摘要
本文设计的电压测试架，采用AD0809高精度、逐次比较型A／D转换器、AT89S52单片机实现八路电压测试并能实现声光报警功能。该电路设计简单实用，可扩展性强。它可以实现对输入电压范围灵敏快速的判定,所以在工厂车间的产品检测上是非常实用的。
This article designs the voltage test stand, adopts AD0809 high precision, successive comparison type A / D converter, AT89S52 one-chip computer realizes the eight-way voltage test and can realize the audible and visual alarm function. The circuit design is simple and practical, scalable. It can determine the input voltage range sensitive and fast, so in the factory floor product testing is very useful.
