That is an impressive test wall and camera setup! I like the single red
tube, is that an original 568 for a compare or a painted tube of your own
creation?
Looking at those comparison photos it seems that some tubes suffer fairly
significant poisoning and others very little, though the effect
Thanks David, it had occurred to me that the halogen may eventually react with
the cathodes, but wasn’t sure at what ratesounds like it’s pretty fast.
Cheers.
Sent from my iPhone
> On Jul 18, 2020, at 17:13, David Speck MD wrote:
>
>
> Nicholas,
>
> Iodine (and all of the halogens) pr
Nicholas,
Iodine (and all of the halogens) produce excimers (excited dimers) with
the noble gases. Excimers do produce unusual colored discharges, but
they have a problem -- there is nothing more chemically reactive than an
ionized halogen.
Tubes containing metal electrodes and a halogen "c
In terms of longevity provided by mercury one just need look at the Chinese
QS27-1 and QS30-1 tubes that contain no mercury. They are known to have
very short lives. I also understand that Russian tubes prior to the IN-7,
which does contain mercury, also have very short lifespans. I see a lot of
I wonder if anyone ever tried adding a few iodine crystals to a nixie? I know
it’s added to some plasma tubes to give a certain plasma color (i have
onenice blue tinge to the plasma glow)
Hmm
Sent from my iPhone
> On Jul 17, 2020, at 20:35, Toby Thain wrote:
>
> On 2020-07-17 10
On 2020-07-17 10:00 p.m., Paul Andrews wrote:
> My point really is, is there a way to determine the composition of the
> gases inside a Nixie tube? It would be interesting to know, as this is
> something that is lacking in datasheets.
Get a sufficiently precise spectrogram?
--Toby
>
> I’ll try
My point really is, is there a way to determine the composition of the gases
inside a Nixie tube? It would be interesting to know, as this is something that
is lacking in datasheets.
I’ll try and dig up the Russian paper.
> On Jul 17, 2020, at 9:37 PM, Dekatron42 wrote:
>
>
> Where did you
Where did you read about this by the way?
/Martin
On Friday, 17 July 2020 19:27:39 UTC+2, Paul Andrews wrote:
>
> I recently saw a post that suggested that the addition of a mercury dopant
> to Nixie tubes does not confer the protection that we have all been led to
> believe - apparently the Ru
I should have prefaced that by explaining that it was written by our very
own Jens Boos, who's a member of the group! :)
Nice job Jens!
On Fri, Jul 17, 2020 at 2:34 PM Nicholas Stock wrote:
> Here's the text in question...
>
> In a 2011 email to me, Roger Wolfe, a Burroughs engineer, recalled t
Here's the text in question...
In a 2011 email to me, Roger Wolfe, a Burroughs engineer, recalled the
team’s first fragile attempt: “We put the tube on life test overnight. When
we came in the next day, so much cathode material had sputtered onto the
dome of the tube that the numerals were no long
There is some information in this article, presumably first hand
information from a Burroughs engineer, on the extended life when mercury
was added:
https://spectrum.ieee.org/tech-history/dawn-of-electronics/the-nixie-tube-story-the-neon-display-tech-that-engineers-cant-quit
(just search for m
On Friday, July 17, 2020 at 1:27:39 PM UTC-4, Paul Andrews wrote:
>
> This also got me thinking; if it isn’t mercury that confers a longer life,
> then could it be something else? Could it be fine-tuning the cathode
> material? Could it be fine tuning of the gas mixture and/or pressure? Which
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