Just theorizing but it would appear to be for legibility. The anode has to cover the the surface area of every digit for uniform lighting and firing current. At the same time, too much anode material blocks the light. Of the various tubes I have, Rodan GR-111Pa’s use a very fine spiral type wire. B7971’s use something akin to window screen. My Philips ZM-1022’s use a honeycomb type anode. IN-12’s use a square hole anode. Some small Burroughs Nixies I have use a microdot type screen. Really seems to be a trade off between surface coverage and legibility.
On Saturday, September 5, 2020 at 10:19:13 PM UTC-4 Terry Bowman wrote: > I've noticed that Nixies have different kinds of anodes. Some have a fine, > rectangular mesh, others a more coarse mesh, and some a honeycomb design. > What's the reason? Performance vs. legibility? > > > Terry Bowman, KA4HJH > "The Mac Doctor" > > https://www.astarcloseup.com/ > > “The book said something astonishing, a very big thought. > It said that the stars were suns, only very far away. > The Sun was a star, but close up.”—Carl Sagan, *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 [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/077f4f0a-7780-4304-a588-96bcc3f149a7n%40googlegroups.com.
