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How the DC fan work?
How the DC fan work?

DC cooling fan DC currents are used to provide power: DC cooling fans speate of two major components of the stator and rotor poles (winding or permanent magnet) on the stator and rotor winding energized, the rotor magnetic field (magnetic poles) is also formed, an angle between the stator and rotor pole, the mutual attraction of the stator and rotor magnetic field (N pole and S pole) of the motor rotation. change the seat of the brush, you can change the stator and rotor pole angle (Assuming that the direction of the stator magnetic pole is the angle between the starting side of the rotor pole on the other side by the magnetic poles of the rotor to the stator magnetic pole in the direction of motor rotation direction), so it's changing the direction of rotation of the motor.

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