Q点稳定电路的挖掘和延伸

Extension and Excanate of Q-point stable Circuit

本文对"模拟电子技术"中射极分压偏置电路(Q点稳定电路)进行深层次的挖掘:从剖析它的结构开始,通过此电路阐述估算在该课程中的重要意义;提炼以变化应变化的普适工程化思维;挖掘该电路中隐含的科学发展规律(发现问题、分析问题、解决问题、发现新问题、再分析、再解决),使学生体会进而掌握电路背后蕴含的知识和魅力。

In this paper, emitter potentiometric bias circuit （ Q-point stable circuit ） is studied at deep level. First- ly, its structure is analyzed and a basic rule which tells performance is determined by composition could be obtained accordingly. The importance of estimation in analog circuit is stated through a detailed calculation about this cir- cuit. A general engineering idea and approach is extracted by a deep analysis of its working process. A significant discipline about scientific development could be achieved after a deep summary based on a regular cognition proce- dure.