IV-4 VFD tubes

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Posted on 1294464549|%A: %d %B, %Y|agohover

Here are couple of IV-4 tubes doing a little demo. They are controlled (so far) by 2 CD4504 level shifters, driven by an atmega8. Duty cycle for each tube is 50%. +18V for the grid/segments is supplied by the usual boost converter circuit.

I have more in mind for these tubes, and will be back with an update.

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