On 2/16/11 6:02 PM, Adam Jacobs wrote:
Multiplexed, people usually drive their tubes a little bit above the
nominal current to maintain the brightness that they like. If you look
in the archives, you'll find where someone has a formula for how nixie
lifetime decreases with increased current. (Maybe it was David Forbes?)
Not sure..
Anyways, yes, multiplexed and 2.6ma is fine.
-Adam
The formula for lifetime is: lifetime is proportional to 1/(I^3).
I found that multiplexing at 2x rated current for 1/6 duty cycle worked
well and gave similar lifetime to direct current.
I have a clock on my mantel that's been running a set of ZM1040 tubes
with 1/6 multiplexing for 9 years with some darkening of the glass but
it still looks very good.
--
David Forbes, Tucson AZ
http://www.cathodecorner.com/
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