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Power protection circuit and control method thereof

A technology of power supply protection and control method, which is applied in the direction of emergency protection circuit device, protection reacting to overvoltage, circuit device, etc., and can solve problems such as failure of normal operation and damage of post-stage electronic devices

Inactive Publication Date: 2017-05-24
KUSN INFOVISION OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a power supply protection circuit and its control method, which can solve the problem that the subsequent electronic devices cannot work normally or even be damaged when the output voltage of the power supply is not within the normal operating voltage range of the subsequent electronic devices

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  • Power protection circuit and control method thereof

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Embodiment Construction

[0018] The present invention is described below based on examples, but the present invention is not limited to these examples. In the following detailed description of the embodiments of the present invention, some specific details are described in detail, and those skilled in the art can fully understand the present invention without the description of these details. In order to avoid obscuring the essence of the present invention, well-known methods, procedures, and flow charts are not described in detail.

[0019] In the various figures, identical elements are indicated with similar reference numerals. For the sake of clarity, various parts in the drawings have not been drawn to scale. Also, some well-known parts may not be shown in the drawings. The flowcharts and block diagrams in the accompanying drawings illustrate the possible system framework, functions and operations of the systems, methods, and devices of the embodiments of the present invention, and the blocks an...

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Abstract

The invention discloses a power protection circuit and a control method thereof. The power protection circuit comprises first to third switch tubes and first to fifth resistors. The power protection circuit is used for sending an input voltage to a second end as an output voltage from a first end. The invention also discloses a control method for the power protection circuit. According to the control method for the power protection circuit, the first to third switch tubes are respectively controlled to switch on / off according to the magnitude of the input voltage, so as to control the output of the second end of the power protection circuit.

Description

technical field [0001] The invention relates to the field of electronic circuits, in particular to a power protection circuit and a control method thereof. Background technique [0002] In the production process of electronic devices, test fixtures are used to test their performance to ensure the quality of devices. When using the test fixture to test the electronic device, the test fixture power supply provides an input voltage for the electronic device to be tested. However, the existing technology cannot guarantee that the output voltage of the power supply of the test fixture is always kept within the normal operating voltage range of the electronic device to be tested. When the output voltage of the power supply of the test fixture is lower than the minimum normal working voltage of the electronic device under test, the subsequent system cannot work normally; And damage, and further cause damage to the rear system. Contents of the invention [0003] The technical p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/20H02H3/24
CPCH02H3/207H02H3/24
Inventor 蒋敏刘胜利
Owner KUSN INFOVISION OPTOELECTRONICS