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数字万用表使用及常用电子元器件参数的识别与检测 华中科技大学工程实训中心 PowerPoint PPT Presentation


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数字万用表使用及常用电子元器件参数的识别与检测 华中科技大学工程实训中心. 一、数字万用表的使用. 1 、概述 ( 1 )采用数字化测量技术 将被测电量转化成电压信号,并以数字形式加以显示。显示结果一目了然,克服了模拟式(即指针式)万用表人为的测量误差(例如视差)。. (2 ) 、显示位数及显示特点 判断数字仪表位数有两条原则: 第一,能够显示从 0~9 所有数字的位是整数位; 第二,分数位的数字是以最大显示值中最高位的数字为分子,而用满量程时最高位的数字作分母。.

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数字万用表使用及常用电子元器件参数的识别与检测 华中科技大学工程实训中心

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