Sadudu, lovely looking tubes, well done! What kind of warranty do you
provide on them?

Best,

Nick

On Tue, Dec 3, 2024 at 6:22 AM Instrument Resources of America <
[email protected]> wrote:

> 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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