Hisense KFR-25GW-06BP inverter air conditioner room air deflector motor drive circuit

Shown is the Hisense KFR-25GW/06BP ​​inverter air conditioner room air guide motor drive circuit . The motor that drives the air guide plate to swing
is also called a blade motor. This motor uses a stepper motor, which uses a pulse signal drive method. , a certain
period of driving pulses will cause the motor to rotate by an angle. As can be seen from the figure, DC +12 V is connected to the center tap of the two sets of coils. The microprocessor
controls the four pins of the coil through the inverting amplifier. When a certain pin is low level, the winding connected to the pin There will be current flowing. If
the current of the winding is controlled according to certain rules, the desired rotation angle and direction can be achieved.