Are you willing to post a schematic of your current regulator driving multiple tubes?
Thanks, Steve On Thu, Oct 15, 2015 at 3:34 PM, gregebert <gregeb...@hotmail.com> wrote: > If you drive your tubes with a current-regulator, there's really no need > to regulate the HV supply unless you are trying to minimize the power. All > you need is to ensure the voltage is high enough for ionization. > > I've used current-regulated cathode drivers on two of my clock designs. My > present clock project uses a current-regulator on the anode side (each tube > has it's own PMOS device). The drive current is adjustable with a single > pot; I didn't see a need to tweak each tube's current independently, though > that is possible by swapping a resistor in the current-regulator. > > I've chosen current regulation instead of voltage regulation because the > brightness and 'wearout' of the tube is a function of the current. Nixies > have nonlinear I-V characteristics, and I've seen considerable variations > between tubes. All of this matters when you use a constant voltage + series > anode resistor to run the tube because you have to calculate the resistor > value based on min & max supply voltage, min & max tube-voltage, etc. It's > moot with a current-regulated driver. > > -- > 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 email to neonixie-l@googlegroups.com. > To view this discussion on the web, visit > https://groups.google.com/d/msgid/neonixie-l/6d72ff6d-d737-4316-a26f-f7012f999f70%40googlegroups.com > <https://groups.google.com/d/msgid/neonixie-l/6d72ff6d-d737-4316-a26f-f7012f999f70%40googlegroups.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- 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/CAOXC3DHouNHvtgJ1bUaTEfN492UvALOx9eiTk34UJ9qwkerO4w%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
