ACTUATOR CONTROL DEVICE IN AUTOMOBILE AIR CONDITIONER

摘要

PURPOSE:To make a small-sized variable resistor and enable a fine sensing of a driving position of the actuator by a method wherein a sliding resistor part having a fixed resistor capable of being trimmed is arranged at both ends placed on a printed circuit board. CONSTITUTION:A driving position of a mode change-over damper 6 to be driven by an actuator 10 is sensed as a resistance value on the sliding resistance part 14c provided with the fixed resistors 14a and 14b and the resistance values Ra and Rb of the fixed resistors 14a and 14b are trimmed, thereby a variation in resistance of the variable resistor 14 is sensed by being changed over to a voltage signal with a range of upper and lower limits set in control operation.