| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To restrain higher harmonic noise by alleviating distortion of input current at either of heating, through sharing of a switching element and a control circuit, in a compound heating cooking device alternately performing induction heating and high-frequency heating. <P>SOLUTION: A control switching part 35 connects a switch 34 to a b-side in a high-frequency heating mode, and to an a-side in an induction heating mode. In the high-frequency heating mode, an on-time correction treatment part 33 decides on a correction value of an on-time in accordance with a phase of a direct-current input voltage, and corrects the on-time decided in accordance with an input setting value at an output control part 36 to decide the on-time. In the induction heating mode, an on-time decided at the output control part 36 in accordance with the output setting value is adopted as it is, irrespective of the direct-current input voltage. With that, distortion of the input current can be alleviated in either case of supplying current to a magnetron 6 as a load with non-linearity or to an induction heating coil 5 as a load with linearity. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
