| 摘要 |
<p>PURPOSE:To obtain the captioned apparatus that controls room temperature according to outputs of a bridge circuit including a room temperature detecting element, etc., wherein the amount of blown air can be automatically controlled, so that the air amount is maximized when cooling or heating is maximized, and the air amount is minimized when cooling or heating is minimized. CONSTITUTION:When the instant apparatus is applied as a controller for cooling and heating a car, and for example when the outdoor temperature and the car interior temperature are higher than a set temperature, a cooler unit is operated by the outputs of the bridge circuit 40 including a car interior temperature detecting element 9 and a car interior temperature setting variable resistor 12. Since voltage at a point (d) that is an output of an amplifying circuit 50 is above a reference voltage at a point (e), and voltage at a point (g) that is an output of a differential amplifying circuit 60 is above a reference voltage at a point (f), an output is issued via a diode 24 and a resistor 26 to the amplifying circuit 70. Since the output voltage of the circuit 70 is above the reference voltage at a point (i) of the driving circuit 80, the voltage applied through Darlington circuit 38 to a blower motor 39 becomes higher, so that the amount of air for cooling is increased.</p> |
