I'm mulling over this statement, and because I don't have a copy of Weston I'm struggling to interpret it:
In the well known Weston book he states that tube life is inverse > proportional to I^2.5, that means a lot of wear for just a little bit more > current. He also states that the mean current when pulsed (don't remember > dutu cycle) just had an impact of I^1.5. He had no definite explanation for > that, just empirical data from sputtering experiments. > > I'm interested if the "I" in the two equations is the same "I" (I suppose meaning the nominal, non-PWM adjusted, applied drive current), and over what range of duty cycle this empirical rule holds, or is the second "I" (in "I^1.5") somehow the first "I" adjusted for the duty cycle? I'm running a series of experiments to do with tube life on IN-1s (there is a separate thread on this elsewhere), and one of the observations I have is that PWM (in the form of dimming or multiplexing) does indeed increase tube life significantly. I am also experimenting with dark cathode bias, but have not got any results for that so far. Can anyone point me to an electronic copy of the book, (or let me see a scan of the relevant section)? -- 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 post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/8632e204-f39a-4583-8843-cd2b7cfbb8a8%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
