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A power adapter and electronic equipment

A technology of power adapter and AC power supply, which is applied in the electronic field, can solve the problems that the voltage stabilizing capacitor cannot be discharged in time, the power adapter is damaged, etc., and achieve the effect of avoiding electric shock damage and improving stability

Active Publication Date: 2020-03-10
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The embodiment of the present invention provides a power adapter and electronic equipment to solve the problem in the prior art that the power adapter is damaged by electric shock after the AC power is disconnected because the voltage stabilizing capacitor inside the power adapter cannot be discharged in time

Method used

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  • A power adapter and electronic equipment
  • A power adapter and electronic equipment
  • A power adapter and electronic equipment

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Embodiment Construction

[0039] In order to make the purpose, technical solutions and advantages of the present invention clearer, the specific implementations of the power adapter and the electronic device provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the preferred embodiments described below are only used to illustrate and explain the present invention, but not to limit the present invention. And the embodiments in this application and the features in the embodiments may be combined with each other without conflict.

[0040] Generally, a power adapter is a power supply conversion device for electronic devices, especially small portable electronic devices. Its working principle is to convert AC input to DC output, and is widely used in mobile phones, PDAs, notebook computers, security cameras, set-top boxes, routers, light bars, massagers and other electronic equipment. For example, the...

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PUM

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Abstract

The invention discloses a power adapter and electronic equipment. When the AC power supply is powered on, the voltage of the AC power supply is rectified by a rectifier unit and then output, and the voltage output by the rectifier unit is stabilized and filtered by a voltage stabilizing capacitor; The output unit transforms the voltage regulated and filtered by the stabilizing capacitor according to a preset ratio and provides it to the voltage output terminal, so that the power adapter converts the voltage of the AC power supply into the DC voltage required by the load at the voltage output terminal. When the AC power supply fails, that is, the power adapter disconnects the AC power supply, the discharge control unit can control the voltage stabilizing capacitor to discharge in time, so that the residual voltage of the voltage stabilizing capacitor can be reduced to zero, thereby improving the stability of the power adapter and avoiding An issue where the power adapter was damaged by electric shock after disconnecting from AC power.

Description

technical field [0001] The present invention relates to the field of electronic technology, in particular to a power adapter and electronic equipment. Background technique [0002] With the rapid development of electronic information technology, there are more and more types of electronic devices, such as mobile phones, PDAs (Personal Digital Assistant, PDA), notebook computers and so on. At present, the voltage of the AC power source is generally converted into a DC voltage through a power adapter to directly supply power or charge the electronic device. The power adapter is generally composed of a shell, a rectifier circuit, a transformer, a voltage regulator capacitor and other components. Among them, the voltage stabilizing capacitor is used to stabilize the voltage after rectification by the rectifier circuit. However, after the power adapter is disconnected from the AC power supply, since the voltage stabilization capacitor cannot be discharged in time, the residual ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/217H02M1/32H02M3/155
CPCH02M1/32H02M3/155H02M7/217H02M1/322
Inventor 陈善彬
Owner BOE TECH GRP CO LTD