| 数字万用表测电阻功能扩展研究 |
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| 引用本文： | 吴文全. 数字万用表测电阻功能扩展研究[J]. 电子测量技术, 2001, 0(3): 9-11 |
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| 作者姓名： | 吴文全 |
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| 作者单位： | 海工大电子工程学院 |
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| 摘 要： | 文中以通用的3位半数字万用表（DT890B）为例，对数字万用表测量电阻的功能进行扩展研究，使通用的数字万用表能进行在线测量、对极大和极小电阻的测量，电路的改造也较简单，并对改造后数字万用表的测量误差进行详细的研究分析。
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| 关 键 词： | 电隔离 误差分析 数字万用表 电阻测量 |
On the Function Expansion of Digital Multimeter in Measuring Resistance |
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| Wu Wenquan. On the Function Expansion of Digital Multimeter in Measuring Resistance[J]. Electronic Measurement Technology, 2001, 0(3): 9-11 |
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| Authors: | Wu Wenquan |
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| Abstract: | In this paper, taking a usual 3 1/2DMM for example, We carry on the study of the functional expasion of DMM in measuring resistance, which makes the usual DMM be able to do the measure on line and the measure of the maximun or minnmum resistance. The reformation of circuit is simple too. Furthermore we analyse the measuring error of the reformed DMM in detail. |
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| Keywords: | ratio electric isolation error analysis |
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