| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an induction heating device in which an output voltage of an active filter is not raised excessively even at a starting time of heating, and an output voltage of the active filter can early be stabilized. <P>SOLUTION: During a period of start up of the active filter 7 from a starting of the active filter 7 till an end of the start up at a starting time of heating, a drive control of an inverter circuit 15 is carried out so that a load impedance of the inverter circuit 15 from the active filter 7 can be stabilized. As a result, a variation of the load impedance of the inverter circuit 15 during a starting period of the active filter is controlled, and the active filter 7 is started up safely and in a short time without excessive rise of the output voltage, and stable operation can be obtained. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
