差分放大电路原理分析  

Principle Analysis of the Differential Amplifier Circuit

作　　者：朱明[1] 秦佳昕 宋文祥[1] 朱嘉慧 黄蒙 ZHU Ming;QIN Jia-xin;SONG Wen-xiang;ZHU Jia-hui;HUANG Meng(School of Mechatronic Engineering and Automation,Shanghai University,Shanghai 200444,China;University of Toronto,Canada;The HongKong University of Science and Technology,China)

机构地区：[1]上海大学机电工程与自动化学院,上海200444 [2]多伦多大学(加拿大) [3]香港科技大学,中国香港

出　　处：《电气电子教学学报》2021年第3期102-112,共11页Journal of Electrical and Electronic Education

基　　金：国家自然科学基金项目(51377102)。

摘　　要：差分放大电路是“模拟电子技术”教学中的难点。本文系统地分析总结了对称差分放大电路的基本原理,定义了差分放大电路的基础概念,提出了本征放大电路及本征参数等相关概念,分析了三种差分放大电路实例,可以有效帮助学生理解掌握相关理论知识,解决学生构建差分放大电路知识体系的困难。Differential amplifier circuit is a difficult part in the teaching of Analog Electronic Technology.This paper systematically summarizes and analyzes the principle of symmetrical differential amplifier circuit,defines the basic concept of differential amplifier circuit,puts forward the related concepts such as intrinsic amplifier circuit and its intrinsic parameters,analyzes three kinds of differential amplifier circuit examples,effectively helps students understand and grasp theoretical knowledge,and solves the difficulties of students in building differential amplifier circuit knowledge system.

关 键 词：差分放大电路 共模信号 差模信号 

分 类 号：TN722.5[电子电信—电路与系统] TN710.2