The scrolling date and temperature, if you have them enabled, effectively function as an anti-poisoning routine on the Nixichron. I received mine in October 2011, installed some 9102 date-code nixies and it’s run 24x7 ever since, except for the odd power failure, with no signs of poisoning at all. Other than the scrolling date and temperature, mine only dims from 21:00-07:00 but I can’t remember what my wake and sleep brightness are set to.
Cheers, Scott. From: 'Terry S' via neonixie-l [mailto:neonixie-l@googlegroups.com] Sent: Tuesday, 30 May 2017 11:47 PM To: neonixie-l Subject: Re: [neonixie-l] Pulsed DC vs direct DC in cathode poisioned If the tubes show signs of poisoning within hours, something is seriously wrong with the tubes, not the clock. I have a Nixichron that ran for many years, and some of the tubes started to show poisoning symptoms very gradually over time. Jeff sent me info on a hardware update, as well as advice on how to de-poison the tubes. It took a tad of rework and a few hours total time. The rework lowered the anode resistor value and raised the high voltage, so the tubes ran a little "hotter", but the poisoning has not returned at all. And I completed that rework at least five years ago. The clock is running strong and I expect it will for many more years. I run it 7 hours/day, and not at full brightness. I did have one tube fail... what looked like poisoning was in reality a slow gas leak. Probably a result of my removing the tubes from rigid sockets. The Nixichron has no anti-poisoning routine. I've run across numerous clocks that do, but some don't up the brightness to max during the routine. So I find that of questionable value. Others do up the brightness... don't put those clocks in your bedroom. Terry On Tuesday, May 30, 2017 at 7:38:34 AM UTC-5, Luka C wrote: @Ira, I think he already mentioned that he does not own a scope. If we knew the model of the clock, maybe there would be someone who knows such data from the firmware of the clock. Btw, if the tubes are NOS and have been running since January 2017, then there is something seriously wrong with the mentioned clock? Does it have anti-cathode poisoning routines activated and how often? -- 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 neonixie-l+unsubscr...@googlegroups.com. To post to this group, send email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/a2daa453-783b-443e-b908-8812724d541b%40googlegroups.com <https://groups.google.com/d/msgid/neonixie-l/a2daa453-783b-443e-b908-8812724d541b%40googlegroups.com?utm_medium=email&utm_source=footer> . For more options, visit https://groups.google.com/d/optout. -- 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 neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/0a0e01d2da1a%2444dfacc0%24ce9f0640%24%40gmail.com. For more options, visit https://groups.google.com/d/optout.
