| 摘要 |
PURPOSE:To provide an induction heating cooking device capable of accommodating the difference in materials of a load (pan or pot). CONSTITUTION:An input voltage detecting circuit 10 for detecting input voltage and an input current detecting circuit 11 for detecting input current are connected to a control device 9. The control device 9 calculates input power from the detected input voltage and input current in heating operation, and varies the ON time of a switching device 4 so that the difference between the input power and set power is made zero. The power correction us conducted, and when the corrected value is higher than a set value, the power is controlled by on-off control. In a normal state, power is controlled by frequency control, and the variable of ON-OFF time of the switching device 4 is set every power setting levels. |
