kodera2tStill I got a new "unknown" tubes for me.
The first one is klystron (more strictly, reflex klystron), an electron tube that generates or amplifies microwaves by velocity modulation.
I've known it only by text book, but have not got the real one. This time I got just around 500JPY. One mystery for me was "long electrode".
YES, it's semi semi-rigid cable. Originally it was connected to coaxial-waveguide transducer (just stick to rectangular waveguide with considering impedance matching.), but I will directly connect to female SMA later. The issue is voltage requirement. Oscillation requires 300V, 60V, and heater 6V... Hmmmmmmm.
The second one is, "dekatron". It is a counter device and can maintain its data during power-on.
Hmmmmmmmm tooooo much pins of 13. It is unique socket and it may be available but more expensive than the tube price (it is 300JPY).
To be continued...
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170V is a good news for me! I did (1) getting pdf datasheet, (2) Acrobat reader OCR in Russian mode, (3) OCRd character feeding google translator, and found the value of 400V. But it may be maximum rating...
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YES, right, but I may need to find some good connection socket for 13 pins..
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Dekatrons are cool! They combine both the counter and display in one device. I saw quite a few of them in lab equipment, e.g. frequency counters.
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Oh-ho! Indeed this is the first time for me to see this. I will try to drive, but socket issue and also voltage requirement... (more than 400V).
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My memory is that the voltage is similar to nixies, about 170V. Maybe you can 3D print a socket?
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