+1 for the HV5530 I have a 14-tube clock with IN-18's driven by six HV5530's, and have had no issues other than some mild cathode poisoning (my fault) which is easily cured. I strongly recommend using a level-translator IC when controlling the HV5530 from 3.3/5.0 VDC controllers; others have had success with the translator.
The reason for the cathode-poisoning is simple: several tubes display static values, such as the year. The de-poisoning routine runs nightly from 11PM till midnite, then the clock shuts off until someone presses the wakeup button in the morning. Then it runs all day. Since it's FPGA code, I have to tear it down to reprogram it. Someday it will have a RasPi in it. -- 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/3f9c6213-df08-4e89-9bbd-eff08104d589%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
