Le 20/04/2011 16:17, John Ackermann N8UR a écrit :
I wonder if it's smart enough to have a sanity check to determine
whether the line frequency is 50 vs. 60 Hz?
BTW -- I have an Ecodrive watch, but it's radio controlled (as well as
solar charging), so haven't seen any reference to this setting method
before.
John
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On 4/20/2011 10:13 AM, paul swed wrote:
My bet would be flicker and divide by 120. Doesn't really matter. But
since
these watches use the light to charge the battery, sensing the
frequency is
a byproduct. Nice and simple.
I don't buy it. Makes a nice urban myth though. Incandescent sources
don't flicker like fluorescent sources and the Skyhawk user manual does
not recommend charging in front of flouresecent tubes to maintain accuracy.
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