共发射极放大电路图.ewb

Multisim2001软件的仿真电路实例261例

Electronics Workbench Circuit File
Version: 5
Charset: ANSI
Description: 
"简单共发射极放大电路图" 
"	VBB是基极直流电源电压，保证发射结加正向电压（即正向偏置）。" 
"	VCC是集电极直流电源电压，保证集电结加反向电压（即反向偏置）；并供给整个放大器的能源。" 
"                          晶体管的放大作用是用输入端的一个能量较小的信号通过晶体管产生一个能量较大的信号。输出信号能量的来源是直流电源VCC。" 
"	Rc是集电极电阻，一方面它形成集电极的直流通路，使集电极直流电源电压通过Rc加到集电结上；另一方面它又是负载电阻，把被晶体管放大了的集电极电流转化为输出电压vo，使放大器具有电压（功率）放大的功能。" 
"	Cc是输出端的耦合电容，它一方面起着隔直流的作用，使集电极的直流电压不能传输到输出端，保证放大器的直流工作状态不受输出端负载电压R1的影响；另一方面又起着耦合交流的作用，保证交流信号能畅通地传输到输出端。" 
"" 
"" 

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