On Friday, 17 July 2020 01:56:47 UTC+8, Paul Andrews wrote: > > What power supply are you using? I seem to collect power supply design > almost as much as Nixie tubes. > >
I'm planning to use an LM9022 based supply. Yes, it's out of production, but apparently it's the same as an LM4871. And yes, it's overkill for a single IV-17, but I plan to start here, then get one of those multi-digit tubes to play with. Having one PSU design will cut down on the work. Thanks for all the replies. I'd never thought about managing inrush current and burnout. I'm not sure it's possible to do with the LM9022, or at least not with my level of analog know how. But it occurs to me that the Vsupply for that chip is 2.0 to 5.5 V. I could use a resistor-divider-set LDO to supply the LM9022, and use a digital pot + small uC to do a "soft-start" by starting at a low voltage then ramping up. As a bonus, since I plan to have a uC in the clock anyway, I can tie the digital pot to that in my final design... -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/5bab3541-effd-44bc-a61a-2e7fd64eb5aco%40googlegroups.com.
