This is the place for any magazine-related discussions that don't fit in any of the column discussion boards below.
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The pull up was added as a failsafe for a missing control signal, this will keep the fan running and prevent loss of cooling. The control signal is from an open-collector / open drain-output so I think 10K will work.
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Ok, sounds good. You should be all set then...
LEDs vs Bulbs, LEDs are winning.
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