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/CAOX%2BRH%2Bu9-8dh7mCcJOsWpn7MxXzF9y9GifNgHP6mR7-%3DPk55A%40mail.gmail.com.
