Unlock instant, AI-driven research and patent intelligence for your innovation.

protective device

A protection device and protector technology, applied in the field of communication, can solve the problems of low reliability, reduced protection circuit area and large size of the protection device, and achieve the effects of improving reliability, improving long-wave lightning protection capability, and reducing the area of ​​protection circuit

Active Publication Date: 2017-08-18
HUAWEI TECH CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The embodiment of the present invention provides a protection device to solve the problems of the existing protection device such as large volume, low reliability, and poor long-wave lightning protection effect. Lightning capability, and reduce the protection circuit area of ​​the protection device, but also improve the reliability of the protection device

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • protective device
  • protective device
  • protective device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0035] The invention discloses a protection device, which applies a switcher and a first one-way device in series to a DC power supply, utilizes the first one-way device's one-way conduction and low residual voltage characteristics to realize differential mode protection from the negative pole to the positive pole of the power supply, and significantly reduces the The shunting of the small post-stage circuit; the freewheeling interruption of the switch is realized by using the reverse or controllable cut-off characteristics of the first one-way device. The protection device circuit disclosed in the present invention can effectively solve the problems of large volume, low reliability, and poor long-wave lightning protection effect in the prior art, thereby realizing the differential mode protection of a large-scale power...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The embodiment of the present invention relates to a protection device, which includes: a switch and a first one-way device; one end of the switch is connected to the negative pole of the power supply or connected to the positive pole of the power supply; one end of the first one-way device is connected to the switch The other end of the switch is connected in series; when one end of the switch is connected to the negative pole of the power supply, the other end of the first one-way device is connected to the positive pole of the power supply; when one end of the switch is connected to the positive pole of the power supply, the first The other end of the one-way device is connected to the negative pole of the power supply; when the power supply has a negative surge voltage or current, the first one-way device conducts and shunts the surge current with the switch to prevent the surge current from entering the protected equipment. Therefore, the protection device realizes the differential mode protection for a large-scale power supply, improves the long-wave lightning protection capability, and reduces the area of ​​the protection circuit.

Description

technical field [0001] The invention relates to the technical field of communications, in particular to a protection device. Background technique [0002] The power supply of communication equipment is often disturbed by overvoltage, which is generated by direct lightning strike or induction lightning, or power frequency overvoltage and operating overvoltage generated inside the power supply system. Overvoltage is very harmful and directly threatens the safety of people and communication equipment. Therefore, it is very critical to use overvoltage protection devices in the power supply of communication equipment, so as to reduce the overvoltage to the allowable voltage range of communication equipment. [0003] At present, if the power supply of communication equipment adopts low-level differential-mode protection, the low-level differential-mode protection circuit is a primary protection circuit. Add a varistor (Metal Oxide Varistor, MOV) between the positive and negative ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02H9/02H02H3/08
CPCH02H9/02G05F1/613
Inventor 王庆海丁学英
Owner HUAWEI TECH CO LTD