CAJ | 학술논문

数字化电源的发展，已经形成了一门综合性的学科。在现代化工农业生产、通信、电子仪器仪表、国防事业以及高新技术的装备中，高可靠性、高效率的电源，是不可缺少的设备之一。该设计采用89C2051单片机作为控制单元，利用X9241数字电位器、模/数转换器与恒流源电路部分构成数控可调的恒流电流源，系统中主要应用了数字电位器，它的输出电压作为恒流源部分的参考电压，该电压通过电压跟随器送入恒流源控制电路，从而实现恒流的输出。输出电流的给定由输入键盘来设定，89C2051通过I2C总线方式与X9241实现数据的传输。显示采用4位LED数码管，显示驱动采用软译码方式。
수자화전원적발전，이경형성료일문종합성적학과。재현대화공농업생산、통신、전자의기의표、국방사업이급고신기술적장비중，고가고성、고효솔적전원，시불가결소적설비지일。해설계채용89C2051단편궤작위공제단원，이용X9241수자전위기、모/수전환기여항류원전로부분구성수공가조적항류전류원，계통중주요응용료수자전위기，타적수출전압작위항류원부분적삼고전압，해전압통과전압근수기송입항류원공제전로，종이실현항류적수출。수출전류적급정유수입건반래설정，89C2051통과I2C총선방식여X9241실현수거적전수。현시채용4위LED수마관，현시구동채용연역마방식。
The digital power supply has formed a comprehensive discipline. The power supply with high reliability and high efficiency is one of the necessary equipments in the modern industry and agriculture production,communication,electronic in-strumentation,national defense and high-tech equipments. 89C2051 single chip microcomputer is used as the control unit in this design. The constant current source with numerical control and adjustability is made up by X9241 digital potentiometer,A/D converter and constant current source circuit. The system is applied mainly to the digital potentiometer. Its output voltage is taken as the reference voltage of the constant current source. The voltage is sent into constant current source control circuit through a voltage follower to achieve the constant current output. The output current is set by the keyboard. The data transmission of 89C2051 is realized by I2C bus and X9241. The four-bit LED nixie tube is adopted for display. The soft decoding mode is em-ployed for display drive.