Fan (fan) speed electromagnetic noise damping filter of the adjustment device

摘要

The subject innovation relates to a fan of the vehicle (FAN) speed adjusting device, in particular a solenoid on / to attenuate the noise by using the electromagnetic wave noise filter is generated during off fan A to prevent malfunction of precision electronic equipment (FAN) speed adjustment It relates to an electromagnetic noise reduction filter of the device, and a temperature sensor for sensing a coolant temperature of the engine, the temperature sensor, the fan speed control unit and the fan speed to control the fan (fAN) speed according to the state for detecting the cooling water temperature and a fan to adjust the fan speed solenoid receives the fan control speed of the controller input through the PWM wave, the fan solenoid is constant for the electromagnetic wave noise reduction filter, the electromagnetic wave noise attenuation filter for attenuating an electromagnetic wave noise is generated as the on / off by being composed of a battery for applying a load, the subject innovation is written hameu using electromagnetic noise reduction filter solenoid on / off To attenuate the electromagnetic wave noise generated there is an effect that it is possible to prevent malfunction of precision electronic equipment in advance.