The main reason for not using that circuit is that I don't have that transformer to hand though I do have many DC power supplies available and I just wanted to get the voltage right.
Having looked in to it in more detail is seems that it's just a half wave rectifier which should yield 0.45 x 110 V = 49.5V - so could I just use a 50V dc supply instead? I would use a micro to generate the control signals - perhaps with a 74595 shift register to reduce the pin count - does that all sound like a plan? Richard On Saturday, 13 April 2019 05:15:42 UTC+1, Richard Scales wrote: > > I just discovered one of these tubes (labelled as a Dario ZM1050 / Z550M) > in what looks like NOS condition. > I heave read a lot about from from various sources such as: > https://www.dos4ever.com/Z550M/Z550M.html and here > http://www.tubebbs.com/tubedata/sheets/013/z/ZM1050.pdf and I note that > several articles refer to driving them in normal 'Nixie' mode rather than > using the 5V switching that they were designed to support. > > Before I hook this up to the grid I wonder if anyone here can confirm > voltages and anode resistor values that might stop me from frying the thing > as I also read that they might be few and far between. > > From various specs I have found they seem to suggest a supply voltage of > 90V ac and a cathode current of around 3mA. I am insufficiently qualified > to translate that to the 170v DC supply, strike and maintaining voltages > (and hence series resistor values) that I am more comfortable with. > > The pinout shows a cathode, an anode and st0 - st9 and from what I can > understand from the notes is seems that the original design concept was to > drive st0 - st9 with 5V levels as high voltage transistors were not readily > available at the time. > > Has anyone driven these in any way and if so, would they be able to > provide some further insight? > > -- 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/34de48a4-1c54-432f-9567-2b54d32988f5%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
