MF500型万用表直流电流档电路实验设计  

Experiment design of MF500 multimeter direct current circuit

作　　者：潘志栋[1] 

机构地区：[1]吕梁学院矿业工程系,山西离石033000

出　　处：《实验室科学》2015年第6期39-41,共3页Laboratory Science

基　　金：吕梁学院教学改革项目"面向矿山监控专业方向的课程体系构建与教学过程研究"(项目编号:JYZD201407)

摘　　要：学习MF500型万用表工作原理的最好方式是动手实现其功能电路。然而,由于万用表设计选用了非商业标准电阻,导致学习者不能很方便地通过其电气原理图实现一款属于自己的物美价廉的万用表。通过对模拟万用表功能电路的设计先给出一个数学模型,并在此基础上以Matlab软件为工具,以实验调试为手段,对500型万用表直流电流档的功能电路参数进行优化选择,以满足实验需要。该思路可扩展到万用表其他功能模块的实验设计中。An effective way to learn MF500 multimeter working principle is to start and realize its function circuit by means of some experimental materials. However,the adoption of no commercial standard resistors in the MF500 multimeter leads the learner cannot easily through the electrical principle diagram to realize a high quality and inexpensive multimeter. In this paper,the analog multimeter function circuit design is first given a mathematical model. And on this basis,using Matlab software as the tool,and using the experimental debugging as a method to optimize MF500 multimeter direct current function of circuit parameters,in order to meet the needs of the experiment. The method can be used in a multimeter experiment design of other modules.

关 键 词：万用表 直流档 实验设计 

分 类 号：TP31[自动化与计算机技术—计算机软件与理论]