No, you don't have to do cathode poisoning prevention routines if you're
never planning to display those other digits. For example, if the tens
nixie will never ever display anything besides "1" and "0" then the
other digits will become hopelessly poisoned but you won't care because
you'll never try to turn them on anyways.
Clocks that have sub-menus are the ones that need these routines the
most in my opinion. ie: the clock never displays anything besides a "1"
in the 10 hours position, but are using all of the cathodes in that tube
in the rare occasions that the menu is turned on. I usually have all of
the numbers slowly rotate through at full power (or slightly above) for
about an hour in the middle of the night.
-Adam
On 12/15/2011 4:34 AM, Shaun wrote:
I've read about exercisng Nixie tubes that don't regularly use all of
the display digits to avoid Cathode Poisoning. (E.g. the ten hours
digit in a clock).
What is the best strategy? Is it just a case of periodically cycling
the digits around for a time period? How often and for how long and
how fast should the tube digits be cycled?
Do you actually need to do this if the Nixie Tube is only ever going
to be used in a clock and therefore may only ever display a subset of
digits?
Thanks
Shaun
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