基于C8051F020单片机的数控直流电源设计  

Design of Digital Controlled DC Source Based on C8051F020

作　　者：王越[1] 

机构地区：[1]青岛大学,山东青岛266071

出　　处：《工业控制计算机》2018年第2期127-128,130,共3页Industrial Control Computer

摘　　要：介绍了一种高稳定性数控直流电流源的设计方案,该电流源以片内集成数模、模数转换系统的C8051F020单片机为控制核心,配合运算放大器与晶体管构成的恒流源电路,通过按键设置输出电流并显示在LCD屏上,输出的实际电流经采样电阻反馈到单片机并显示在LCD屏上,与设置值进行比较,通过程序调整输出值使之与设置值一致。该电流源可在负载为1~10Ω时输出1~2000m A最小步进值为1m A的稳定电流,人机界面友好,结构精简,具有一定的实用参考价值。A design of digital controlled high stability DC current source is introduced,which is basis of C8051F020.With the operational amplifier and transistor composed of constant current source circuit,it can set the output current and display on the LCD screen.The output of the actual current through the sampling resistor feedback to the single chip computer and displayed on the LCD screen.The current detected will compare with the setting value,and they will be justified to be the same by the program.The current source can output stable current of 1~2000mA,with minimum step value of 1mA.

关 键 词：数控 单片机 直流电流源 

分 类 号：TN86[电子电信—信息与通信工程] TP368.12[自动化与计算机技术—计算机系统结构]