Oops, the second paragraph should be uS not mS is several spots. On Saturday, February 20, 2016 at 8:14:29 AM UTC-8, threeneurons wrote: > > Like John said, 20uS is way too short. Most nixies won't even respond. It > can take close to 50uS for a nixie tube just to ionize. Here's an old > scope, photo I took, of some signals going into a NL-905 nixie tube: > > <https://threeneurons.files.wordpress.com/2011/08/timing01.jpg> > > I stepped the anode voltage On for 4mS, then kept it Off for 12mS, and > repeated, for a 16mS total period, or ~64Hz. > > > The Anode is turned On at the beginning of the trace. Notice it takes ! > 30mS (30uS) for the tube to even start conducting. Full conducting at ~ ! > 50mS (50uS). It varies some with different model tubes, and quite a bit > with anode voltage. I did some speed tests, some 10 years ago, but lost the > file. I used a few types of nixies, and varied the anode supply from 180 to > 200V. Got the best results with a ZM1000, at 200V, and using its primer > (-100V 10M ohm) electrode. I got it to strike in ! 7mS (7uS). The presents > of light also speeds up ionization. > > > >>
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