直流数控可调稳压电源的设计  

Design of numberical control adjustable DC power supply

作　　者：李桂平[1] 黄有全[1] 

机构地区：[1]长沙民政学院电子信息工程系,湖南长沙410004

出　　处：《电子设计工程》2009年第7期76-77,80,共3页Electronic Design Engineering

摘　　要：采用AT89C51单片机作为数控模块核心,以通过按键调节可输出0～18 V连续可调电压,电压调节分粗调与细调,粗调步进电压为1 V,细调步进电压为0.05 V,液晶屏显示输出电压。稳压输出电路含过流检测电路,通过中断实现软件过流保护和报警。测试结果表明,该电源满足设计要求,可用于实验教学和工程应用中。The design uses AT89C51 single-chip as the core of numerical control module,through the keys can adjust the output voltage from 0 to 18V continuously,voltage regulation contains rough-turn and fine-tune,rough-tune step voltage is 1V, fine-tune step voltage is 0.05V,the LCD display the output voltage.The output voltage regulation circuits contain over-current detection eirouits,overcurrent protection and alarm are realized through the interruption.Test result shows that the DC power supply meets the design requirement and is applied in experiments and engineering practices.

关 键 词：AT89C51 数控 液晶显示 按键处理 

分 类 号：TP368[自动化与计算机技术—计算机系统结构]