【单选题】Our answer will be threatened by one natural disaster after another if we
【简答题】共发射极基本放大电路如图 1 所示。计已知三极管的β =100 , U CC =12V , R B =500k Ω, R C =3k Ω, R L =6k Ω,算 ( 1 )静态工作点 Q ; ( 2 )计算电压放大倍数 ,输入电阻 R i ,输出电阻 R o ; ( 3 )求放大电路不接负载时的电压放大倍数。 图 1
【多选题】已知某基本共射放大电路的输出特性曲线如图所示,请问: 1. 静态工作点Q2对应的电源Ucc是 (V)? 2.静态工作点Q2的参数I B 是多大 (μA)? 3.静态工作点Q2的参数I C 是多大 (mA)? 4.静态工作点Q2的参数U CEQ 是多大 (V)?
【单选题】在“峨眉山月半轮秋”这一句中,哪个字是入声字?( )
【判断题】共射基本放大电路如图所示,已知 V CC = 12V , R B = 300KΩ , R C = 4KΩ , R L = 4KΩ , β = 50 。 忽略管压降 U BE , 则其 静态工作点 I B = 0.06mA 、 I C = 3mA 、 U CE = 4V。
【单选题】Choose the correct answer to replace the underlined words. Our answer will be threatened by one natural disaster after another if we don't act now.
【单选题】Our answer will be threatened by one natural disaster after another if we don't act now.