CURRENT-LIMITING PROTECTIVE DEVICE OF MOTOR

PROBLEM TO BE SOLVED: To provide a current-limiting protective device capable of reducing noise in switching motors. SOLUTION: The device has a motor coil and a drive unit, wherein the drive unit is electrically connected and drives a motor formed by the motor coil and operates the motor. The device has a sensing unit electrically connected to the motor coil so that the drive level of the motor coil can be detected, and the drive level is compared with a set value reference level of the sensing unit to output a determination signal. The device has a control unit electrically connected to the sensing unit and a hall device, wherein the control unit adjusts a drive level to be outputted from the drive unit to the motor coil on the basis of the determination signal outputted from sensing unit and causes the drive unit to maintain a basic duty cycle. COPYRIGHT: (C)2009,JPO&INPIT