R_b的变化对Q点和电压放大倍数影响的仿真分析  

Simulation Analysis on R_b ’s Change Influence on Quiescent Point Q and Voltage Amplification Factor

作　　者：李烨 

机构地区：[1]镇江高等职业技术学校机电系,江苏镇江212016

出　　处：《萍乡高等专科学校学报》2012年第6期17-22,共6页Journal of Pingxiang College

摘　　要：在放大电路中,基极偏置电阻Rb的作用非常重要,它能为电路提供一定的基极偏流,从而确定合适的静态工作点Q,同时Q点的变化又会对电压放大倍数Av产生一定的影响。本文针对典型的单管固定偏置放大电路,通过改变Rb的值,采用Multisim10仿真软件对电路的Q点和Av进行具体的定性分析。In amplifying circuit, base offset resistance Rb is very important. It can provide base drift for the circuit and then decide suitable quiescent point Q, which has influence on the voltage amplification factor Av. This paper mainly focuses on the typical single tube fixed partial placed great circuit. Through changing Rb, we make a qualitative analysis on point Q and Av by making use of Multisim 10.

关 键 词：MULTISIM 基极偏置电阻Rb 静态工作点Q 电压放大倍数Av 

分 类 号：TN722.75[电子电信—电路与系统]