I did look through the XM1000 datasheet the other day (the Telefunken copy of the NIMO that had to be scrapped due to the patent battle between IEE and Telefunken, which IEE won) and found one interesting thing about running these displays multiplexed (just as the NIMO datasheet says that you can multiplex the displays) but they don't mention the decreased effect on the phosphor screen when doing so, like Telefunken says.
[image: XM1000-multiplex.JPG] With Google translate you get: " *To display multi-digit numbers, the number display tubes assigned to the individual digits of the number can also be operated, for example, in time division multiplexing at a high repetition frequency.The fear that the lifespan of the luminescent layer will be shortened due to the higher high-voltage value necessary for pulse operation is unjustified: at higher high voltages, the electrons penetrate deeper into the luminescent layer. Therefore, a larger proportion of the material of the luminescent layer is stimulated to glow.With the same beam current, this means reduced specific stress on the luminescent material.*" So multiplexing these might be a way to go to get a simpler circuit even if you have to raise the HV-voltage some to get the same illumination, and if what Telefunken writes is correct you'll get longer (?) life if you raise the HV-voltage as the stress on the phosphor screen is less - any comments on this? When looking through the XM1000 datasheet on my computer I also found a piece of paper that I had scanned for some old small transformers that I bought many years ago for other vacuum tube related experiments and they will do just fine in testing the XM1000 heaters as they have the possibility to select output voltages from 1V to 30V in 1V steps by jumpering the outputs correctly, or with two transformers with their primaries in series you'll get 0.5V to 15V in 0.5V steps. Now I'll just have to find a suitable CCFL-inverter to start some experimenting. /Martin -- 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/cee01903-1a10-40e1-83bb-8c39f3e1047ao%40googlegroups.com.
