| 摘要 |
PROBLEM TO BE SOLVED: To provide a control method that can change the heating power over a wide range by reducing the electromagnetic noise in the induction heating device, in which inverters that supply high-frequency power individually, to each of the plural sets of resonance load circuits, are installed in the same case. SOLUTION: Power factor for the high-frequency power that is outputted by the inverter main circuits 51, 52 is made capable of operating in both the directions of gain or loss, and by this operation the frequency of the high-frequency power is made lie within a prescribed range. |
