Universal Motor

Universal motors including single phase motors using stator winding and the winding rotor. Universal motors used on the sewing machine, hand drill motor. Routine maintenance is done by replacing the carbon brush or it spring. Its Construction is simple, reliable, easy to operate, small power, big torque universal motor is used for domestic appliances.

Universal shape of the motor stator comprises two stator poles. Winding rotor having twelve winding grooves and comes commutator and carbon brushes which connect in series between the stator winding with a winding rotor. High-speed universal motor has about 3000 rpm. Figure below shows the rotor and stator.

Example of using a universal motor is on the sewing machine.