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

Three measuring ranges potentiometer

A technology of potentiometer and measuring range, which is applied in the field of three-range potentiometer, which can solve the problems of complex structure of switches and instruments, increasing the number of layers, increasing the volume of instruments, etc., and achieves the effects of simple structure, reduced volume and reduced production cost

Inactive Publication Date: 2009-12-30
方勇
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the two measuring discs are connected, they are connected with the sliding wire disc between the two measuring terminals, so that the brush on the step disc switch is excluded from the measuring circuit, and there is no switching between the resistances on the three measuring shorts, and There will be no deterioration; since the first and second stepping discs have replacement discs, the number of layers of the first and second stepping discs welded with resistance is increased, thereby increasing the volume of the instrument and making the switch and the structure of the instrument becomes complex

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
  • Three measuring ranges potentiometer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0007] In the figure, the measurement panel II is eleven 11Ω end-to-end resistance rings between node A and node B. When the measurement panel II is set to "5" or "6", the brush of the measurement panel II to the node B Between five 11Ω resistors and six 11Ω resistors connected in parallel, the maximum resistance after parallel connection is 30Ω, the resistance value between the other contacts of the measuring panel II and the node B is connected to 30Ω, the 5, 6 contacts and the resistors The corresponding points on the ring are directly connected; when the measuring panel II is set to "4" or "7", between the brush of the measuring panel II and the node B are four 11Ω resistors connected in parallel with seven 11Ω resistors, and the resistance after parallel connection is 28Ω, so contacts 4 and 7 are connected to corresponding points on the resistance ring through 2Ω resistors; when measuring panel II is set to "3" or "8", there are three 11Ω resistors between the brush of mea...

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

This invention relates to a three range potential meter with three measuring tray used for constant voltage measuring. the initiative input tray of this invention is composed by measuring tray and assistant tray; the second step input tray has measuring tray composed by 11X11 omega annular resistance net, and assistant tray composed by ten 0.5 omega resistance; the third tray is double slide wire tray, two measuring tray connect with measuring slide wire by wire, not use switch for switching, remove the impact of variation and thermoelectric force while potential meter measuring, the distinguish ability can reach 0.1 mu V; the invention omits the substitution tray of first and second input trays.

Description

technical field [0001] The invention relates to an instrument for measuring DC voltage. Background technique [0002] At present, for the potentiometer with three measuring discs, in the connection between the three measuring discs, the intermediate disc is generally switched by a switch, which will cause a change in contact resistance and limit the resolution. In order to overcome this problem, a large brush is generally used to increase the contact area, and a silver-copper composite material is used; Patent No. ZL200520101772.0 discloses a new method for solving the variation of switch contact resistance with a potentiometer with three measuring discs. The first and second stepping discs are composed of a measuring disc, a substituting disc and an auxiliary disc. The resistance values ​​on the measuring disc and the substituting disc are the same. Every time a resistance is added to the measuring disc, the substituting disc will reduce the same resistance. , since the fi...

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): G01R17/20G01R19/00
Inventor 方勇张春雷程军李顺定
Owner 方勇
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com