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a power adapter

A technology of power adapter and relay switch, which is applied in the field of power supply, can solve the problems of difficult reduction and consumption of standby power consumption, and achieve the effects of widespread production and popularization, normal operation, and good electromagnetic compatibility

Inactive Publication Date: 2020-02-14
TIANJIN SAMSUNG ELECTRONICS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that for the display, the power adapter connected to it is the main part of the power consumption during standby. The main reason is that the current power adapter generally adopts the flyback topology. In the state, each part is still in the working state, and it is difficult to reduce the standby power consumption by ordinary methods

Method used

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Embodiment Construction

[0059] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0060] see figure 1 The present invention provides a power adapter, including an AC input circuit 101, an electromagnetic interference filter circuit 102, a rectification and smoothing circuit 103, a relay switch control circuit 104, a pulse width modulation (PWM) circuit 105, a transformer rectification filter circuit 106, DC voltage output circuit 107 and standby detection control circuit 108, wherein:

[0061] The AC input circuit 101 is connected to the external AC power supply, and is used to receive the AC voltage output by the external AC power supply, and then output it to the electromagnetic interference filter circuit 102 and the rectification and smoothing circuit 103;

[0062] The electromagnetic interference filter circuit 102 ...

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Abstract

The invention discloses a power adapter, comprising: an AC input circuit connected to an external AC power supply; an electromagnetic interference filter circuit used for filtering electromagnetic interference from the AC voltage output by the AC input circuit, a rectifying and smoothing circuit, and an electromagnetic interference filter circuit. The interference filter circuit is connected; the relay switch control circuit is arranged between the AC input circuit and the electromagnetic interference filter circuit; the pulse width modulation circuit is connected with the rectification and smoothing circuit; the transformer rectification filter circuit is connected with the pulse width modulation circuit The DC voltage output circuit is respectively connected with the transformer rectification filter circuit and the standby detection control circuit; the standby detection control circuit is connected with the relay switch control circuit. A power adapter disclosed in the present invention can significantly reduce the standby power consumption of the power adapter, has high stability and reliability, is beneficial to provide stable power supply for various loads such as displays, and ensures the normal operation of various loads such as displays. run.

Description

technical field [0001] The invention relates to the technical field of power supplies, in particular to a power adapter. Background technique [0002] In recent years, with the improvement of people's living standards, household electrical appliances such as televisions, video cameras, and cameras have become more and more popular in people's daily life and life, and various electrical appliances have become an indispensable part of people's lives. [0003] At present, for electrical equipment such as a display, it is usually necessary to connect to an external power supply through a power adapter. For the monitors currently on the market, when they are in the standby state, the standby power is generally about 0.5W. Therefore, each monitor will consume 4.35kW of electricity per year. When tens of thousands of monitors are in standby state, it not only causes a great waste of energy, but also seriously pollutes the environment. [0004] For the display, its overall standby...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/217H02M1/12
CPCH02M1/12H02M7/217H02M1/123Y02B70/10
Inventor 王牛君董博彦王超
Owner TIANJIN SAMSUNG ELECTRONICS CO LTD
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