摘要
本文介绍了一种低纹波高精度数字电流源,通过扩流晶体管、高精度运算放大器反馈电路和数字PI调节器闭环控制实现了输出电流纹波小、精度高。该电流源控制方便、显示数据量大,性能稳定、输出功率易于扩展。
This paper introduces the digital current source with low ripple and high precision.Low ripple and high precision are accomplished by current-enlarging transistor and feedback circuit of precise operational amplifier and digital PI closed-loop control. The current source is used conveniently, of which the LCD displays more data and the output power is convenient to be enhanced, of which the performance is stable.
出处
《微计算机信息》
北大核心
2007年第02S期206-207,153,共3页
Control & Automation
基金
教育部科学技术研究重点项目(项目编号:204010)
关键词
纹波
精度
反馈控制
数字PI调节器
ripple,precision,feedback control,digital PI controller
