| 摘要 |
PROBLEM TO BE SOLVED: To reduce the number of parts for an inverter control circuit for an induction heating(IH) rice cooker/warmer, of which the circuit controls a plurality of loads for saving the time and trouble for board designing and reducing price, and further broadening the range of choice for a microcomputer 19 and simplifying the software. SOLUTION: The inverter control circuit is provided between a drive circuit 17 and inverter portions 12a and 12b, with an inverter portion changeover circuit 18 for switching the target of the output of the drive circuit 17 between the inverter portions 12a and 12b, according to inverter portion changeover signals outputted from an output terminal OUT3 of the microcomputer 19. The inverter control circuit is also provided between a power-setting signal circuit 21 and a comparison circuit 16 with an output voltage range changing circuit 22, that changes the output voltage range of the power setting signal circuit 21, according to output voltage range changing signals outputted from an output terminal OUT2 of the microcomputer 19. |
