I reckon I am quids in here - I am 62 years old - and have had at least 2 direct drive clocks (Mike Harrison design) running continuasly for over 20 yrs now - I can't see any deterioation in brightness. But maybe my eyes are not as good as they used to be. I have built a 6 digit multiplexed B7971 clock which you could here singing in a quiet room - but i regarded that as a "feature" not an annoyance. But then my hearing is probably not as good as it used to be. I reckon the clocks I make now (given the average human lifetime) will be safe with either type of drive!
On Thursday, 20 September 2012 02:39:22 UTC+1, dr pepper wrote: > > So why is multiplexing a bad idea, and static displays make tubes last > longer?, does multiplexing accelerate cathode poisoning or something? > I have 3 or 4 prototypes I've put together and they all use > multiplxing, even the single tube ones use pwm as a brightness control > (and so probably inherit the 'bad habits' too). > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to [email protected]. To unsubscribe from this group, send email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msg/neonixie-l/-/h5ase8JbQk8J. For more options, visit https://groups.google.com/groups/opt_out.
