Thanks! I don't think that many prototypes like this one is left in the wild, so it would be nice if anyone had a schematics diagram of the calculator part or datasheets on the ic's used.
Since the voltages rise well beyond 2-3 times the rated voltages I think the poor design of the power supply here is to blame, I could measure peaks of 580V on the 200V line for the Nixie supply at switch-off, that meant that the negative voltages for the ic's were similarly too high at almost -100V for the -35V line. They should have put some kind of over voltage protection in the switching power supply to have protected against that I think. I'll piece it together and put it on a shelf for the future, maybe I'll find one more! /Martin -- 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/0f767bd9-98d0-4355-b3c3-c17669b23316%40googlegroups.com.
