The commutator is composed of a brush and a commutator ring, and the carbon brush is a kind of brush. Due to the rotation of the rotor, the brush is always friction with the commutator ring, and the spark corrosion will be generated at the moment of commutation, so the brush is a wearing part in the DC motor. In order to improve the service life of DC motor, operation stability and reduce the noise and electromagnetic interference of DC motor, brushless DC motor has gradually replaced the trend of brushed motor. General AC motor does not use constant magnetic field, so there is no need for commutator, there is no need for brush; However, the volume of AC motors is generally relatively large. The motors used by household appliances are generally AC motors, such as fans, washing machines, refrigerators, air conditioners, etc., without carbon brushes, but there are also DC motors that use DC motors, such as many electric shavers, kitchen appliances, electric bicycles, etc., which have carbon brushes, that is, DC motors (excluding brushless ones). The motors that use dry batteries are DC motors.
Typical Applications
Household appliances: hair dryer, popcorn machine, massage
Power Tools: drills, electric screwdrivers
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08/05/2024
