carneeki / OpenVFD

Variable Frequency Drive for ATmega328 based Arduinos
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Your proposed circuit is wrong, #3

Open dexterbot80 opened 5 years ago

dexterbot80 commented 5 years ago

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