一种多级小信号放大器实验板的电路设计  

Circuit Design of Small Signal Amplifier Experimental Board

作　　者：张慧敏[1] 

机构地区：[1]常州信息职业技术学院电子与电气工程学院,江苏常州213164

出　　处：《常州信息职业技术学院学报》2014年第6期13-15,共3页Journal of Changzhou College of Information Technology

摘　　要：设计一种多级小信号放大器实验板,介绍了电路的工作原理并对其性能进行了相关测试。本实验板作为高职院校模拟电子技术课程教学载体使用,实践证明教学效果良好。主要电路包括三级放大器,前两级放大器为共射接法,第三级为共集接法。电路中设置了多个开关,供学习者在不同状态下测试相关数据和观察实验现象,理论联系实际进行分析,直观深入地理解负反馈及电容对放大器性能的影响,提高学生分析和解决问题的能力。This paper introduces the design of small signal amplifier experimental board, and the circuit working principle. Performance is also tested. As the teaching carrier for high vocational colleges＇ simulation electronic technology course, this experimental board brings good teaching result. The main circuit includes three stage amplifiers. The first two are common emitter connection, and the third is common collector connection. There are some switches in circuit, which provide learners to test data and observe experimental phenomena in different situations. In this way, students can understand the negative feedback and capacitance＇s influence on amplifier performance and improve students＇ ability to analyze and solve problems.

关 键 词：放大器 实验板 电路设计 

分 类 号：TN02[电子电信—物理电子学]