| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To precisely control heating power in an induction heating cooker. <P>SOLUTION: This cooker is constituted so that a high frequency current generated at an inverter circuit (3) is supplied to a serial resonance circuit (4) formed by a heating coil (27) and capacitors (28, 29) for inductively heating a heated object (31), and the heated object is heated. Firstly, a coarse adjustment of input power is carried out by varying a switching frequency of the inverter circuit, and next, the input power is made to coincide with a target power value by a fine adjustment of a DC voltage supplied to the inverter circuit. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
