| 摘要 |
PROBLEM TO BE SOLVED: To control the temperature of a pan over a large variation range while preventing the loss and the noise generation of a switching element and the like due to short-circuit current and regenerative current. SOLUTION: This inverter device makes a pan 19 generate heat by means of electromagnetic induction heating by virtue of a high frequency magnetic field that is generated by supplying power to a magnetic field generation coil 12 by means of turning on and off a switching element (Q) 14, and thus generating the high frequency magnetic field while resonating the magnetic field generation coil 12 and a resonating capacitor 13. This device is composed of an E-class control signal circuit 30 and the like to turn on and off the switching element (Q) 14 at switching period of the on-time that brings it into an E-class operation mode in which no short-circuit current nor regenerative current flows to the switching element (Q) 14, and an output control signal circuit 21 to control the temperature of the pan 19 by blocking power supplying to the magnetic field generation coil 12 using the switching period as a unit. |
