I would hope that your power supplies have regulated voltage, correct? Therefore they should both be the same voltage, within the tolerance of the voltage determining components, if the supply design has good load regulation. In the worst case, provide a voltage trimmer on one supply so that you can adjust it to balance the brightness of both sections. You may want to do that even in the case of equal loads, since a 1% difference in HV voltage will make about a 5% difference in cathode current due to the fact that the dropping resistor works over a small fraction of the HV voltage.
On Fri, Aug 19, 2022, 3:12 PM Max DN <[email protected]> wrote: > Hello, > > As mentioned in one of my previous posts, I'm building a nixie clock with > Dalibor's RZ568M tubes. > > > If I build a clock with 4 tubes and 1 colon divider, then I am not sure if > I should allocate 2 tubes + 1 colon to a power supply and 2 tubes only to > the other power supply. If I do so, the brightness in the 2 tubes only will > be different than in the 2 tubes connected to the colon. I could use PWM to > adjust brightness but let's assume that I just do direct drive with no PWM. > > -- 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/CAPbqtvcAMk0OysoHzLyizAKCZBWG9zzoSxxe3JxSOdgCYZZDJQ%40mail.gmail.com.
