| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent a microcomputer from erroneously detecting an output voltage of an input current detection circuit even in a circumstance of a high frequency electric field and operate it normally. <P>SOLUTION: An induction heating cooker includes: an inverter 4 which supplies a high frequency current to a heating coil 3 for heating a pan (cooking vessel) 1 and heats the pan (cooking vessel) 1 by electromagnetic induction; a current detector 7 which converts a current flowing through the heating coil 3 into a voltage; an input current detection circuit 5 which is composed of a first rectifier 8 for rectifying an output signal of the current detector 7 and a smoothing circuit 9 for smoothing an output signal of the first rectifier 8; and a control circuit 6 which receives an output signal of the input current detection circuit 5 and controls an input power of the inverter 4 to cause the output signal to be a predetermined output or lower, wherein a bypass capacitor 10 is connected parallel to the first rectifier 8 of the input current detection circuit 5. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
