Full "deflection" happens with 12mA, and the tube gets a little non-linear past 8mA. Monitor the current thru the tube, and the voltage across the tube, at the same time. Make sure your supply is up to the task before finding fault in the tube.
<https://threeneurons.files.wordpress.com/2011/08/bargraph.jpg> On Monday, November 12, 2018 at 8:49:50 AM UTC-8, Mateusz Dziuba wrote: > > Hi! I started working on another project involving IN-9 nixies, so I > bought 10 of them on ebay and I am in the middle of the testing. > Unfortunately the tests didn't go as far as I would like to. > > I built a current mirror on 2xMPSA42 and 1k potentiometer as reference. As > most of the lamps light up only to the half of cathode I left them burning > on max current for hour or two and achieve 8-8.5 mm glow only. Now I am > stuck. When I measure the current flowing through Nixie, I get 10.1-10.4 mA > max on each lamp and cannot get further. > > Is this a problem with gas in my IN-9 or maybe is this a configuration > problem? > -- 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/2e72ced0-2176-46b6-8ac0-bb21f33f5e54%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
