Now I can't unsee the pink! I have a NL7037 that has that pink tinge for the first five or 10 minutes if it has sat for more than a few weeks. It goes away after about 30 mins.
On Wednesday, April 8, 2020 at 1:24:59 AM UTC-4, [email protected] wrote: > > My tubes were over driven by 2X-4X compared to the maximum values in the > B7971 data sheet: HV=-195V, cathode resistors=430ohms, MUX duty cycle = > 12%. After running 24/7 for 40+ years, the tubes are very slightly dimmer > than the tubes I had kept as spares with a slight color shift. (You can > see this color shift in the PEOPLE LIKE NEON movie at the top of this news > group, where tube #3 has some pink in addition to the orange glow. My > spare tubes also glow slightly pink, while all the old tubes are uniformly > orange.) After 40 years, the only significant change was darkening on the > inside of the glass and on the back plate under the segments that I used > (in a seven segment display mode). There were two clocks, and the > darkening on the glass in each set was uniform, but it was more pronounced > in one of the sets; I suspect this may have been exacerbated by the amount > of overdrive. > -- 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/8a64830f-1b8c-475c-92ed-59deed96df6e%40googlegroups.com.
