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

High-stability DC large current source

A high-current, constant-current source technology, applied in the direction of measuring electricity, measuring electrical variables, and components of electrical measuring instruments, can solve problems such as difficult to achieve high stability and precision, and reduce voltage references and sampling devices Affect, improve output stability, effect of improving stability

Active Publication Date: 2016-04-27
BEIJING DONGFANG MEASUREMENT & TEST INST
View PDF10 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the current of a general DC current source is large, it is difficult to achieve high stability and precision due to many factors such as sampling and heat dissipation. large power supply

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
  • High-stability DC large current source
  • High-stability DC large current source
  • High-stability DC large current source

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and implementation methods.

[0016] see figure 1 , the structure diagram of the high-stability DC high-current source of the present invention, including adjustment tube, sampling circuit, current sampling resistor, reference voltage, amplifier and auxiliary power supply, load, power control and other main modules. Among them, the output current is converted into a voltage through the sampling resistor, and then compared with the amplified reference voltage, the compared error is adjusted by the adjustment tube to adjust the output current, and finally the output current is adjusted to the set value and remains unchanged. The power control module and the load dynamic adjustment circuit can dynamically adjust the tube pressure drop on the adjustment tube according to the load...

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 invention provides a DC large current source which comprises a regulation tube, a sampling circuit, a current sampling resistor, a reference voltage, an amplifier, an auxiliary power supply and a load. The DC large current source is characterized by that the DC large current source also comprises a power control module, the tube voltage drop in the regulation tube is adjusted according to a load condition, the voltage drop is reduced when the load is small, and the regulation tube working voltage is gradually increased when the load resistance is large.

Description

technical field [0001] The technology described in this disclosure generally relates to the field of rechargeable battery technology. Background technique [0002] Many fields use DC current sources and have very high requirements for the stability of DC current sources, such as satellite zero magnetic test system, electrical measurement, etc. In the satellite zero magnetic test, the stability of the DC current source directly affects the performance of the test system. In the electrical measurement process using the DC current source, the stability of the applied DC current source directly affects the measurement results. Therefore, it is necessary to develop a DC current source with high stability. When the current of a general direct current source is large, it is difficult to achieve high stability and precision due to many factors such as sampling and heat dissipation. Great power. Contents of the invention [0003] The purpose of the present invention is to propos...

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): G01R1/28
CPCG01R1/28
Inventor 王书强宋佳赟潘攀刘碧野
Owner BEIJING DONGFANG MEASUREMENT & TEST INST
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