A-106 Dekatron question

[Thomas Kummer]

I was wanting to make Threeneurons all tube variable speed Dekatron Spinner with the A-106 Russian Dekatron. However, looking over the schematic I see that it requires a Dekatron with two guides. Looking at Dieter’s Dekatron database I see that he has the A-106 listed as a bi-directional tube with two guides. I know that the A-106 Dekatron is a uni-directional tube due to the bent cathodes, but does it have one guide or two? I found a datasheet for it, but I don’t know any Russian, and when I tried to use google translate the only thing I got was anode, cathode, and not connected. I’ll attach the datasheet and the schematic.

[Jon]

Hi Thomas,

A106 is indeed a single guide, unidirectional tube. Pin 5 is the guide electrode (usually called the transfer electrode on single guide tubes). Like the OG8, but a selector rather than counter format.

Jon.