习题7.5.1 R1=75/18/a+(+B2)×15x103]=07k R1=3.3k A B(3.3∥R1) 1+(1+B)×15×103 2.7k 10k 15.27 Vol C4 B2RL T A2Vaha+(+B2)×15×10 564 3.3k 1.8k 50uF A1·A2=8612 vv
习题7.5.1 7.5//1.8// (1 ) 15 10 0.75k 3 L 1 = be2 + + 2 = − R r 3.3k RO1 = ( ) 15.27 1 15 10 (3.3// ) 3 be1 1 1 L 1 i o 1 V1 = − + + = = − − r R V V A ( ) 56.4 1 15 10 3 be2 2 2 L o 1 o V2 = − + + = = − − r R V V A 861.2 V1 V2 o 1 o i o 1 i o V = = = A A = V V V V V V A
10 习题7.6.1、7.6.2 (1+j-k(1+j)1+j 5×10 201g wM. Fv=201g AvM-201gl =18dB 8g- 4+ 168KHZ 15MHZ -180 -315 一一一 90d/dec 45d/dec 5駟目
) 7 5 10 )(1 7 10 )(1 6 10 (1 3 10 V + + + − = f j f j f j A 习题7.6.1、7.6.2 20lg 20lg 20lg 1 18dB V VM V = VM − = F A F A