What to do with a 0B3 regulator tube ?

[greg...@hotmail.com]

I acquired a few of these for free (not a bad price), and their faint purplish glow doesn't produce much of a "wow" factor to show-off. I was hoping that reverse-polarity would produce more glow; no such luck. Most of the interesting glowing is hidden inside the  metallic area of the tube. Even with higher current, the glow was barely affected. It's so dim that it wouldn't even make a decent night-light.

Any ideas out there ?

Since these aren't rare tubes (yet...), I'm tempted to repeat an experiment I did in high school with a 0A2 regulator tube: I cranked so much current thru it that the plate glowed red-hot, the glass softened and due to the vacuum, and it shrank around the metal. Watching the poor tube shrivel-up and die made me laugh so hard I cried.

[Instrument Resources of America]

I did the same with a neon lamp once. It glowed really
bright,,,,,,,,,,,,, for a short while. Ira

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[John Smith]

Try some 866 high voltage rectifier tubes...more yummy purple glow....

[Instrument Resources of America]

If you'd like other colors you can have white with Xenon filled tubes, and also orange and green with some of the other gas regulator tubes.   Ira.

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[Dalibor Farný]

What kind of gas produces green colour?

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Dalibor Farny
www.daliborfarny.com

Dne 10.1.2014 17:41 "Instrument Resources of America" <IRACO...@hughes.net> napsal(a):

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[John Smith]

Most likely Krypton gas...usually the glass is stained to enhance the green color.

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[Instrument Resources of America]

Well Dalibor, now you have me wondering. Last time I actually worked with any VR tubes was years ago, and I swear that one of them had a greenish color to it. It may have been due to a 'mix" of more than one gas. I'm going to fire up some of the VR tubes that I have and see if I do remember correctly or not. Stay tuned for more.    Ira.

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[Dalibor Farný]

Hi, from what I saw on internet, the krypton is more white-blue
colour.. The green colour gas is something what I would really like to
try in nixies, especially if it is inert gas.. There are some photos
of discharge in krypton, but who knows how accurate the photo is:
http://www.periodictable.ru/036Kr/Kr_en.html

Dalibor

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[greg...@hotmail.com]

If you want green, I suggest green glass and Xenon gas (numerous spectral lines in the green region), and perhaps a bit of Helium. I would avoid Neon because it's mostly yellow/orange/red spectra.

[John Smith]

The really small neon bulbs are sometimes stained to add color.  On neon signage sometimes gas mixes are used and also various metal halides are mixed with the gasses.  The large high voltage vacuum tube rectifiers usually have mercury when ionized neutralizes the space charge.  The voltage regulator tube have neon and argon mostly.

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[Tidak Ada]

According to Wiki, Krypton should emit a violetish colour. I guess also UV. So maybe you have seen a krypton discharge lamp with an Uranium glass mantle. The green colour will be due to fluorescence evoked by  the UV-light that excites the uranium atoms to send off green light.

 

@Dalibor:

Beware of uranium glass it is extreme expensive, however, may be in your country it might still be made (Bohemia?).

 

eric

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[Instrument Resources of America]

Well I'm back from checking the following VR tubes in my Hickok, 0A3, 0B3, 0C3, 0D3, and their seven pin miniature equivalents, which in reality I probably didn't need to check. NO green ones. I swear that I remember a green colored VR tube, maybe not at this point. It's heck gettin old, definitely not for sissies. LOL.  And,,,,,,NO,,,, I'm NOT confusing it with the green wilamite in shadow eye tubes, (aka electron ray indicators).  Anyone out there remember a greenish colored VR tube, or am I losing it?     Ira.

On 1/10/2014 9:29 AM, Dalibor Farný wrote:

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[Charles MacDonald]

On 14-01-10 07:08 PM, Instrument Resources of America wrote:
> I swear that I
> remember a green colored VR tube, maybe not at this point. It's heck
> gettin old, definitely not for sissies. LOL. And,,,,,,NO,,,, I'm NOT
> confusing it with the green wilamite in shadow eye tubes, (aka electron
> ray indicators). Anyone out there remember a greenish colored VR tube,
> or am I losing it? Ira.
>

Different makers probably used different gas mixtures to make their VR
tubes. Neon and argon together produce a range of colours depending on
the proportions.

http://en.wikipedia.org/wiki/Gas-discharge_lamp claims that Krypton
will give a green glow.

--
Charles MacDonald Stittsville Ontario
cm...@zeusprune.ca Just Beyond the Fringe
http://Charles.MacDonald.org/tubes
No Microsoft Products were used in sending this e-mail.

[John Smith]

This is getting interesting...never have seen a pure green ionized gas.  There is a possibility it may have been a hybrid gas mixture.  Since Helium produces a pale yellow and mercury will produce a blue color...possibly it was a mixture of a few types of gases.  Also some ionized gas will produce different colors at different energy (voltage ) levels.  Pressure also enters the equation. As far as any commercial vacuum tube regulators I have yet to see a pure green color.

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[John Smith]

I have seen thyratrons glow with a greenish tint though: https://www.youtube.com/watch?v=ZCR-1ELTjaw

[NeonJohn]

On 01/10/2014 08:01 PM, John Smith wrote:
> This is getting interesting...never have seen a pure green ionized gas.
> There is a possibility it may have been a hybrid gas mixture. Since Helium
> produces a pale yellow and mercury will produce a blue color...possibly it
> was a mixture of a few types of gases. Also some ionized gas will produce
> different colors at different energy (voltage ) levels. Pressure also
> enters the equation. As far as any commercial vacuum tube regulators I have
> yet to see a pure green color.

What we neonists would give for a pure green gas! Unfortunately there
isn't one. Krypton does a rather boring greenish tinged dull white.
Neon has an excitation state that decays with a green photon but it's
very hard to get it that excited without laser light. Copper ion lasers
do a beautiful green plasma but that's not something that could be used
for display purposes.

Unfortunately for the color green, it's either colored glass or phosphor.

John


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[Instrument Resources of America]

Or I hate to mention LED's LOL Ira.

[Instrument Resources of America]

Green filters????? Ira

On 1/10/2014 5:14 PM, NeonJohn wrote:
>

[threeneurons]

You mean these ?

If it was April 1st, I'd keep you guessing. Just some fun with Photoshop.

[astroschmidt]

Hi Dailbor,

here in Germany we do have an electronis distribur who sells two kinds of "green" glow lamps:

http://www.reichelt.de/Lamps-Signal/RAFI-137-1002/3/index.html?&ACTION=3&LA=446&ARTICLE=110919&GROUPID=3055&artnr=RAFI+137.1002&SEARCH=glimmlampe

and

http://www.reichelt.de/Lamps-Glow/L-2113/3/index.html?&ACTION=3&LA=446&ARTICLE=46088&GROUPID=3053&artnr=L+2113&SEARCH=glimmlampe

I once bought one of each.
The first one must be a normal neon glow lamp inside a green coloured plastic cover.
I use this one as an indicator in a variac and one can see the strong orange glow through the green plastic.

The second one I haver somewhere lying around.
You can see that it is advertised as green-glowing when you click the tab "Technical Details".
The photo is not always the one of the real product because Reichelt mostly uses the same photo for a whole group of products.
I do remember that it produced a more pure green glow.
I will try to find it, firing it up and then report.

Kind regards

Roger

[astroschmidt]

[John Rehwinkel]

> Well I'm back from checking the following VR tubes in my Hickok, 0A3, 0B3, 0C3, 0D3, and their seven pin miniature equivalents, which in reality I probably didn't need to check. NO green ones. I swear that I remember a green colored VR tube, maybe not at this point. It's heck gettin old, definitely not for sissies. LOL. And,,,,,,NO,,,, I'm NOT confusing it with the green wilamite in shadow eye tubes, (aka electron ray indicators). Anyone out there remember a greenish colored VR tube, or am I losing it? Ira.

I've seen 'em too. Not a pure green glow, but on one of the kind of tubes that the cathode is a rod with a squarish hunk of something attached to it (what is that?), the glow was a whitish purple with a distinctly green area near the cathode. I'm guessing maybe a little barium getter got deposited on the cathode and a little got vaporized?

- John

[Instrument Resources of America]

Well John, I'm glad that you remember it as well. For a while there I
thought that I was totally loosing a grip on reality. LOL. Ira.