自动化专业——毕业设计——数字可调稳压电源设计毕业论文.doc

毕业设计报告(论文) 题目: 数字可调稳压电源设计 所 属 系 电子工程系 专 业 　 自动化 学 号 XX 姓 名 XX 指导教师 XX 起讫日期 2010.3-----2010.6 　 设计地点 东南大学 毕业设计报告（论文）诚信承诺 本人承诺所呈交的毕业设计报告（论文）及取得的成果是在导师指导下完成，引用他人成果的部分均已列出参考文献。如论文涉及任何知识产权纠纷，本人将承担一切责任。 学生签名: 日 期  基于AT89C51单片机的数字可调稳压电源设计 摘 要 随着现代科技的发展，特别是自动化技术的发展，传统意义上许多由模拟电路或数字电路来实现的系统现在我们都可以用微控制器来实现。由于微控制器控制功能强、市场需求大，因而反而价格低廉。这种设计理念正渐渐为人们所接受，并广泛的应用于各个领域。本系统以 AT89S52 单片机作为系统的核心，由D/A数字模拟转换模块、按键、LED显示等模块组成一个数控电源。该系统实现了 输入交流电压： 220V，输出直流电压：范围0 ~+24V，步进1V，纹波不大10mV；输出电流：500mA“＋”、“－”DAC0832，让它转化为模拟量电流输出，通过运算放大器将这模拟量转化为相应的电压，这电压经过放大后控制ZTX45的控制端，从而实现输出电压的控制。 关键词：AT89S52 单片机 数控电源 D/A 直流电源  Intelligent Water Level Detection Design System Based on AT89S52 MCU Abstract With the development of modern science and technology, in particular the development of automation technology, many systems that is builded by analog circuits or digital circuits in traditional sense can be now achieved by using micro-controller. Microcontroller has a great advantage in control abilities. so it is easy to think that it has a strong market demand, these makes it more cheaper and then has a greater competitiveness compared to other design methods. This design concept was gradually accepted and widely used in various fields. The AT89S52 SCM is the heart of the NC Power, which is made up of Digital-analog converter module, key module and LED display module. The Output voltage of the system is between 0Vand +24V, Stepped by 1V, the ripple is not more than 10mV, and the output current is 500mA, The value of Output voltage is displayed by Digital control, and the stepping change in output voltage is controlled by +and -keys. When you press the button of the input module, the SCM will have an input. On the one hand, the SCM transfers the figures into the display module, which display the figures, on the other hand, the SCM transfers the rest informatio