Monster Soviet Vacuum Florescent Display Tubes!!!!!

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

Jessica McIntosh

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).

Mike O'Dell

Down the (you)tubes it goes...

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. 😞

Jim

Those would make a very awkward wrist watch.

John McCormick

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.

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.

David Blake

Played OK for me. Them be ginormous tubes, maybe thats what breaking the you tubes?

Anita Davis

Works now.

Peter Knazko

Yup, same here...

Matt Wietlispach

Same here. "Browser can't play this video" And good luck with the "learn more" button! oh, well..

D. Stuart

Opening slide only. Full sound though.

Joseph Retzer

Same here. Firefox.

yea it is saying my browser cant play the vid

William

Now the app on my TV shows an error

Yeah, I get the same

David Peaker

On YouTube the video is stuck in the opening slide...