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What devices should i look for to get a -30V power supply. (lemmy.ml)

submitted 4 months ago by [email protected] to c/[email protected]

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I've got a VFD display on board along with UPD16311 driver is made for negative voltage around -30V and i think so is display (i couldn't find any info on display) and I'm doing it mostly from junk parts. I want to know what devices could/should contain power supply for such voltage. I've tried -12V from psu i've got lying around but it didn't work. There's also a chance that display itself is damaged but there's no visual sign of it.

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[–] [email protected] 12 points 4 months ago

You just need to be careful that the supplies' outputs are completely isolated from mains. Otherwise you'll end up with a lovely spark show.