Power adapter

A power adapter and circuit technology, applied in the field of power supply, can solve the problems of increasing the purchase cost of the adapter, occupying the user's indoor space, and inconvenient electrical equipment, etc., to achieve the effect of enhancing product experience, significant production practice significance, and saving purchase costs

Inactive Publication Date: 2013-04-17
TIANJIN SAMSUNG ELECTRONICS CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, when a user needs to use multiple electrical devices (such as monitors) at the same time, a corresponding number of adapters are required, which greatly increases the purchase cost of the user's adapters, and too many power cords will not only affect the user's daily use. Electrical equipment brings inconvenience, and also takes up valuable indoor space for users, which seriously reduces the user's product use experience

Method used

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Embodiment Construction

[0044] 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.

[0045] see figure 1 , the present invention provides a power adapter, comprising:

[0046] The AC input circuit 101 is connected to the external AC power supply, receives the AC voltage output by the external AC power supply, and then outputs it to the electromagnetic interference filter circuit 102;

[0047]The electromagnetic interference filter circuit 102 is connected with the AC input circuit 101, and is used for filtering electromagnetic interference from the AC voltage output by the AC input circuit 101, specifically filtering conduction interference and radiation interference of electromagnetic interference, and then outputting to the rectification filter circuit 103;

[0048] The rectification filter circuit 103 is connected with ...

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PUM

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Abstract

The invention discloses a power adapter comprising an alternating current input circuit, an electromagnetic interference filter circuit, a rectifier filter circuit, a pulse width modulation circuit, a transformer, a first rectifier filter circuit and a second rectifier filter circuit; the alternating current input circuit is connected with an external alternating current power supply; the electromagnetic interference filter circuit is connected with an alternating current input circuit; the rectifier filter circuit is connected with the electromagnetic interference filter circuit; the pulse width modulation circuit is connected with the rectifier filter circuit; the transformer is connected with the pulse width modulation circuit; the first rectifier filter circuit is respectively connected with the transformer and a first voltage output end Vout1; the first voltage output end Vout1 is connected with first electric appliance equipment; the second rectifier filter circuit is respectively connected with the transformer and second voltage output end Vout2; and the second voltage output end Vout2 is connected with second electric appliance equipment. According to the power adapter disclosed by the invention, double-circuit voltage independent output can be realized, so that the normal working requirements of two pieces of electric appliance equipment are met, the adapter purchasing cost of a user and the valuable indoor space of a user are saved.

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, various electrical equipment usually need to be connected to an external power supply through a power adapter, and usually each electrical equipment needs to be equipped with a power adapter for external power supply. [0004] Therefore, when the user needs to use multiple electrical devices (such as monitors) at the same time, a corresponding number of adapters are required, which greatly increases the purchase cost of the user's adapters, and too many power cords will not only affect the user's daily use. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/04
Inventor 王超李明桂兰聪
Owner TIANJIN SAMSUNG ELECTRONICS CO LTD
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