I would tend to agree with the thought that using 12V means it has to work less though it seems the various spikes that can come from a 12V wall wart can sometimes be all too much - hence the cap (as well as optional TVS etc as Jeff suggested).
I use the Microchip HV5XXX drivers like HV5522 etc which demand a 12V supply and logic levels (Absolutely NOT my intention to start that particular discussion regarding using them at lower logic levels!). I cant really comment on the protection of the output - my suggestions are based purely on the recommendation of the original designer. It is a fact that I have never experienced any issue when using them with a 5V supply and I guess I could pick up the 5V rail from the 5V buck converter that I already have installed but to go from 12V to 5V just to get back to 170V seems somewhat counter intuitive. - RIchard On Monday, 16 February 2026 at 13:23:42 UTC newxito wrote: > Having to add a 470uF electrolytic somewhat defeats the purpose of such a > small power supply. I only used this PSU once for a flat clock base and > it's working perfectly so far. I used 4 x 47uF MLCCs in parallel to keep > the hole thing flat. > -- 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, visit https://groups.google.com/d/msgid/neonixie-l/0d6be807-ee07-46b8-b31f-005dd935d06en%40googlegroups.com.
