SPEED CONTROL CIRCUIT OF FAN MOTOR

摘要

Disclosed is a velocity control driving circuit for a fan motor. The circuit comprises a microcomputer, an inverter circuit, a differential voltage generating controller and a motor driver. The microcomputer outputs a control signals according to an input signal of difference between room temperature and set temperature. The inverter circuit inverts the control signals from the microcomputer. The differential voltage generating controller generates differential voltage among the control signals from the inverter circuit. The motor driver drives the motor according to a control signal from the microcomputer.