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:
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