Re: [neonixie-l] Used or NOS?

[JohnK]

[yes, my link included one of those too. Maybe the "see also" is a little 
buried.]


jk


- Original Message - 
From: "Marcin Adamski" 

To: 
Sent: Wednesday, March 16, 2016 2:32 PM
Subject: Re: [neonixie-l] Used or NOS?


Have no answer, except that if they wanted to have a good vacuum why not 
to use getter. But why do they needed the vacuum envelope at all? There is 
a version of this stabilizer without the envelope. Just four tubes packed 
into a single base: http://www.radiomuseum.org/tubes/tube_zz1031.html

Marcin

On 16-Mar-16 14:47, JohnK wrote:

OK... so why a getter in this one?  All the little NEON tubes are each
already sealed.
http://www.tubecollector.org/zz1030.htm
John K

- Original Message -
*From:* Instrument Resources of America 

*To:* neonixie-l@googlegroups.com 


*Sent:* Wednesday, March 16, 2016 8:18 AM
*Subject:* Re: [neonixie-l] Used or NOS?

As I mentioned in an earlier post today getters are flashed inside
of 'VACUUM TUBES' to absorb residual 'OXYGEN' after pump down, and
possibly some external R.F. heating of the internal elements to
further degas.  OXYGEN is extremely detrimental to 'hot cathodes',
and 'hot filaments', and will destroy both quite quickly, even in
small quantities.  Ira.





On 3/15/2016 10:23 AM, Nick wrote:

Why would they have a getter? An Hg pill that needs to be
vaporized, sure. But a getter? They are used to remove any stray
gas molecules given off by the glass or internal structures due to
heat & time.

Nixies are gassed tubes by definition - a getter would be
counter-productive - even during baking and initial evacuation
prior to backfilling, you wouldn't use a getter.

Nick


On Monday, 14 March 2016 01:15:28 UTC, jrehwin wrote:


Nixies are not vacuum tubes - they shouldn't have a getter.


Actually, some nixies do have a getter, but it's a different
kind of getter than vacuum tubes use, naturally.  Most of the
ones with getters use "pill" getters, often on the back of the
anode, and there's normally no "getter flash" on the glass.


http://www.tubeclockdb.com/images/stories/2012/in-18-bd/in-18-nixie-clock-6.jpg



- John

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Re: [neonixie-l] Used or NOS?

[Marcin Adamski]

Have no answer, except that if they wanted to have a good vacuum why not 
to use getter. But why do they needed the vacuum envelope at all? There 
is a version of this stabilizer without the envelope. Just four tubes 
packed into a single base: http://www.radiomuseum.org/tubes/tube_zz1031.html

Marcin

On 16-Mar-16 14:47, JohnK wrote:

OK... so why a getter in this one?  All the little NEON tubes are each
already sealed.
http://www.tubecollector.org/zz1030.htm
John K

- Original Message -
*From:* Instrument Resources of America 
*To:* neonixie-l@googlegroups.com 
*Sent:* Wednesday, March 16, 2016 8:18 AM
*Subject:* Re: [neonixie-l] Used or NOS?

As I mentioned in an earlier post today getters are flashed inside
of 'VACUUM TUBES' to absorb residual 'OXYGEN' after pump down, and
possibly some external R.F. heating of the internal elements to
further degas.  OXYGEN is extremely detrimental to 'hot cathodes',
and 'hot filaments', and will destroy both quite quickly, even in
small quantities.  Ira.





On 3/15/2016 10:23 AM, Nick wrote:

Why would they have a getter? An Hg pill that needs to be
vaporized, sure. But a getter? They are used to remove any stray
gas molecules given off by the glass or internal structures due to
heat & time.

Nixies are gassed tubes by definition - a getter would be
counter-productive - even during baking and initial evacuation
prior to backfilling, you wouldn't use a getter.

Nick


On Monday, 14 March 2016 01:15:28 UTC, jrehwin wrote:


Nixies are not vacuum tubes - they shouldn't have a getter.


Actually, some nixies do have a getter, but it's a different
kind of getter than vacuum tubes use, naturally.  Most of the
ones with getters use "pill" getters, often on the back of the
anode, and there's normally no "getter flash" on the glass.


http://www.tubeclockdb.com/images/stories/2012/in-18-bd/in-18-nixie-clock-6.jpg



- John

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Re: [neonixie-l] Used or NOS?

[JohnK]

OK... so why a getter in this one?  All the little NEON tubes are each already 
sealed.
http://www.tubecollector.org/zz1030.htm

John K
  - Original Message - 
  From: Instrument Resources of America 
  To: neonixie-l@googlegroups.com 
  Sent: Wednesday, March 16, 2016 8:18 AM
  Subject: Re: [neonixie-l] Used or NOS?


  As I mentioned in an earlier post today getters are flashed inside of 'VACUUM 
TUBES' to absorb residual 'OXYGEN' after pump down, and possibly some external 
R.F. heating of the internal elements to further degas.  OXYGEN is extremely 
detrimental to 'hot cathodes', and 'hot filaments', and will destroy both quite 
quickly, even in small quantities.  Ira.






  On 3/15/2016 10:23 AM, Nick wrote:

Why would they have a getter? An Hg pill that needs to be vaporized, sure. 
But a getter? They are used to remove any stray gas molecules given off by the 
glass or internal structures due to heat & time. 


Nixies are gassed tubes by definition - a getter would be 
counter-productive - even during baking and initial evacuation prior to 
backfilling, you wouldn't use a getter.


Nick


On Monday, 14 March 2016 01:15:28 UTC, jrehwin wrote: 
Nixies are not vacuum tubes - they shouldn't have a getter.



  Actually, some nixies do have a getter, but it's a different kind of 
getter than vacuum tubes use, naturally.  Most of the ones with getters use 
"pill" getters, often on the back of the anode, and there's normally no "getter 
flash" on the glass.


  
http://www.tubeclockdb.com/images/stories/2012/in-18-bd/in-18-nixie-clock-6.jpg


  - John


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Re: [neonixie-l] Russian EG-5 (ЕГ-5) prototype dekatron manufactured in 1959 up and running.

[Marcin Adamski]

Great find! Looks like long-lost child of OG-3 and A-201. Where on the 
Earth are you finding all those awesome and unusual tubes?

Marcin

BTW, we have a proof of the universal quality of the True Technology! If 
we stayed with the hot-rod-in-the-vacum light there would be no 
flickering. All those fluorescent tubes, cfls, leds... smoke and mirrors 
they are. Neons are excused, they are supposed to flicker. ;)


On 16-Mar-16 08:16, Dekatron42 wrote:

Hi,

I got hold of this nice Russian EG-5 (ЕГ-5) prototype dekatron and after
having peered down the glass envelope and hooked it up as a normal GC10B
it started to run without a hitch, I made a short video:

https://www.youtube.com/watch?v=WNNQio0N1FQ

Unfortunately my new LED lamps flicker and since my tester uses the
mains frequency to run it looks like some cathodes and guides are not
lit, but that is just an effect of the flicker and the camera not
handling that.

/Martin


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Re: [neonixie-l] Why were dekatrons still manufactured as recently as 1992 ?

[Marcin Adamski]

Well, B-52 Stratofortress are early fifties design. In service at lest 
up till 2050. ;)
The Russian dekatrons: My guess is they were made as spares for the 
forces. I believe US was/is doing the same. Not to mention that the 
vacuum technology is so much more immune to nuclear attack (or so I was 
told, never verified it myself).

Marcin

On 16-Mar-16 08:47, gregebert wrote:

I bought a few spare A-101's and at least one had a 1992 manufacturing date.

So I'm wondering what could the former Soviet Union have needed with
such old technology in the 1990's ? I would have expected that they
would have replaced all their dekatron equipment by then, so even spare
tubes should not have been needed. Or, am I entirely wrong and they
continued to use 1950's era technology for another 30-40 years ?

Or perhaps was there rampant waste & excess that old factories kept
churning-out obsolete devices, only to store them in warehouses, just to
keep workers employed ?

Too bad the soviets didn't make tons of CD47's


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Re: [neonixie-l] Used or NOS?

[Instrument Resources of America]

As I mentioned in an earlier post today getters are flashed inside of 
'VACUUM TUBES' to absorb residual 'OXYGEN' after pump down, and possibly 
some external R.F. heating of the internal elements to further degas.  
OXYGEN is extremely detrimental to 'hot cathodes', and 'hot filaments', 
and will destroy both quite quickly, even in small quantities.  Ira.






On 3/15/2016 10:23 AM, Nick wrote:
Why would they have a getter? An Hg pill that needs to be vaporized, 
sure. But a getter? They are used to remove any stray gas molecules 
given off by the glass or internal structures due to heat & time.


Nixies are gassed tubes by definition - a getter would be 
counter-productive - even during baking and initial evacuation prior 
to backfilling, you wouldn't use a getter.


Nick


On Monday, 14 March 2016 01:15:28 UTC, jrehwin wrote:


Nixies are not vacuum tubes - they shouldn't have a getter.


Actually, some nixies do have a getter, but it's a different kind
of getter than vacuum tubes use, naturally.  Most of the ones with
getters use "pill" getters, often on the back of the anode, and
there's normally no "getter flash" on the glass.


http://www.tubeclockdb.com/images/stories/2012/in-18-bd/in-18-nixie-clock-6.jpg



- John

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<>

Re: [neonixie-l] Used or NOS?

[Instrument Resources of America]

As I understand it, a getter's primary purpose, within a 'VACUUM TUBE' 
is to absorb an remaining 'OXYGEN' from within the envelope. Ira.




On 3/15/2016 10:45 AM, Dekatron42 wrote:
Dekatrons use a getter that is flashed and they contain similar gas 
mixtures compared with Nixies, as I understand it the getter is there 
to absorb impurities from the materials used whereas the mercury is 
there to extend the life of the Nixie as it reduces the sputtering.


/Martin

On Tuesday, 15 March 2016 18:23:42 UTC+1, Nick wrote:

Why would they have a getter? An Hg pill that needs to be
vaporized, sure. But a getter? They are used to remove any stray
gas molecules given off by the glass or internal structures due to
heat & time.

Nixies are gassed tubes by definition - a getter would be
counter-productive - even during baking and initial evacuation
prior to backfilling, you wouldn't use a getter.

Nick


On Monday, 14 March 2016 01:15:28 UTC, jrehwin wrote:


Nixies are not vacuum tubes - they shouldn't have a getter.


Actually, some nixies do have a getter, but it's a different
kind of getter than vacuum tubes use, naturally.  Most of the
ones with getters use "pill" getters, often on the back of the
anode, and there's normally no "getter flash" on the glass.


http://www.tubeclockdb.com/images/stories/2012/in-18-bd/in-18-nixie-clock-6.jpg



- John

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<>

[neonixie-l] Why were dekatrons still manufactured as recently as 1992 ?

[gregebert]

I bought a few spare A-101's and at least one had a 1992 manufacturing date.

So I'm wondering what could the former Soviet Union have needed with such 
old technology in the 1990's ? I would have expected that they would have 
replaced all their dekatron equipment by then, so even spare tubes should 
not have been needed. Or, am I entirely wrong and they continued to use 
1950's era technology for another 30-40 years ?

Or perhaps was there rampant waste & excess that old factories kept 
churning-out obsolete devices, only to store them in warehouses, just to 
keep workers employed ?

Too bad the soviets didn't make tons of CD47's

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[neonixie-l] Russian EG-5 (ЕГ-5) prototype dekatron manufactured in 1959 up and running.

[Dekatron42]

Hi,

I got hold of this nice Russian EG-5 (ЕГ-5) prototype dekatron and after 
having peered down the glass envelope and hooked it up as a normal GC10B it 
started to run without a hitch, I made a short video:

https://www.youtube.com/watch?v=WNNQio0N1FQ

Unfortunately my new LED lamps flicker and since my tester uses the mains 
frequency to run it looks like some cathodes and guides are not lit, but 
that is just an effect of the flicker and the camera not handling that.

/Martin


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Re: [neonixie-l] Used or NOS?

[Dekatron42]

Dekatrons use a getter that is flashed and they contain similar gas 
mixtures compared with Nixies, as I understand it the getter is there to 
absorb impurities from the materials used whereas the mercury is there to 
extend the life of the Nixie as it reduces the sputtering.

/Martin

On Tuesday, 15 March 2016 18:23:42 UTC+1, Nick wrote:
>
> Why would they have a getter? An Hg pill that needs to be vaporized, sure. 
> But a getter? They are used to remove any stray gas molecules given off by 
> the glass or internal structures due to heat & time.
>
> Nixies are gassed tubes by definition - a getter would be 
> counter-productive - even during baking and initial evacuation prior to 
> backfilling, you wouldn't use a getter.
>
> Nick
>
>
> On Monday, 14 March 2016 01:15:28 UTC, jrehwin wrote:
>>
>> Nixies are not vacuum tubes - they shouldn't have a getter.
>>
>>
>> Actually, some nixies do have a getter, but it's a different kind of 
>> getter than vacuum tubes use, naturally.  Most of the ones with getters use 
>> "pill" getters, often on the back of the anode, and there's normally no 
>> "getter flash" on the glass.
>>
>>
>> http://www.tubeclockdb.com/images/stories/2012/in-18-bd/in-18-nixie-clock-6.jpg
>>
>> - John
>>
>>

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Re: [neonixie-l] Used or NOS?

[jb-electronics]

I don't think it would be counter-productive, see e.g. the XN-1. Neon 
and argon are noble gases and hence they almost don't interact with 
getter material, as far as I know.


Jens

On 3/15/2016 1:23 PM, Nick wrote:
Why would they have a getter? An Hg pill that needs to be vaporized, 
sure. But a getter? They are used to remove any stray gas molecules 
given off by the glass or internal structures due to heat & time.


Nixies are gassed tubes by definition - a getter would be 
counter-productive - even during baking and initial evacuation prior 
to backfilling, you wouldn't use a getter.


Nick


On Monday, 14 March 2016 01:15:28 UTC, jrehwin wrote:


Nixies are not vacuum tubes - they shouldn't have a getter.


Actually, some nixies do have a getter, but it's a different kind
of getter than vacuum tubes use, naturally.  Most of the ones with
getters use "pill" getters, often on the back of the anode, and
there's normally no "getter flash" on the glass.


http://www.tubeclockdb.com/images/stories/2012/in-18-bd/in-18-nixie-clock-6.jpg



- John

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Re: [neonixie-l] Used or NOS?

[Nick]

Why would they have a getter? An Hg pill that needs to be vaporized, sure. 
But a getter? They are used to remove any stray gas molecules given off by 
the glass or internal structures due to heat & time.

Nixies are gassed tubes by definition - a getter would be 
counter-productive - even during baking and initial evacuation prior to 
backfilling, you wouldn't use a getter.

Nick


On Monday, 14 March 2016 01:15:28 UTC, jrehwin wrote:
>
> Nixies are not vacuum tubes - they shouldn't have a getter.
>
>
> Actually, some nixies do have a getter, but it's a different kind of 
> getter than vacuum tubes use, naturally.  Most of the ones with getters use 
> "pill" getters, often on the back of the anode, and there's normally no 
> "getter flash" on the glass.
>
>
> http://www.tubeclockdb.com/images/stories/2012/in-18-bd/in-18-nixie-clock-6.jpg
>
> - John
>
>

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