Question: is the cycle long enough to effectively heat the surface to drive off the contamination? Are the pulses being driven at a high current for the milliseconds that they are on? By high current, I'm speaking of a rate that exceeds nominal by say- 2x to 3x? My understanding of the physics of cleaning the surface requires heating on either an instantaneous or continual basis to be effective in driving the contamination off of the cathode to expose a clean surface. I like the approach and would love to see a couple contaminated nixies (of the same type) subjected to some period of time using your method and conventional cycling and compare the outcome after months of operation. Nice video! Jeff -------- Original message --------From: 'Spirit's lab' via neonixie-l <neonixie-l@googlegroups.com> Date: 3/7/18 10:48 AM (GMT-06:00) To: neonixie-l <neonixie-l@googlegroups.com> Subject: [neonixie-l] An investigation into better ways to do cathode poisoning prevention - 1000 fps slow motion included While designing my own clock, I decided to investigate the cathode poisoning prevention methods utilized by most clocks, and I discovered that there's room to improve and experiment.Here's a short video: https://www.youtube.com/watch?v=skBwGGQ58MIIf you can't or don't want to watch: Switching between cathodes with a delay of 1-2 milliseconds is going to provide the same cleaning effect as the "slot machine", except without the extreme flicker which may be annoying to some. As for my design - it's two HV5522s in the PLCC package connected to an ESP8266(for driving the HV5522s the 3v3 signals are shifted to 5 - that works up to a supply of 12.9V) and Yan's NCH6100HV boost board. It would be interesting to see what everyone here thinks.
-- 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 neonixie-l+unsubscr...@googlegroups.com. To post to this group, send email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/d11e2b91-22ab-47a4-b81b-da27cb3e1bed%40googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- 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 neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/5aa029a5.11a66b0a.8675f.ad35%40mx.google.com. For more options, visit https://groups.google.com/d/optout.
