Are you using their definition of "fail". They say "when any character is unable to be covered completely" but they don't define just how visible the 'non-covered' area is. Their spec also has to be either for the worst-case production scenario or a statistical value eg perhaps the Bogey value etc..
The earlier part of the chapter covering their spec for safe operating area also has to be taken into account. Mullard are usually ultra-conservative too. I do not think that their write-up contradicts real-life experience. They don't say how long a good tube can last; they just say a value it/all will exceed. John K. ----- Original Message ----- From: westdave To: neonixie-l@googlegroups.com Sent: Thursday, April 26, 2012 1:02 AM Subject: Re: [neonixie-l] Digest for neonixie-l@googlegroups.com - 8 Messages in 4 Topics 30,0000 hours is just over 3 years i never saw a nixie tube fail in so short a time;or go totally black from sputtering for that matter,nixie's can be run for 10 years with no visible discoloration ,i have done so,any others? ...clip.... -- 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 this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
