习题3-5-4 已知B=100。试求 (1)Q点 (2)电压增益Av1=V/和Av2=la/Vs (3)输入电阻R1 (4)输出电阻R1和Ra2 R R Rol 15k Re R VsO 2ko R (1+ 习题3-5-5 +15V R 习题3-6-3 R 75k 101mA R Ri R
习题 3-5-4 已知 =100。试求: (1)Q 点; (2)电压增益 AV1=Vo1/Vs 和 AV2=Vo2/Vs; (3)输入电阻 Ri; (4)输出电阻 Ro1 和 Ro2。 + – vs Rb1 b c Rc VCC vo1 Rs Re Rb2 Cb1 + 20k 15k 2k 2k 2k + + 10V vo2 e Ro2 Ro1 + – e Vi Rb1 rbe b Ib Ic Rc + – Rs c Ib Rb2 (1+)Ib Rb Re Vo2 Vo1 + – Vs – + 习题 3-5-5 + – vs b c Rc vo Rs Re + + +15V e RL -15V + – e Vi rbe b Ib Ic Rc + – Rs c Ib (1+)Ib Vo Vs – + RL 习题 3-6-3 + – vi 1.01mA +VCC + – vo RL T + – vs e Rs + b c Rc Cb2 + Cb1 +15V 7.5k -VEE -15V Ri Ro + – + – e Rs Vs Vi rbe b Ii Ie Ib Rc + – Vo RL c Ic= Ib Ri Ro
习题3-6-5 +Vcc=+10v 8kQ 8kQ Y RL A lokAl +Vcc=+lov R 8kQ Rb 100kg Ie=ImA ①10kg
习题 3-6-5 b c Rc Y IE=1mA + + +VCC=+10V e -VEE= -10V Rb 10k 8k Z X + b c Rc Y IE=1mA + + +VCC=+10V e -VEE= -10V Rb 10k 8k Z X + + – vs Rs 10k RL 10k b c Rc Y IE=1mA + + +VCC=+10V e -VEE= -10V Rb 10k 8k Z X + + – vs Rs 200 RL 10k b c Rc Y IE=1mA + + +VCC=+10V e -VEE= -10V Rb 10k 8k Z X + + – vs Rs 100k RL 1k