OUTPUT CURRENT DETECTION CIRCUIT OF POWER SUPPLY CIRCUIT AND DOMESTIC ELECTRIC APPLIANCE USING THE OUTPUT CURRENT DETECTION CIRCUIT

摘要

PROBLEM TO BE SOLVED: To provide an output current detection circuit of a power supply circuit reducible in the weight and size of an electric circuit as a whole.;SOLUTION: The domestic electric appliance (electric pot) comprises a control means (microcomputer 25) that executes prescribed operation by controlling load components (heaters 4, 5 and hot-water pump 7), and the control means is operated by being inputted with a DC current of a constant voltage converted by the switching power supply circuit 14 that uses a photocoupler 15. The domestic electric appliance also comprises: receiving wiring 28 arranged in the vicinity of the photocoupler 15; the output current detection circuit 27 of the power supply circuit 14 provided with amplification elements (transistors 31, 33 and 36) connected to the receiving wiring 28; a storage means 26 that stores in advance a comparison value that is an output from the power supply circuit 14 in a prescribed operational situation of the load component; and a comparison means (microcomputer 25) that compares an input value from the output current detection circuit 27 and a comparison value stored in the storage means.;COPYRIGHT: (C)2006,JPO&NCIPI