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Monster Soviet Vacuum Florescent Display Tubes!!!!!

🕑 Added 2021-06-07 23:26:18 +0000 UTC

Comments

Jessica McIntosh

Those are really neat, even if they don’t work. 😀

Mike O'Dell

I think your assessment is correct: lousy QC in the fab. If there are indeed “warehouses” of them in Ukraine, maybe you can build them a tester that can use with minimum skillz to sort them into the equivalent of “speed bins” (good, decent, lame, destroy) and thereby make the rest of them more valuable. Take your payment in the best tubes and resell them as FRANVIEW or FRANVFD or MOBYVISION ( if you like MIT-speak).

Down the (you)tubes it goes...

Jim

As a consumer of glass and metal ceramic RF tubes produced in the USSR, I can say that QC was deteriorating rapidly in the early 90’s. 😞

John McCormick

Those would make a very awkward wrist watch.

Back into electronics. Frantastic! 🍿🍿

Hey Fran...keep up the great work ! You make electronics so interesting when I thought I was burnt out !

Did you check the voltage as it was running? Also, maybe the grid needs a higher freq?

What about trying bleeder resistors on the tubes that work. They would bleed off any residual charge when the transistor is off.

Mamma Mia Fran! Those are the coolest ever VFD's I've ever seen. The only thing cooler would be if they're blue.

David Blake

What a shame the displays don't work reliably. They would have made an awesome clock. Thanks for sharing your work with us Fran and better luck next time.