Only with UV, and even then it's very faint. On Thursday, July 18, 2024 at 3:19:39 PM UTC-7 Nicholas Stock wrote:
> Greg, can you see the burn in with the naked eye or do you need the UV > lamp to assess.. > > On Thu, Jul 18, 2024 at 2:22 PM liam bartosiewicz <[email protected]> > wrote: > >> The phosphor should be P31. I’m wondering if external deflection coils >> could be used to slightly alter the position of the digit to counteract >> burn-in. >> >> On Jul 18, 2024, at 1:06 PM, 'Grahame Marsh' via neonixie-l < >> [email protected]> wrote: >> >> >> >> Do we know what the green phosphor is P1, P31 or something else? >> On 18/07/2024 15:26, gregebert wrote: >> >> Interesting that the supply mentions 3.2kV; the nominal anode voltage is >> 1850 volts. As with nixie tubes, I suspect the current is the critical >> parameter as it determines the brightness (amount of phosphor burn). And, >> like nixies, there is a minimum voltage required for illumination. So, >> there isn't an exact operating voltage that must be strictly adhered-to. >> Also, I have not found any info that suggests harmful radiation (X-rays) >> are produced anywhere near 3kV, so I wouldn't worry about getting nuked >> from a NIMO tube or small monochrome CRT. >> >> I've run my NIMOs just below the 30uA current and in the vicinity of >> 1850V for less than 50 hours of operational time, and with a UV light >> source I can see slight phosphor burn. I dont run it as a clock very often, >> fearing that I will either burn the phosphor or burnout the filaments, yet >> at the same time I do want some enjoyment out of this multi-year project. >> Decisions, decisions...... >> >> On Thursday, July 18, 2024 at 6:49:27 AM UTC-7 Robert Norman wrote: >> >>> On EBay with four tubes >>> https://www.ebay.co.uk/itm/305672059360?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=2izFn68PQ-6&sssrc=4429486&ssuid=U1YeAcPgQ5y&var=&widget_ver=artemis&media=COPY >>> >>> >>> Not my auction >>> >>> >>> Rob >>> >> -- >> 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/8ce82c0a-dfb6-4b7b-85f0-0bfd5460e70cn%40googlegroups.com >> >> <https://groups.google.com/d/msgid/neonixie-l/8ce82c0a-dfb6-4b7b-85f0-0bfd5460e70cn%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> >> -- >> 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/090e66ad-2bab-4bd8-87b5-47545847a499%40googlemail.com >> >> <https://groups.google.com/d/msgid/neonixie-l/090e66ad-2bab-4bd8-87b5-47545847a499%40googlemail.com?utm_medium=email&utm_source=footer> >> . >> >> -- >> 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/CF456C8B-7585-4CC3-AC2B-F39F6A67BB6B%40gmail.com >> >> <https://groups.google.com/d/msgid/neonixie-l/CF456C8B-7585-4CC3-AC2B-F39F6A67BB6B%40gmail.com?utm_medium=email&utm_source=footer> >> . >> > -- 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/300a683c-6329-4dbc-b16a-832124c0dcd0n%40googlegroups.com.
