放大电路频率响应的类比教学方法  

Analogical Teaching Method of Frequency Response of Amplifier Circuit

作　　者：朱嘉林[1] Zhu Jialin(Electronic Information and Control Experimental Teaching Center Beijing Information Science and Technology University, Beijing, 100101,China)

机构地区：[1]电子信息与控制实验教学中心北京信息科技大学,北京100101

出　　处：《科技资讯》2017年第20期188-191,193,共5页Science & Technology Information

摘　　要：放大电路频率响应教学内容是模拟电子技术课程的重要内容,大部份学生在理解这一部分内容时都存在着困难。该文针对放大电路频率响应的教学方法进行探讨;提出了先计算分析电容电阻构成的分压电路的频率响应,然后过渡到放大电路频率响应计算分析的类比教学方法,从而使学生深入了解放大电路中产生频率响应的原因,同时通过简单计算放大电路中耦合电容、旁路电容,以及晶体管等效电容所在回路的时间常数,通过类比得到放大电路的频率响应,降低放大电路频率响应计算分析的复杂程度,使教学事半功倍。Amplifier circuit frequency response teaching content is an important part of analog electronic technology courses,there are difficulty formost students in the understanding of this part of the content In this paper,the teaching method ofthe frequency response of the amplifier circuit is discussed in this paper.At First,The frequency response of the voltagedivider circuit composed of the capacitor resistance is analyzed and calculated,and then the analogical teaching method ofthe frequency response calculation of the amplifier circuit is transitioned,so that the students can understand the amplificationcircuit,and the frequency response of the amplifier circuit is obtained by simply calculating the time constant of the couplingcapacitor,the bypass capacitor and the circuit of the equivalent capacitance of the transistor.The frequency response of theamplifier circuit is obtained by analogy,and the complexity of the frequency response calculation and analysis of the amplifiercircuit is reduced.It was achieved with minimum fuss and maximum efficiency.

关 键 词：类比方法 频率响应 放大电路 电压放大倍数 

分 类 号：G613[文化科学—学前教育学]