The anode is the rear large surrounding metal plate and possibly also two of the special electrodes that you can see in between the digits, they look sonething lik -|-|-|- if you look at the auction photos here, 2nd and 7th from top if I see correctly: https://www.ebay.com/itm/nixie-tube-PAIR-giant-round-long-life-NEON-READOUT-valve-BURROUGHS-1-8-inches-x2/254603559779?hash=item3b478e0363:g:fGkAAOSwZgBexnKE
/Martin On Wednesday, 9 September 2020 12:59:02 UTC+2, Bill Notfaded wrote: > > Speaking of anodes did you see these tubes? > [image: s-l400 (97).jpg] > Where are the anodes in these big Mama's? > > Bill > > On Tuesday, September 8, 2020 at 9:24:58 AM UTC-7 Bill Notfaded wrote: > >> Another neat one is the ultra fine mesh IN-8 nixies. Harder to find but >> really look great! http://www.swissnixie.com/tubes/IN8FINE/ >> >> Bill >> On Tuesday, September 8, 2020 at 5:06:35 AM UTC-7 Paul Andrews wrote: >> >>> I would say that the different anode styles are definitely an attempt to >>> trade off effectiveness, visibility and ease of manufacture. >>> >>> Some early nixies didn’t have an anode mesh. They just used the cage at >>> the back. I guess this wasn’t too successful though given that all later >>> nixies have the grid. Some (a lot of?) nixies have an additional anode, >>> part way up the stack of digits, it is usually shaped like a 1. I have >>> multiple types of top view nixie that have a rectangular anode grid that >>> doesn’t cover the whole stack - these tend to be later versions of the same >>> model, so it would seem that the design was continually being refined, >>> which is not really surprising. Off the top of my head, the only one I can >>> remember like this is the CD27. This tube also has the grid set two digits >>> down in the stack. Finally, the planar ZM1350 uses a transparent coating of >>> tin oxide as the anode grid. The technology evidenced in these tubes is >>> quite advanced, but ultimately short lived. >>> >>> My favorite anodes are the horizontal grids found in the ZM1177, ZM1175 >>> etc., not to forget the unique grid of the ZM1212/ZM1210. >>> >>> On Sunday, September 6, 2020 at 8:41:20 AM UTC-4 Robert G. Schaffrath >>> wrote: >>> >>>> 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/08ae4015-712f-4741-802c-f8d1f269e413o%40googlegroups.com.
