OpenVFD

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Hi, first of all - very good work.:) Keep going. Could You please share an oscilloscope output view. I assume how it should look like, but even with trigger It...

QwiateQ

The AD712 comparator requires differential input voltage. https://www.analog.com/media/en/technical-documentation/data-sheets/ad712.pdf I replaced with LM358N but the IGBT bridge goes into short circuit immediately after the start. http://www.ti.com/lit/ds/symlink/lm158-n.pdf

dexterbot80

Inappropriate transistors

4

Hi! according to Block Diagram.png you are using IRF512 transistors, but i've checked datasheet and these came in 100V maximum rating. I guess that commercial VFDs use IGBT transistors... Don't...

Harvie

can you share a working circuit for VFD along with arduino?

10

i am really interested in your project thanks

amrithmmh