Lg Electronics Inc.

Bong Jin Cho

Kyungsoo Hwangbo

Seongho Son

Jinwook Han

The present disclosure is directed to an apparatus for controlling temperature of component of power source separation circuit in which a temperature detection circuit may be implemented in a circuit that uses a power source different from a power source used by the control microcomputer, may directly measure a temperature of a circuit component, and may deliver a protective signal to the control microcomputer using a comparator and an insulating phototransistor, thereby implementing a protective operation.

Apparatus for controlling temperature of component of power source separation circuit

An induction heating device and a method for sensing a cooking vessel on an induction heating device are provided. The induction heating device may include a controller that converts a resonance waveform generated as current is applied to a sensing coil into a square waveform. The controller may determine whether a cooking vessel placed on the induction heating device has an inductive heating property based on a number of pulses of the converted square waveform.

Induction heating device and method for sensing a cooking vessel on an induction heating device

The present invention relates to an induction heating cooker including a synchronization circuit for a plurality of inverters, comprising: a first inverter including a first switching circuit unit for applying a first power source to a first heating coil, and a first control unit for controlling the first switching circuit unit; and a second inverter including a second switching circuit unit for applying a second power source to a second heating coil, and a second control unit for controlling the second switching circuit unit, wherein the first inverter further includes a first insulated signal transfer unit for controlling an operation of the second switching circuit unit, and the first control unit may match an operating frequency of the second switching circuit unit with an operating frequency of the first switching circuit unit by using the first insulated signal transfer unit.

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Seoul, South Korea

Bong Jin Cho