Finally...

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Nicholas Stock

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Nov 25, 2019, 10:22:51 PM11/25/19
to 'Greg P' via neonixie-l

Dylan Distasio

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Nov 25, 2019, 10:25:03 PM11/25/19
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Very cool! 

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Alex

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Nov 26, 2019, 5:30:01 AM11/26/19
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That is very cool, and seems oddly over complex for what it does, compared to the more common similarly sizes Elektronika ones based on the 7 dot VFD tubes...

Seems wasteful to have a full matrix but only show digits on part of it - what are those displays called, does anyone know? I have only seen the smaller types with the two colour elements in them?

- Alex

HuggerMugger

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Nov 26, 2019, 7:46:10 AM11/26/19
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When was working in USSR back in 1989/90 I remember those clocks as they were everywhere. All over the work plants and even in restaurants, hotel lobbys etc.
Guess a lot simply “disapperaed” during the chaotic years that followed.
 
/Magnus

Kevin A.

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Nov 26, 2019, 8:15:38 AM11/26/19
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"Oddly overcomplex for what it does"

Yup, it's definitely Soviet. 

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Nicholas Stock

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Nov 26, 2019, 5:56:44 PM11/26/19
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Bless 'em for it....our hobby would be less interesting for sure...

I have some of the bare-board 'nixie' versions of these ...


No idea how to drive them yet....any one played with one of these?

Nick

gregebert

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Nov 26, 2019, 6:41:27 PM11/26/19
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Looks like 64x64  matrix, probably 64 anode-connections on 1 side and 64 cathode connections on the other. I would expect a lot of flicker with 64:1 multiplexing at 1Khz; that's basically 16Hz flicker-rate.
Even the 128x32 dot-matrix displays used on pinball machines have annoying flicker in my opinion. So, scan-in 64 cathode values, turn-on anode #1, turn-off scan -in next 64 cathode values, turn-on anode #2, etc.

Alternating green and orange suggests there is phosphor, rather than gas, to set the color. That would be another wearout mechanism in-addition to sputtering and gas-leaks.

I have to say, the Soviets sure spent a lot of time developing high-voltage display technologies, and seemed to lag developing LCD which was already outpacing LED in many US applications by 1980.

Tyler Bourne

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Dec 2, 2019, 4:54:59 PM12/2/19
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There is a good project on Hackaday about driving these displays.  I have one and will probably give it a shot sometime.

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