摘要
恒流源在实际工程中是一种用途广泛的检测设备。以AT89S52作为核心控制模块,通过D/A变换实现输出电流可调,采用精密运算放大器和达林顿管进行扩流,设计出能精确输出20mA^2000mA数控可调直流恒流源。
constant current source is a widely used device in engineering. This design, using AT89S52 as the controlling core, adjusting the output by D/A conversion, and amplifying the current by precise operational amplifier and Darlington transistor, can give a output current that can be precisely adjusted from 20mA to 2000mA.
出处
《九江职业技术学院学报》
2010年第1期27-28,共2页
Journal of Jiujiang Vocational and Technical College
