BLOWER DRIVING CIRCUIT PREVENTING DAMAGE BY EASILY DETECTING LOCKING OF BLOWER MOTOR

摘要

PURPOSE: A blower driving circuit is provided to prevent damage by interrupting driving of a blower motor by easily detecting locking of the blower motor. CONSTITUTION: A blower motor(30) rotates a blower. A blower control unit(20) outputs a blower signal for driving the blower motor according to a blower control signal and a feedback signal from the blower motor, and interrupts the blower signal if a voltage of the feedback signal is equal to a power voltage in magnitude. A power transistor is turned on by receiving the blower signal to drive the blower motor.