A current detecting circuit detects current of a high frequency inverter comprising an inducting heating coil. A current variation detecting circuit measures a change in magnitude of current with respect to time so as to detect displacement or lift of a cooking pan. A control circuit controls the output of the high frequency inverter, based on measurement result of current variation detection circuit.
申请公布号
EP1414276(A4)
申请公布日期
2005.01.19
申请号
EP20010274766
申请日期
2001.11.21
申请人
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
发明人
HIROTA, IZUO;FUJITA, ATSUSHI;MIYAUCHI, TAKAHIRO;FUJII, YUJI;KATAOKA, AKIRA;NIIYAMA, KOJI