Capacitor Type Fan Controls

You can change the resistance by rotating the knob.

Capacitor type fan controls.

The start capacitor gives a fan motor the torque it needs to start spinning then stops. 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. There are two windings inside the ceiling fan known as starting winding and running winding. While the run capacitor stays on giving the motor extra torque when needed.

Capacitor controls are commonly identified by having 3 or 4 distinct speeds instead of infinitely variable speed selection. Solid state speed controls. The regulating unit is visible as a much smaller knob compared to those of conventional resistors. 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.

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. 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. Capacitors capacitors control the flow of power to a fan motor.

This type of regulator helps you to save power at all speeds of the fan. Most capacitor type controls can only operate one fan per control so multiple fans require multiple controls. You can overcome this problem by using capacitor regulators.