Hi, I have been experimenting a bit with single inductor supplies. I built one myself based on TPS40210, and tried a couple of others too.
Common for all, is that the inductor gets quite hot when running them on a 10K dummy load @180V. So, for 6 IN-14 tubes on 1.5 mA each, they work just fine, but not much more than that. I tried various inductors, with fairly high amp ratings: - shielded SMD ones have most pronounced. That is, I can hold my finger on it, but just barely. - radial THT, souch as Bourns RLB9012-101KL. When peeling off the outer coating, the heat is obvious - toroids with low ohms / high amps. These gives best result, but gets "luke warm". I'm thinking that having a supply like that inside a casing would not be good in the long run. I am aiming for non-multiplexed.. Not sure how to remedy this (snubber or similar ?), perhaps this topology isn't the most ideal. What's your experiences here ? -- 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 post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/721292b4-08f7-4026-99cc-5162a96cdb1c%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
