Adjusting power to 24 hour fan that uses solar and battery

sghioto

Joined Dec 31, 2017
5,368
Here's the deal. Without the 40 ohm resistor the fan draws 140ma at 14 volts which = 1.96 watts.
With the resistor the current is 100ma and the dissipation is 1.4 watts total.
Leave the resistor in the box.
 
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