收压缩制紧缩电路频比值特点的叛逆向展发式教

  韩跃对等

  uedbet赫塔菲官网: 仿造电儿子技术; 收压缩制紧缩电路; 频比值特点; 教养学方法

  中图分类号: TN722?34; G642 文件标注识码: A 文字编号: 1004?373X(2014)11?0145?03

  Abstract: Amplifier frequency response is one of the teaching difficult points in the course of “Analog Electronic Technology Foundation”. The teaching ways and means for this section will have direct impact on students comprehension towards amplifiers amplifying characteristic. Based on the mainstream teaching materials both at home and abroad, and taking the single transistor common emitter amplifier circuit as teaching example, an expression of the voltage amplifying factor is firstly introduced, and students are inspired to think about the simple solutions of upper and lower frequencies rather than frequency response. Then spectrum research method is used to study the coupling capacitance and the junction capacitance according to the expression of capacitive reactance. Thirdly, the frequency characteristics of RC low?pass circuit and the high?pass circuit are simply analyzed, thus the high frequency small signal [Π] equivalent circuit is naturally appeared. The simplied equivalent circuit is deduced discriminatively according to the student′s major and school. The amplifier frequency response is verified and the complete Potter figure is obtained finally.

  Keywords: analog electronic technology; amplifying circuit; frequency response; teaching method

  0 伸 言

  “收压缩制紧缩电路的频比值特点”是《仿造电儿子技术基础》课程中要紧的情节之壹,其教养学方法能否装置妥将直接影响到先生关于收压缩制紧缩电路收压缩制紧缩特点的了松,进而影响电儿子信息类、畅通信类、己触动把持类等先生对后续相干专业课程的念书,典型的如《记号与体系》等课程中的滤波器设计[1?2]。鉴于该章情节的即兴实性强大、难点较多、数学铰带万端琐,教养员任命课难,先生对情节的把握更难,故此在学时拥有限的情景下要将该章情节讲透、讲好是比较困苦的。

  跟遂电儿子技术的展开,仿造电儿子线路的首要情节已度过渡到以集儿子成电路为主,因此《仿造电儿子技术基础》课程中“收压缩制紧缩器的频比值特点”也应以讨论集儿子成运放的频比值特点为主。还愿运用中,集儿子成运放微少半工干在吃水负反应样儿子,故此却根据反应规律和增更加带广大为怀积为定日数此雕刻壹特点寻求出产其收压缩制紧缩电路的频比值特点。另壹方面,集儿子成运放是以分立元件的单元电路为基础,因此在国际外面各高校的《低频电儿子线路课程》的教养学中,依然详细讨论分立元件单元电路的频比值特点效实,并父亲多以单管共射收压缩制紧缩电路为例切磋[3?5]。


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