虚地输出式高精度数控电源设计  

Virtual ground output type high-precision NC power supply design

作　　者：刘燕妮 隋俊杰[2] 李欣[2] 

机构地区：[1]上海711所军事代表室,上海200011 [2]哈尔滨工程大学自动化学院,黑龙江哈尔滨150001

出　　处：《应用科技》2012年第2期59-61,共3页Applied Science and Technology

基　　金：国家自然科学基金资助项目(60704018)

摘　　要：为了解决传统电源输出电压幅度不高的问题,设计了一款高精度、高质量的直流稳压电源——虚地输出式数控电源.它采用ATmega8单片机和高精度16位DA转换芯片——DAC8532进行程序控制,通过差分放大电路、运算放大电路和设置不同的参考点来进行电压放大和输出,并通过负反馈来提高电压输出精度.该设备能够产生较高的输出电压,具有安全方便、自动快捷等优点.A new type of quality and high-precision DC power supply based on virtual ground NC power supply is proposed. It overcomes the difficulties of low output voltage in the conventional power supply. It uses chip microcomputer- ATmega8 and 16-bit D/A converter -DAC8532 to control the program. The amplification and outputting are carried out by using differential amplifier circuit, operational amplifier circuit and setting different reference points. At the same time, it improves the precision of output voltage by negative feedback. It can provide a high output voltage. In addition, it is safe, convenient, automatic and fast.

关 键 词：直流电源 虚地 ATMEGA8 数控 

分 类 号：TM13[电气工程—电工理论与新技术]