Blue LEDs under Nixie tubes might have a deeper purpose than appearance- they can also help the Nixie tubes get started upon turn-on (especially if they're getting old). I once stayed in a hotel room whose light switches had neon indicators to help one find them in the dark, and the one near the entrance door was getting awfully marginal. I happened to have a blue LED penlight with me, and I found that shining that on the switch face made a radical improvement in making the neon indicator keep going, even at a range of > 20 feet. And this flashlight was no powerhouse either- it was a single LED with no auxiliary focussing optics.
Dana On Fri, Mar 5, 2021 at 1:05 PM John Moran, Scawby Design < [email protected]> wrote: > Ref. the original comment about a blue glow seen in a crystal, I would > suggest that it was simply a blue LED used in exactly the same way that > constructers of Nixie Clocks add LEDs under the Nixie tubes to make them > look more dramatic. > > John > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
