广东交通职业技术学院毕业设计论文题目：单片机控制可调直流稳压电源的设计姓名：学号：专业班级：2013/12/1广东交通职业技术学院广东交通职业技术学院内容摘要本文介绍了一种基于单片机的直流稳压电源设计方案，该系统由初步整流稳压部分、单片机控制部分、DAC、稳压部分和显示部分组成。该稳压电源可步进调节、实时显示，弥补了传统稳压电源的不足，其核心技术是通过单片机控制数模转换来改变其后稳压模块的输出。利用单片机控制数模转换芯片DAC0832输出电压作为稳压电路的参考电压；单片机通过键控改变DAC0832的输出电压，作为参考电压发生改变，稳压电路调整管的压降也会相应地发生变化，从而改变输出电压。目录1.引言·····························································42.设计任务及要求···················································42.1设计目的····················································42.2设计内容····················································43．电源设计方案及论证··············································53.1设计方案分析················································53.2D/A数字模拟转换模块········································63.3稳压模块····················································63.4按键控制模块················································73.5显示模块····················································73.6电源模块····················································74．电源系统硬件介绍················································72/27广东交通职业技术学院4.1单片机模块··················································74.1.1单片机介绍··············································74.1.2单片机外围电路介绍·····································94.2D/A模块····················································104.2.1DAC0832工作原理·······································104.2.2DAC0832及其外围电路···································114.2.3D/A转换的计算·········································124.3LED数码管显示模块··········································144.3.1数码管结构·············································144.3.2数码管工作原理·········································144.3.3数码管连接电路图·······································154.4直流电源···················································154.4.1整流滤波、初步稳压······························...
