›› 2012, Vol. 25 ›› Issue (10): 60-.

• 论文 • 上一篇    下一篇

基于微处理器的程控电流源设计

崔芳,郭玉会   

  1. (1.保定供电公司 通信公司,河北 保定 071600;2.华北电力大学 电子与通信工程系,河北 保定 071003)
  • 出版日期:2012-10-15 发布日期:2012-11-29
  • 作者简介:崔芳(1973—),女,本科。研究方向:配电网单相接地故障定位。郭玉会(1986—),女,硕士研究生。研究方向:配电网故障定位。

Microprocessor Based Programmable Current Source Design

 CUI Fang, GUO Yu-Hui   

  1. (1.Communications Company,Baoding Power Supply Company,Baoding 071600,China;
    2.Department of Electronics and Communication Engineering,North China Electric Power University,Baoding 071003,China)
  • Online:2012-10-15 Published:2012-11-29

摘要:

介绍了一种程控电流源的设计方法。该程控电流源输出电流范围为200~2 000 mA,电流频率为50 Hz,根据按键可控制电流的增减,其步进为1 mA。文中采用AT89C51作为控制器输出电流控制字,经过数模转换芯片MAX539进行数模转换以控制运放。仿真结果表明,该设计具有控制精度高,制作简单等优点。

关键词: 程控, 电流源, 电流控制字

Abstract:

This paper describes the design of a programmable current source.The output of the programmable current source ranges from 200 mA to 2000 mA,and current frequency is 50 Hz.The keys can increase or decrease the value of current,and the step is 1mA.AT89C51 is used as controller outputs current control words to control the op amp and chip MAX539 is used for digital-analog conversion.The design has the advantages of high control precision and easy production.

Key words: programmable;current source;current control word

中图分类号: 

  • TN86