| 摘要 |
PURPOSE: A standby electricity controlling circuit of an induction heating cooker is provided to minimize the standby electricity when a cooker is not in use. CONSTITUTION: A microcomputer controlling circuit(140) outputs a control signal for the operation of an inverter circuit part(130) and outputs the signal to a control signal output terminal when the driving of the inverter circuit is needed according to the operation of an induction heating cooker by the command of a user. A high signal converts a transistor(Q2) to turn-on state, then path of current from the collector terminal to the emitter terminal of the transistor is formed and the base terminal of a first transistor(Q1) has the same potential state as the base potential. Accordingly, the base terminal of the first transistor is turned on by being fed with a low signal. And 22V DC voltage fed to the emitter terminal of the first transistor is supplied to the inverter circuit part when the first transistor is turned on. Thereafter, the inverter circuit part switches on/off the 22V DC voltage at a certain period, converted to high frequency voltage and output to a working coil under the control of the microcomputer control circuit part.
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