Elesta EZ10 Dekatron Nomotron Tube  
Written by AnubisTTP on 2009-01-26  



Nomotrons are strange devices. However, even among the world of nomotrons, the EZ10 is unique. With its tiny miniature envelope and 50kHz counting speed, the EZ10 is the the smallest, fastest nomotron currently known. Like the more readily available EZ10A and EZ10B, the EZ10 has 20 shaped cathodes, an argon fill gas, and a tiny 13 pin base. The pinouts of the EZ10 are somewhat different than the more common EZ10A; the guide cathodes are tied into even and odd groups instead of left and right groups, which prevents the tube from operating in a base-5 configuration. Unlike other nomotrons, the tiny mask plate at the top of the tube does not have any number markings. Another unusual feature is that the mask plate in the EZ10 does not extend down to cover the tube's internal structure, which allows the cathode and guide structures to be easily seen through the side of the tube.


Elesta EZ10 Dekatron Tube
Elesta EZ10 miniature envelope nomotron.

Elesta EZ10 Nomotron Display
A nomotron is differentiated from a dekatron by the presence of a cathode masking plate to indicate count position.

Elesta EZ10 Nomotron Tube
The glow position is visible through holes in the top of the plate.

Elesta EZ10 Dekatron Counting Tube
Sometimes the tubes get rowdy when no-one is watching.

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