欧美成人天天综合在线,国产亚洲欧美中文字幕,精品国精品无码自拍,久久精品国产免费

The application of varistors in micro motors is mainly to absorb the reverse electromotive force of the motor during commutation. To prevent the commutator poles from generating sparks when the commutator is short-circuited, the surface of the commutator and brushes will be burned due to high temperature, which will affect the service life of the motor and generate electromagnetic waves, which will interfere with the use of other electronic products.