Hi all, looking for insight in to PSU problems. Have had two NCH8200s fail very close together after only a few weeks of use.
In December, I finally got round to building four IN-12 4 tube clocks using a new PCB and some leftover tubes and drivers. They are driven using a K155ID1 for each tube (no multiplexing) and MJE340 for the INS-1 colons. Current limiting resistor is 18K. Each tube anode has a PC851 optocoupler to turn the tube off if no presence is detected. My previous IN-12, IN-14 & IN-18 clocks use the 8200 or 6300 and are still going strong. They are driven using HV5530s. Both 8200s have gone full short across the input. Anything about the K155ID1 / PC851 that is harsher on a HV supply? Anything I can check for with a scope? Thanks -- 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/a93fbd9d-36aa-4791-bffa-54f7d2514cdfn%40googlegroups.com.
