On 8 Dec 2012, at 15:58, threeneurons wrote: > "Sleeping Sickness". A form of cathode poisoning, from not being powered for > some time. It appears that sitting idle for too long, effects the surface of > the metal cathodes. This effects the work function, and they light up, > unevenly. Its a problem for all cold cathode tubes. Did you run them for a > few hours, or so, at elevated current ? This usually cures the problem. But > not always.
I have today run a pair of new Burroughs B5092 round top view jobbies and they both had cathodes that refused to light. In one or two cases the legs would glow instead of the digit. A couple of digits looked plain dead. After poking about lighting various digits they have all woken up and started to fire normally, which is a relief. Trying to fire them later they were again sluggish for the first few attempts to light. I am sure they will start behaving better once they are run in. John S -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to neonixie-l@googlegroups.com. To unsubscribe from this group, send email to neonixie-l+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
