Agreed. I've had a DR2000 clock running for years, never noticed any significant heat from the tubes at all....
On Thu, May 7, 2026 at 5:33 PM 'Oskar' via neonixie-l < [email protected]> wrote: > I have no experience with IV-9s specifically, but I do have a DR2010 > Numitron clock, and the tubes don't even get slightly warm. They feel close > to ambient temperature even after hours of operation. Granted, I am > slightly underdriving them but I doubt running them at their rated current > would make a significant difference. Based on that, I am fairly confident > that active cooling isn't necessary for your use case. > > > newxito schrieb am Freitag, 8. Mai 2026 um 00:16:43 UTC+2: > >> Has anyone measured how hot an IV-9 can get? Right now, I don’t have >> access to a tube to test myself. >> >> I'm wondering if I need to foresee some kind of active cooling for my >> project. I’m designing a calculator with 16 x IV-9 tubes in a closed case >> with some ventilation slots. If I calculated this correctly, they would >> dissipate about 11.5 watts if all segments were on and that’s a lot… >> > -- > 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/32bdb20a-3fc4-4b5c-9f38-a4095b19ded5n%40googlegroups.com > <https://groups.google.com/d/msgid/neonixie-l/32bdb20a-3fc4-4b5c-9f38-a4095b19ded5n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- 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/CAOX%2BRHJxYhkLU3jyJy0s9sZohSSMEREFb4GOmyHZocmHTn245Q%40mail.gmail.com.
