IN-37 ???

[kay486]

What is this? Has anybody seen tube like this before? It looks very interesting! http://www.ebay.com/itm/1-x-UNIC-ULTRA-RARE-IN37-NIXIE-SHADOW-MASK-TUBE-DIGITS-IN37-USSR-/261333956957

[greg...@hotmail.com]

I've seen similar, with digits 0-9. I'm not sure why this unit is 1-6 because you could not even use it for a clock;

must have been a special application.

I've always wondered if anyone manufactured a dekatron (or in this case, a "hexatron" ) in this manner.

I doubt these were very popular because the digits are much smaller than a conventional nixie with the same footprint,

and they move around. Even nixies are a bit annoying as the numerals move forward and backward.

This just inspired me for another clock project (my wife is gonna kill me....): I will etch some metal disks and backlight them with NE-2's;

I think it would be sinful to use an LED......

[John Rehwinkel]

> I've seen similar, with digits 0-9. I'm not sure why this unit is 1-6 because you could not even use it for a clock;
> must have been a special application.

Hence the rarity and price, I assume.

> I doubt these were very popular because the digits are much smaller than a conventional nixie with the same footprint,
> and they move around. Even nixies are a bit annoying as the numerals move forward and backward.

Some of us here like the numerals moving forward and backward. :)

> This just inspired me for another clock project (my wife is gonna kill me....): I will etch some metal disks and backlight them with NE-2's;

Maybe use little neon thyratrons in a ring counter, then the indicators would be the counting elements as well.

> I think it would be sinful to use an LED......

Agreed. However, you've given me a truly awful idea - put the etched disc in front of a 3JP12 CRT, and steer the CRT spot around to
illuminate different digits. The P12 phosphor would give it a lovely orange glow.

- John

[kay486]

Yea, there are some pasive displays with numerals arranged like this, but all of them have all the decimal digits as you said. The thing is, that they do not count. I understand how it could be beneficial to close all the numbers in one envelope if you have 10 of them, but with only 6 you could have yoused setup like you explained.
There might be slight benefit, that the ignition voltages are loqer if the cathodes are together, not sure about that though.

[Gideon Wackers]

Yikes that is quite an amount of money for an odd tube, I do understand buying something because it is special but that sounds a bit over the top. 

[kay486]

Exactly, and i think that if you would want to buy it only for its unctionality, not for the historic value. Dalibor could make it chaper :)

[Dalibor Farný]

It is too small for me, I would not be able to make it ;-) Too delicate work ;-)

2013/11/19 kay486 <luck...@gmail.com>:

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Dalibor Farny
http://dalibor.farny.cz

[Christian Bjelle]

$250 for a pixie-tube seems a bit steep, doesn't it?

//c

19 nov 2013 kl. 16:52 skrev kay486 <luck...@gmail.com>:

What is this? Has anybody seen tube like this before? It looks very interesting! http://www.ebay.com/itm/1-x-UNIC-ULTRA-RARE-IN37-NIXIE-SHADOW-MASK-TUBE-DIGITS-IN37-USSR-/261333956957

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