基于ICL7107器件的量程自切换数字电压表的设计  

Design of Automatically Scope Switch Digital Voltmeter Based on ICL7107 Device

作　　者：包本刚[1] 

机构地区：[1]湖南科技学院,湖南永州425100

出　　处：《中国仪器仪表》2007年第2期32-35,共4页China Instrumentation

基　　金：湖南省教育厅基金(项目编号:04C512)

摘　　要：本设计采用集成芯片ICL7107作为数字电压表的A／D转换及锁存和译码模块，使得电路具有设计简单、集成度及可靠性高的特点。该系统设计了自动切换量程功能，能够实现0～199mV、0～1．99V、0～19．99V、0～199．9V、0～1999V，共5个量程电压值的测量。本系统做成了电路板，进行了测试，得到了良好的测试结果。The design uses integration CMOS chip ICL7107 as the A/D transform and lock save and coding module of a digital voltmeter to make the circuit easy design, high integration and high reliability. The system has been designed with automatically scope switch, that can measure in all five scopes of pressure value： 0-199mV,0-1.99V,0-I9.99V, 0-199,9V,0-1999V. And that, the system has been build in a circuit board, having been tested, and has got a good result.

关 键 词：ICL7107 数字电压表 A/D转换 量程 系统测试 

分 类 号：TM933.22[电气工程—电力电子与电力传动]