| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve usability by expanding range for heating through solution of a problem where a load normally judged qualified is judged not suitable for electric conduction, that is, disqualified, and at same time, to halt heating operation detecting cases such as no load, small load, that median load and median value of heating coil are deviated, or the cases of aluminum pan or copper pan. SOLUTION: A plurality of steps of different power are outputted in turn, aptitude of loads 5 is judged in accordance with the steps, and at same time, at least for one step among the above steps, a power changed according to the inputted voltage and aptitude of the load 5 is judged.</p> |
