Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Power source short-circuit protector

A technology for protection device and power supply short circuit, applied in the field of power supply, which can solve the problems of power supply side loss, power supply damage, fuse burnt fuse, etc.

Inactive Publication Date: 2003-02-26
ZTE CORP
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above short-circuit protection measures can basically complete the function of protecting the power supply, but it will cause certain damage to the power supply itself or the party that is supplied with the power supply. For example, when a fuse is used as short-circuit protection, the fuse will be burned; Fang has losses, etc.

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
  • Power source short-circuit protector
  • Power source short-circuit protector
  • Power source short-circuit protector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] refer to figure 1 , the power supply is composed of a power supply module 2 for providing electric energy, a power protection circuit 1 and a power output circuit 3. In a specific embodiment, the power module adopts PS-65-5 (ACDC: 220V-5V), Q-120B (ACDC: 220V-5V, ±12V). The power output circuit is composed of fuse (RF-1-20-3.15A), resistor (RC05-1 / 10W-390Ω), capacitor (CA45-D-10V) and diode (BZX55C4V3ST).

[0019] refer to figure 2 , 3 The power supply protection circuit is composed of a comparison control circuit 11 and a switching control circuit 12. In the switching control circuit 12, the input terminal of the switching circuit 121 is connected to the output terminal of the power supply module 2, and the output terminal is connected to the comparison control circuit 11 and the power supply output circuit 13. The input end of the execution switching circuit 121 is connected with the switching matching circuit 122 controlled by the control switching conduction cir...

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 short-circuit protector for power source includes a comparing control circuit and a change controlling circuit. In the change controlling circuit, the change executing circuit has input connected to the output of the power source module and the output connected to the inputs of the comparing control circuit and the power source output circuit. The state detecting and controlling circuit of the comparing control circuit picks up signal from the output of the change executing circuit, and the output together with the output of the reference circuit is connected to the input of the output circuit. When being short-circuited, the power source is cut off automatically to protect both the power source and the powered part. In addition, there can be alarm function.

Description

technical field [0001] The invention relates to the field of power supply technology, in particular to the protection circuit technology in the power supply technology. Background technique [0002] In many fields such as industrial automation control, medical equipment, communication, aerospace and daily household appliances, the power supply provides the power for all electronic products; the short-circuit protection of the power supply is an important means to ensure the reliability of electronic products. An important direction for various power supply manufacturers to explore. At present, many manufacturers realize the short-circuit protection of the power supply by adding a fuse or a resettable fuse or a thermistor to the output circuit of the power supply, such as the United States Tencent Technology Company, Shenzhen Heda Zhongqitong Power Technology Co., Ltd. and other power supplies produced. Constant current protection or voltage limiting and current limiting pr...

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 Applications(China)
IPC IPC(8): H02H3/08
Inventor 章利勇谢海姚发定
Owner ZTE CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com