如下图所示共射基本放大电路,三极管β =100,当IB=10μA,VCC =12V,RC =4kΩ时,其C-E间直流工作点电压UCE为: A. 12V B. 8V C.
RBRc+Vcc+HTC2+uoUiRL四、(10分)在图示电路中,已知晶体管静态时B-E间电压为UBEQ,电流放大系数为β,B-E间动态电阻为rbe。填空:静态时,IBQ的表达式为,ICQ的表达式为,UCEQ的表达式为;电压放大倍数的表达式为,输入电阻的表达式为,输出电阻的表达式为;若减小RB,则ICQ将___,rbe将___,将___,Ri将___。 ...
(10分)A Oh Where's yoor classrcemA: Hcllo, Jim. IB War's thatB: Oh. it's a picture of my scboolC. Let me help youAIt's nice. 2D. Whar's in your classroo?B It's here. Ler's go and seeE Where's your desk?A Great 3B: Many desks, chairs. pictures and lighus Look...