| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce the size of an apparatus and the manufacturing cost. <P>SOLUTION: This matching circuit 1M provided in an induction heating apparatus includes capacitors 20A, B, C for 70, 30, 10 kHz connected in parallel to each other, a matching transformer 40 connected to the output stage of the capacitors 20A, B, C and used for the induction heating coils 50A, B, C for 70, 30, 10 kHz in common, and a switch part 30 selectively electrically connecting between a high frequency variable power supply 10 and one of the capacitors 20A, B, C. <P>COPYRIGHT: (C)2003,JPO |
