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Ultra-low power standby power supply for AC 220v

A technology of AC power supply and standby power supply, applied in the field of power supply, can solve the problems of large standby power consumption, waste of electric energy, complicated circuit, etc., and achieve the effects of low power consumption, energy saving and low electromagnetic radiation.

Inactive Publication Date: 2019-03-05
YANBIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the standby power consumption is relatively large (about 0.5W~2W) to waste power
[0003] In this regard, people usually use the capacitor step-down method to solve the problem. The capacitor step-down method has the advantages of small power loss and small electromagnetic radiation. Can use optocoupler isolation, the circuit is very complex

Method used

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  • Ultra-low power standby power supply for AC 220v
  • Ultra-low power standby power supply for AC 220v

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Embodiment Construction

[0013] The content of the present invention will be further described below in conjunction with the accompanying drawings.

[0014] Such as figure 1 As shown, the ultra-low power standby power supply for AC 220V provided by the present invention includes a 220V AC power supply 1, a capacitor step-down power supply 2, a synchronous transfer device 3, a bridge rectifier 4, and a controller 5, and the capacitor step-down power supply 2 and The 220V AC power supply 1 and the synchronous transfer device 3 are connected together, and the synchronous transfer device 3 is connected with the capacitor step-down power supply 2 and the bridge rectifier 4; the synchronous transfer device 3 is connected with the controller 5 together. The capacitor step-down power supply 2 includes a first capacitor C1, a regulator tube DW1, a diode D1, and a second capacitor C2. One end of the first capacitor C1 is connected to one end of the 220V AC power supply 1, and the other end of the first capacito...

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Abstract

The invention discloses an alternating current 220V ultra-low-power standby power supply, which comprises a 220V alternating current power supply, a capacitive step-down power supply, a synchronous transfer device, a bridge rectifier and a controller, wherein the capacitive step-down power supply is used for generating a low-power direct current power supply from 220V alternating current voltage in manners of low power and low electromagnetic interference; the bridge rectifier is used for rectifying the 220V alternating current voltage and then forming a main power supply drive load; and the synchronous transfer device is used for transferring voltage generated by the capacitive step-down power supply to an output end of the ridge rectifier in a synchronous manner to drive the controller as the standby power supply. The alternating current 220V ultra-low-power standby power supply has the advantages that the low-power standby power supply with low power consumption and low electromagnetic interference can be formed to drive the controller, so that the power consumption generated in a long-term standby process of the controller is greatly lowered; electric energy can be saved; and public use of the 'ground' of the power supply and the 'ground' of the main power supply in a capacitive step-down mode can be achieved.

Description

technical field [0001] The invention relates to a power supply, in particular to an ultra-low power consumption standby power supply for AC 220V, which is transferred to a main power supply terminal to provide low power consumption and low power by adopting a capacitor step-down method to generate low power consumption and low electromagnetic interference voltage. Background technique [0002] In daily life, when people use various intelligent household appliances and equipment, they usually put the electrical appliances or equipment on standby for convenience, so that the controller can complete the corresponding work immediately after receiving the command. Therefore, the internal power supply of the equipment is divided into main power supply and standby power supply. The main power supply drives the load, and the standby power supply drives the controller. It is in a long-term working state. Usually, the standby power supply is generated by switching power supply or resis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/162
CPCY02B70/10
Inventor 金永镐张庆博
Owner YANBIAN UNIV
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