Mystery Tube

[Nicholas Stock]

Any ideas? No gas by the looks of it though....

[Jasper nagle]

Could have been a lab sample but specifics no idea if you sell it let me know 

On Wed, 22 Feb 2023 at 11:58 am, Nicholas Stock <nick...@gmail.com> wrote:

Any ideas? No gas by the looks of it though....

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Sent from my iPhone

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[jb-electronics]

Neatm looks like an Ericsson lab sample:
http://www.jb-electronics.de/html/elektronik/nixies/n_rd125.htm . Where
did it come from? Jens

On 2023-02-21 10:58 p.m., Nicholas Stock wrote:
> Any ideas? No gas by the looks of it though....
>
>
>
>
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>

> Sent from my iPhone
>

[Nicholas Stock]

Looks very much like that Ericsson lab sample Jens. What voltage did you test yours at? A quick plasma globe test didn't show any gas ionization, so I fear it has leaked at some point (or wasn't a functional sample...).

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[jb-electronics]

My apologies, I honestly don't remember the ignition voltage, I got this tube back in 2009 I believe. I seem to vaguely recall that I needed a rather high voltage, and in some of the photos you can see that parts of the bottom wires light up as well, so there are definitely some issues with those samples. Where did yours come from? Jens

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[Audrey]

Very very interesting tube ❤️

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[Audrey]

> or it wasnt a functional sample

It appears that there is cathode sputtering on the glass so it probably was functional at some point. You should see if the glass is crumbly around any of the pins.

[Jon]

I think it was only Ericsson that used that B26A base on nixies?

Jon.

[SD]

"A quick plasma globe test"... thank you for stating that.  I recently purchased some tubes but have not put them in circuit, and was unsure, but the "plasma globe test" is a great idea. My purchases were ok. At least they were not gasless, I should say.

[Nicholas Stock]

Happy to help! 

Nick

Sent from my iPhone

On Feb 23, 2023, at 18:43, SD <scd...@gmail.com> wrote:

"A quick plasma globe test"... thank you for stating that.  I recently purchased some tubes but have not put them in circuit, and was unsure, but the "plasma globe test" is a great idea. My purchases were ok. At least they were not gasless, I should say.

To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/c84e1dbb-0087-4e72-95dd-3dd1923b049en%40googlegroups.com.