Russian IV-18 vacuum fluorescent display clock
These vintage tubes are still available in reasonable quantities and at not too outrageous prices on ebay.
VFDs need a voltage of around 40-50 volts to light the multiplexed display. Only one number is lit any time, thus each is only on for an eighth of the time. They also need a filament voltage which ideally should be AC to get even illumination across the tube. Nice, bright, large, digits and I think very attractive.
Hard to photograph due to the rapidly flashing display – too fast for the human eye but not the camera.
I made up a small board that mounted behind the tube and made a curved case, inspired by some of the simple industrial design Dieter Rams undertook for Braun.
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Nice clock, well done.
Could you please send me a link from where i can buy this case?
I also make an IV-18 project an need an good case, so i´d like to build the clock in the same case, you have chosen.
Greets from Germany,
The case was hand made from a section of plastic tube, acrylic sheet and polyester filler, sanded and sprayed. Sorry there is nowhere you can buy this.