Power adapter

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. ...

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

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