BRUSHLESS MOTOR

摘要

A brushless motor which comprises a rotor (2) having permanent magnets (3, 4) and a coil (5) for rotating the rotor (2). In the motor, a switching element (11) is connected between the coil (5) and a power source, a magnetic sensor (7) is provided for detecting the position of one of the permanent magnets (3, 4) of the rotor to control the switching operation of the switching element (11), and a delay circuit (15) is provided for delaying a signal from the magnetic sensor (7) and then applying the delayed signal to the switching element (11). With this arrangement, the apparent hysteresis width of the magnetic sensor can be broadened and such a problem can be solved that variations in the hysteresis width of the magnetic sensor results in the disabled rotation of the rotor.