| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an induction heating cooker which can heat both of an iron pan and an aluminum pan which have large differences in skin resistance, not relying on change-over of contact connections such as relays as a change-over device. <P>SOLUTION: An output voltage of a direct current source circuit 2 is converted to a high-frequency voltage in magnetically coupled inner/outer heating coils 4, 5 by a high-frequency power control means 3. The high-frequency voltage is applied to each of magnetically coupled inner/outer heating coils 4, 5 at the same frequency while controlling the phase difference. Consequently, a load impedance is adjusted utilizing a mutual impedance of the inner/outer heating coils 4, 5, and a pan to be heated 7 having a largely different skin resistance like an iron pan and an aluminum pan can be heated to the same degree. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
