Hi all! I have a question about multiplexed nixies (2x3 - 2 turned on at a time). First of all.. I cannot get a 2mA (or at least I think so) on my IN-14s. It lead me to completely remove the anode resistor! Can a nixie tube be harmed if it does not have an anode resistor? Without any resistors, I can get up to 1.8mA measured with my multimeter in DC mode.
So I figured to try to calculate it. I think that the multimeter in DC mode shows average readings (that's true, right?). So with the formula that the average current equals Vpp*T1/T, in which T1=4ma, T=13.6 and Iavg=1.8mA, Vpp equals 6.12mA. Is that really possible? I would say that the current would be much higher. My 555 supply is capable to deliver at least 15mA at 200V (tested). So with Vpp I calculated that by the RMS formula Irms=Vpp*sqrt(T1/T), RMS current is 3.32mA, which is impossible by my judgement of brightness. I will hopefully get my hands on a scope this week to check out the real peak current. But is there anything I can do before, or even if I get a chance to use a scope? Many thanks! -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
