As far as I know iv-4 tubes are also rated for a longer lifespan and it might just be my eyes but iv-17s appear a little chunkier
On Wed, Jun 9, 2021, 5:27 PM Nicholas Stock <nickst...@gmail.com> wrote: > The only difference I know of is the filament voltages are different by > 0.2V. When operated in multiplex in the correct range, both IV4 and IV17 > look identical in my experience. > > http://www.tube-tester.com/sites/nixie/dat_arch/IV-4.pdf (filament 2.6V) > http://www.tube-tester.com/sites/nixie/dat_arch/IV-17.pdf (filament 2.4V) > > On Wed, Jun 9, 2021 at 2:16 PM Mac Doktor <themacdok...@gmail.com> wrote: > >> The subject says (asks) it all. I've read that they're identical. Perhaps >> the IV-17 came later? OTOH, I've also heard that VFDs with newer dates are >> dimmer. >> >> What's the skinny? >> >> >> Terry Bowman, KA4HJH >> "The Mac Doctor" >> >> https://www.astarcloseup.com >> >> “...the book said something astonishing, a very big thought. The stars, >> it said, were suns but very far away. The Sun was a star but close >> up.”—Carl Sagan, "The Backbone Of Night", *Cosmos*, 1980 >> >> >> -- >> 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 view this discussion on the web, visit >> https://groups.google.com/d/msgid/neonixie-l/C7B67C0D-2C8D-4A2E-A0CF-D0F011EADCD8%40gmail.com >> <https://groups.google.com/d/msgid/neonixie-l/C7B67C0D-2C8D-4A2E-A0CF-D0F011EADCD8%40gmail.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 neonixie-l+unsubscr...@googlegroups.com. > To view this discussion on the web, visit > https://groups.google.com/d/msgid/neonixie-l/CAOX%2BRH%2Bx0run3sRY%3DxH7fLstyEqt7-tDumVipLqbBd8nnHdeHQ%40mail.gmail.com > <https://groups.google.com/d/msgid/neonixie-l/CAOX%2BRH%2Bx0run3sRY%3DxH7fLstyEqt7-tDumVipLqbBd8nnHdeHQ%40mail.gmail.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 neonixie-l+unsubscr...@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/CAPDJQ6AjzFezFS2%2BEUz6gc_NPofR9VJUgKxvpWwMGvkMuSPtbw%40mail.gmail.com.
