| 摘要 |
PROBLEM TO BE SOLVED: To accurately control each load in electronic equipment having a plurality of loads driven by receiving DC power obtained by rectifying AC power.SOLUTION: An induction coil 4c is driven by receiving DC power rectified by a rectifier circuit (a diode bridge) 48. A lid heater 4a and a keep-warm heater 4b are driven by receiving DC power rectified by diodes D1 and D2 connected in parallel to the rectifier circuit 48 with respect to a commercial power supply 470. The induction coil 4c, the lid heater 4a, and the keep-warm heater 4b have ground leads that are commonly connected. A current transformer 59 is provided between a connection node of a power line transmitting AC power and the rectifier circuit 48 and a connection node of the power line and the diodes D1 and D2, and detects a current flowing through the power line. A sub-CPU 10b performs energization control of the induction coil 4c, the lid heater 4a, and the keep-warm heater 4b on the basis of a current detection value of the current transformer 59. |
