It seems like fans are always off-high-medium-low. Is there a reason for this?
In: Engineering
I’ll take a stab at it.
0 no power
3 = highest speed which means the least resistance to the motor.
Each step down (3 -> 2, 2-> 1), you apply more resistance. Which decreases the power to the motor.
Basically, they could go up in speed but it would increase the complexity of the circuits driving the motor.
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