摘要
设计制作了一种基于MC14433三位半A/D转换器的数字交流电压表,采用运算放大器和集成多路模拟开关电路CD4052,实现了电压表量程自动切换,构成完备的测量系统。系统可以对0～200V交流电压进行量程自动转换的测量。电路采用纯硬件实现,具有成本低、结构简单和操作方便的优点。
It is designed of digital AC voltage meter based on the three and a half A/D converter MC14433. The voltage meter is used the operational amplifier and integrated multi - channel analog switch circuit CD4052 to realize automatic range switching, it complete measurement system. The system is capable of 0-200 V AC voltage automatic conversion range measurement. It use pure hardware circuit, and has the advantages of low cost, simple structure, convenient operation.
出处
《机械与电子》
2013年第6期26-29,共4页
Machinery & Electronics
关键词
数字交流电压表
电路设计
自动量程转换
自主实验
digital AC voltage meter
circuitdesign
range automatic conversion
independentexperiment
