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

Self-reset ammeter

An ammeter and self-reset technology, applied in the field of detection, can solve the problems of damaged ammeter, simple and unreliable ammeter protection, bent needles, etc., to achieve the effect of simple operation

Inactive Publication Date: 2019-04-16
SUZHOU INST OF INDAL TECH
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to some operational mistakes of the students, the main reason is that the wiring error in the measurement causes the over-range, and even the voltage is measured, which often damages the ammeter, bends the needle or burns the meter.
[0003] In the prior art, the ammeter has technical defects such as complex operation, simple and unreliable ammeter protection, and inadequate protection

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
  • Self-reset ammeter
  • Self-reset ammeter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] A self-resetting ammeter proposed by the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following description and claims.

[0035] see figure 1 , this embodiment provides a self-resetting ammeter, including:

[0036] meter head, protection circuit, first control switch, second control switch, third control switch, current limiting component, shunt resistor group, meter head equivalent resistance, first resistor, second resistor;

[0037] The first control switch is connected in parallel with the current limiting component, and one end of the current limiting component is used as one end of the current to be detected;

[0038] One end of the second control switch is electrically connected to the other end of the current limiting component and one end of the second resistor, and the other end of the second contro...

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 discloses a self-reset ammeter, which comprises a protection circuit, a first control switch, a second control switch, a third control switch and a current limiting assembly, wherein thefirst control switch is connected with the current limiting assembly in parallel and serves as an access terminal of current to be detected so as to control the access and shielding of the current limiting assembly; the second control switch is connected with a measurement loop of the ammeter in series so as to control the normal connection and abnormal connection of the measurement loop; the third control switch is used for the selection of the measurement loop, the measurement loop includes a current value measurement loop and a protection loop; and the protection circuit is used for automatically measuring the current value range of the current to be detected and controlling the first control switch, the second control switch and the third control switch. The self-reset ammeter has thetechnical characteristics of reliable protection, self-reset, simple operation and power loss protection.

Description

technical field [0001] The invention belongs to the technical field of detection, in particular to a self-resetting ammeter. Background technique [0002] For the teaching of courses such as electronic circuits, basic electrical engineering, and electricity in physics, the experimental link is very important. In electrical, electronic, and electrical experiments, ammeters are used. However, due to some operational mistakes of the students, mainly due to the wrong wiring during the measurement, the over-range is caused, and even the voltage is measured, which often damages the ammeter, bends the needle or burns the meter head. [0003] In the prior art, the ammeter has technical defects such as complicated operation, simple and unreliable protection of the ammeter, and inadequate protection. Contents of the invention [0004] The technical purpose of the present invention is to provide a self-resetting ammeter, which has the technical characteristics of reliable protectio...

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): G01R19/00G01R15/08
CPCG01R15/08G01R19/0092
Inventor 李洪群孙岚程雪敏居敏花臧华东
Owner SUZHOU INST OF INDAL TECH
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