利用DAC芯片和运算放大器构建可编程电流源  

Using DAC Chip and Operational Amplifier to Construct Programmable Current Source

作　　者：肖伟杰 XIAO Wei-Jie(Automation Research Institute of China South Industries Group Corporation,Mianyang Sichuan621000,China)

机构地区：[1]中国兵器装备集团自动化研究所,四川绵阳621000

出　　处：《机电产品开发与创新》2021年第1期32-34,共3页Development & Innovation of Machinery & Electrical Products

摘　　要：设计了一种高精度、可编程电流源。本文阐述了利用DAC芯片、运算放大器、晶体管和匹配电阻构建可编程电流源。论述了电流源的原理,并通过理论分析、软件模拟仿真及实际硬件电路应用都证明方案是合理可行的。A high precision and programmable current source is designed.In this paper,a programmable current source is constructed by using DAC chip,operational amplifier,transistor and matching resistor.This paper discusses the principle of current source,and proves that the scheme is reasonable and feasible through theoretical analysis,software simulation and practical hardware circuit application.

关 键 词：DAC芯片 运算放大器 晶体管 匹配电阻 可编程电流源 

分 类 号：TB114.3[理学—概率论与数理统计]