Abstract: A temperature regulating apparatus for an air-circulated refrigerator is disclosed, capable of keeping the refrigeration room temperature constant by way of closely regulating the flow rate of cold air admitted into the refrigeration room. Also disclosed is a control device for controlling operation of the temperature regulating apparatus. Such a temperature regulating apparatus comprises a core member 50 either extendible to open up the cold air inlet port 12 or retractable to close off the same. A multiple turns of a coil 54 surrounds the core member 50 in order to produce a varying level of inductance i.e. an electrical signal proportional to the axial displacement of the core member 50. This electrical position signal is transmitted to a control device 20 which serves to control the operation of the damper flap actuator based on the temperature signal from a temperature sensor 22.

Abstract: A novel voltage switching device operable under a first and a second source voltages is disclosed. The device, which is capable of converting one of the source voltages to the design voltage of an electrical appliance when the two are different, comprises a connector having voltage indicators representing the first and the second voltage switching positions, respectively; and a voltage switching plug having a groove and a pair of fuses for the different source voltages. The connector, in one of the embodiments, may have two pairs of guide slots arranged in a perpendicular relationship between the two pairs. The plug may have a pair of complementary members apt to be selectively engaged with any one pair of the slots when the plug is coupled with the connector. The plug can be accurately coupled with the connector in the first or the second source voltage position based on a simple reading of the corresponding voltage indicator through the groove provided in the cover.