Thank you, I'm away right now but will get some temperature readings when I get back and compare.
- Richard On Monday, 17 July 2023 at 09:47:55 UTC+1 Benoit Tourret wrote: > Hello Richard, > I don't have any Minitron (yet?) so I had a look to my Numitron tubes. > My IV-9 clock was in the sunlight, I checked 47°C (on the center of a 0) > I put it in the shadow it goes down to 36°C > my Apollo DA-2000 Numitron is at same temperature 36°C, both in a 26°C > environment (up to now...) > the IV-9 is given for -60 / +100°C > the DA-2000 for -50 / +70°C > > Regards, > Benoit. > > Le lundi 17 juillet 2023 à 06:41:21 UTC+2, Richard Scales a écrit : > >> I have recently built a clock using FFD21 Numitrons / Minitrons/ The spec >> sheet says that the segment current should be 15mA +/- 2mA - I have >> measured it at 14.7mA so that should be fine. >> >> I note that after 10 minutes of operation, the displays are warm to the >> touch. >> >> Now then, I know these things are essentially light bulbs and work on the >> exact same principle as my reflow oven but... >> >> I appreciate that there are glowing elements just below the glass so one >> might expect it but I wonder how warm they should get. >> >> The spec says operating range up to 70 degrees C and they are nowhere >> near that warm. >> >> I just wondered if anyone had any experience of operating this kind of >> display and what kind of heat you might expect to be generated? >> >> - Richard >> >> >> > -- 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/7de4572d-22e3-4830-ab9b-b252f331fdedn%40googlegroups.com.
