>From what we measured, the afterglow disappears almost completely after 200uS, this should be enough for the dead time. The afterglow and ionization are two different processes - the tube stays ionized (presence of electrically charged particles) around 1mS while the afterglow (presence of particles in an excited state). It is a good idea to keep the dead time higher than 200uS to make sure the afterglow disappears, but not longer than 1mS - after this time there might not be enough ionized particles to strike the next digit instantly.
We made a video about it, you can see how the afterglow looks at 200 000 FPS: https://youtu.be/TK3E55fytC0?t=1376 There is also visible how fast the new digit strikes when there is no dead time left to deionize the gas - it is instant, well below 5uS resolution of the camera. Cheers On Friday, 23 October 2020 at 14:56:19 UTC+2 Leonardo Lisa wrote: > Hello, > I'm working on a IN-12 based nixie clock, the clock is based on k155id1 > cathode driver and the 4 digits are multiplexed. I'm would like to know if > some one has done some long term term test about multiplexing frequency and > dead time between the turn on of each digit. Any suggestion or good practis? > > -- 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/05aacbd0-df6f-4eee-8cd8-09496d7393fan%40googlegroups.com.
