4 untested NIMO tubes were sold for 1500 Canadian (about 1100 USD). Someone is serious about making a clock, and this is a good start.
I designed my own HV supply and that was the most-challenging part (my fault- I made it too complex, though I can program it to any voltage I want via software), so whoever bought this is well along their way and I wish them all the best. On Thursday, July 18, 2024 at 5:26:43 PM UTC-7 gregebert wrote: > 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/2229fc34-f702-4c3c-b8e7-5ca1dba13cc6n%40googlegroups.com.
