i checked the polarity multiple times, but just for trying I switched it around, but then the tube would not ignite at all. so I am quite sure it is correct.
Am Samstag, 23. Mai 2015 20:29:31 UTC+2 schrieb threeneurons: > > Not to sound condescending, but did you check the polarity. > > I find as I get older, I hook things up incorrectly, more often. In my > youth (35 and under), I could wire-wrap a 30+ IC board. It would take 2 > days to wire it up, and another day and a half, to do a continuity check > against the schematic. Maybe, I'd make as many as 3 mistakes. I'd make that > many mistakes today, on a circuit a tenth as complex ! > > On Saturday, May 23, 2015 at 2:49:55 AM UTC-7, Thomas Kunzfeld wrote: >> >> >> hi guys, >> >> I recently bought a bunch of different nixie tubes and as my very first >> project I designed a simple >> thermometer with an in-9. at first the problem was that the bar was only >> about 3 cm long, >> even at more than the highest rated current. I read somewhere that those >> tubes sometimes need >> some sort of "burn in" phase, so i ran them at about 18 mA for half an >> hour. after that, the bar was >> about 8 cm long. However, after not running for two days, the bar length >> dropped again by about >> 1 cm. >> >> i use a switching power supply at about 130 V. >> >> is there some way to get around this problem? or do I have to run them >> continuously...? >> >> 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 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/f781b5b4-bca1-430c-9fc9-54d30599b19c%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
