《晶体管共射极单管放大电路》的实验报告.doc

《晶体管共射极单管放大电路》的实验报告
实验二 晶体管共射极单管放大器
一、实验目的
1(学会放大器静态工作点的调式方法和测量方法。
2(掌握放大器电压放大倍数的测试方法及放大器参数对放大倍数的影
响。
3(熟悉常用电子信号为零的情况下进行。 1)没通电前，将放大器输入端与地端短接，接好电源线(注意12V电
源位置)。
2)检查接线无误后，接通电源。
3)用万用表的直流10V挡测量U= 2V左右，如果偏差太大可调节静态E
工作点(电位器RP)。然后测量U、U，记入表2—1中。 BC
表2—1
测 量 值 计 算 值 U(V) U(V) U(V) R(KΩ) U(V) U(V) I(mA) 2 60 2 4)关掉电源，断开开关S，用万用表的欧姆挡(1×1K)测量R。将B2
所有测量结果记入表2—1中。
U,UUCCCE5)根据实验结果可用:I?I,或I, CECRRCE
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