Power supply for low stand-by power consumption electromagnetic heating device and electromagnetic oven

Abstract

A power supply for a low stand-by power consumption electromagnetic heating device comprises a first power supply circuit, a controller and a second power supply circuit; a first AC (Alternating current) terminal of the rectification bridge stack of the first power supply circuit is connected with a first phase wire of the alternating current; a second AC terminal is connected with a second phase wire of the alternating current via an electromagnetic switch; and a negative terminal is connected with a first grounding wire; the controller is used to control the on-off of the electromagnetic switch; the second power supply circuit is used to supply power for a control circuit; the rectification circuit of the second power supply circuit comprises a first rectification loop and a second rectification loop; the first rectification loop consists of a first diode, a voltage dropping resistance, a first capacitance, a first reverse diode in the rectification bridge stack, and the electromagnetic switch which are sequentially connected by the first phase wire; the second rectification loop consists of a second diode, the voltage dropping resistance, the first capacitance, and a second reverse diode in the rectification bridge stack which are connected to the first phase wire by the second phase wire. The power supply circuit is concise and has low cost. The invention also provides an electromagnetic oven comprising an LC resonant circuit and the power supply.

Description

technical field [0001] The invention relates to an electromagnetic heating device, in particular to a power supply of the electromagnetic heating device with low standby power consumption, and also relates to an electromagnetic cooker. Background technique [0002] With the increasing global energy demand, energy conservation and emission reduction have become an important development direction of household appliances. In terms of standby power consumption, all countries have proposed corresponding standards, and the EU has stricter requirements in this regard. At present, the standby power consumption of ordinary induction cookers on the market is generally above 0.8W. Although some products achieve lower standby power consumption, the circuit is more complicated, the cost of components and manufacturing is relatively high, and at the same time, due to the large number of components, the failure rate also increases accordingly. How to achieve lower standby power at a lower ...

AI Technical Summary

Problems solved by technology

Although some products achieve lower standby power consumption, the circuit is more complicated, the cost of components and manufacturing is relatively high, and at the same time, due to the large number of components, the failure rate also increases accordingly. How to achieve lower standby power at a lower cost Power consumption has always been the focus of research in the field of electronic technology

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