Are they also dimmed using an LDR? If so, turn dimming off - if you have access to the source code, you could turn dimming off briefly when the clock turns on.
On Wednesday, November 29, 2023 at 9:43:48 PM UTC-5 Jeff Walton wrote: > I've recently come across a situation where I have some tubes in a clock > that are being directly driven and are having trouble starting when the > room is darkened but light right up when a room light is turned on. These > particular tubes were probably intended for use in a calculator. They are > seven segment neon MG-17G tubes. Once the tubes have any of the segments > lit, there is really no issue with the performance. It's when the tubes go > completely dark if a space is used while scrolling a message or lighting a > dash on and off to emulate a colon. I'm wondering if others have found any > particular tricks to help convince tubes to light up. There is no > "baselighting" and the HV is ~172v. I'm considering increasing the HV by > 10-15v but don't want to over drive the tubes. Short of putting a > radioactive source in the vicinity, are there other things that anyone has > had any luck with? > > Jeff > -- 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/7fbe6a7f-5e98-4028-b1e2-e62ce35f8482n%40googlegroups.com.
