternative methods of cathode production in an effort to
make that space smaller? The two that immediately come to
mind are sputtering tungsten coatings on an insulating
material and the inverse of that, which is coating the back
of the tungsten wire with an insulating material. I had also
been wondering if it would be possible to prevent arcing some
other way.
2. When working borosilicate during the tube construction,
how hot do the components inside get? I'm thinking both in
terms of components directly touching the heated glass and
those not touching (including indirectly). I'm asking to
figure out what thermal tolerances I should look for in
materials used to make a nixie tube.
3. How thick are the walls of a borosilicate nixie tube?
Ideally, I'd have as specific an answer as possible.
4. Why haven't new manufacturers of nixies made any top-view
nixies like the IN-12?
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