Thank you for making this test, Kevin! Nice to see the tubes passed :-) It is interesting, that the current jumps from zero straight to milliamps scale - theoretically there should be a small current (10E-5 - 10E-6 A) flowing at the voltage close to the striking one (Townsend discharge). The voltage is not yet enough to create a self-sustaining glow, but high enough to accelerate the free electrons towards the anode, creating a measurable current. I normally work with instruments not sensitive enough for this test, so I never tried..
Regards! On Wednesday, 11 November 2020 at 23:15:04 UTC+1 gregebert wrote: > I had to generate that data by hand measurements....talk about tedious. > > Your measurements confirmed what I saw as well: the ionization and > extinguishing voltages are pretty close to eachother. Generic neon bulbs > have much higher hysteresis. > I was not able to determine any significant difference in ignition voltage > for a dark vs illuminated room. > > It would be good to see if there are any changes after the tubes have been > in-service for awhile, say yearly checkups. > > I'm still waiting to get back on my feet so I can get my clock finished. > They are magnificent tubes. > > On Wednesday, November 11, 2020 at 1:50:35 PM UTC-8 Jon wrote: > >> Thanks Kevin, this is really interesting stuff! >> >> Jon. >> >> On Wednesday, November 11, 2020 at 9:03:43 PM UTC Kevin A. wrote: >> >>> By the way, if you find the SMU instrument interesting, I wrote a >>> detailed article about what it is, and how it is used: >>> https://neonkev.com/2020/09/21/precision-swiss-army-knife-the-smu-source-measure-unit/ >>> >>> On Wednesday, November 11, 2020 at 4:01:23 PM UTC-5 Kevin A. wrote: >>> >>>> On Wednesday, November 11, 2020 at 4:01:01 PM UTC-5 Kevin A. wrote: >>>> >>>>> Some pics of the test setup >>>>> >>>>> -- 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/0bf84757-2ab4-42e0-bc36-f5a921bbc580n%40googlegroups.com.
