You can change the resistance by rotating the knob.
Capacitor type fan controls.
Solid state speed controls.
A start or run capacitor can be combined into one capacitor called a dual capacitor with three leads but can be split between two separate capacitors.
While the run capacitor stays on giving the motor extra torque when needed.
Starting winding is also known as auxiliary winding while running windings is known as main winding.
Generally the ceiling fan motors are split phase single phase ac motors.
Capacitors capacitors control the flow of power to a fan motor.
Capacitor controls are commonly identified by having 3 or 4 distinct speeds instead of infinitely variable speed selection.
This type of regulator helps you to save power at all speeds of the fan.
There are two windings inside the ceiling fan known as starting winding and running winding.
A capacitor receives 100 percent of the power supplied from a power source to a fan motor and meters how much of that power the motor actually receives.
Ceiling fan motor circuit diagram.
For instance if you set a wall switch to 33 percent power the capacitor supplies the motor an appropriate amount of electricity.
You can overcome this problem by using capacitor regulators.
Below is the circuit diagram of split phase induction motor in a ceiling fan clearly showing a capacitor connected in series with the starting winding auxiliary winding.
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