Basically speaking, the structure of the ceiling mounted fan is generally made up of motor, wind blade, timer, rectifier, and capacitor and so on. The capacitor of the ceiling mounted fan has the function of starting the motor. And the ceiling mounted fan uses a single-phase capacitor running asynchronous motor, and the single-phase capacitor motor has two windings, the starting winding and the running winding. The space difference between the two windings is 90 degrees, and a capacitor with large capacity is connected in series on the starting winding. While the running winding and the starting winding pass through the single-phase alternating current, the current in the starting winding is 90 degrees ahead of the running winding due to the action of the capacitor. So it leads the factor that the maximum value is reached first. Therefore, two identical pulsed magnetic fields are formed in time and space, resulting in a rotating magnetic field in the air gap between the stator and the rotor. Under the action of rotating magnetic field, inductive current is produced in the rotor of the motor, and the interaction between current and rotating magnetic field produces the torque of electromagnetic field, which makes the motor rotate.
Specifically speaking, the larger the capacitance of the capacitor of the ceiling mounted fan is, the faster the speed of the motor is, of course, the greater the current of the motor is. When the motor is running, the capacitor is used when the starting capacitor is started, and after the starting capacitor is started, the starting capacitor does not participate in the equipment operation. So if the motor creates heating after the replacement of the capacitor, it means that the capacitor e capacity is too large. If the capacitance value does not exceed 20%, then the impact is not significant. And the capacitors of a general ceiling mounted fan are 1.1uf, 1.2uf and 1.5uf. So for example, for the ceiling mounted fan of the bathroom, you’d better match the capacitor ranged from 1uf to 1.2uf. The capacitor of the ceiling mounted fan has the function of starting the operation of the ventilator and auxiliary operation and the capacitor has different sizes, so as for which type of capacitors should be used in a ceiling mounted fan, it is best to check the actual capacitor model firstly.