Theory is that one of the reasons for the anode mesh in Nixie tubes is to catch the material sputtered off the cathodes during use. Some tubes (I’m thinking IN-18) have gaps on the sides that let material through during the burn-in process. The presence of material on the glass in these tubes does not mean the tubes are used.
Anyway, you can blame divergence meters for the price of 5441A tubes. -- 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 post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/bcaf1581-6278-4c14-a03d-82e7044fe4fd%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
