作业71744(a) R R2 交、直流负反馈 R TI D 电压并联负反馈 R2 R EE R 1 R VF RE HOME BACK NEXT
R5 R4 T1 D1 vO T2 +VC C -VEE R1 R2 D2 A + − R3 vI if ii R2 交、直流负反馈 电压并联负反馈 o f G V I F = 2 1 R = − i o RF I V A = G 1 F = −R2 s o VF V V A = i i i o V I I V = 1 RF 1 R = A 1 2 R R = − 作业 7.1.1 7.4.4 (a)
作业71744() Rn、Rn直流负反馈 R Re2 R 3 电压并联负反馈 Re 工 Ra1交、直流负反馈 rb2 R 电流串联负反馈 TI T2 T3 R Re R 2 R =Ac(R3∥Ra)= R3∥Rn R HOME BACK NEXT
T1 vO Re1 Re2 vI T2 T3 -VC C Rb2 Rb3 Rc1 Rc2 Rc3 Rf 1 C Rf 2 io vf 作业 7.1.1 7.4.4 (b) Re1 电流串联负反馈 交、直流负反馈 Rf1、Rf1 直流负反馈 电压并联负反馈 = −Re1 o f R I V F = i o G F V I A = R 1 F e1 1 R = − i o VF V V A = o o i o I V V I = ( // ) AG F Rc3 Rf 2 = e1 c3 f 2 // R R R = −
作业71744( R1、R2交、直流负反馈 R R 电流并联负反馈 T2 R v IrRr=(+l。)R2 vO R e2 R 2 Re2+Ro IE R 2 R A =(1+ c2 I R R R HOME BACK NEXT
Re1 Re2 Rf Rc1 Rc2 T1 C T2 b1 Cb1 Rs + − vs VC C + − vo if io ii 作业 7.1.1 7.4.4 (c) Rf、Re2 交、直流负反馈 电流并联负反馈 o f I I I F = e2 f e2 R R R + = − i o IF I I A = I 1 F (1 ) e2 f R R = − + s o VF V V A = i s o c2 I R I R − = s c2 IF R R = −A s c2 e2 f (1 ) R R R R = + f f f o e2 − I R = (I + I )R
作业71744(d +Ⅴcc R1、R2交、直流负反馈 T 电压串联负反馈 R2 RI HOME BACK NEXT
R3 T vO +VC C A + − R1 vI R2 作业 7.1.1 7.4.4 (d) R1、R2 交、直流负反馈 电压串联负反馈
作业71744( A2、R3交、直流负反馈 2 电压并联负反馈 R3 R R RF R R VE RE R HOME BACK NEXT
R3 vO + − R2 vI R1 A2 + − A1 RL if ii vO 作业 7.1.1 7.4.4 (e) A2、R3 交、直流负反馈 电压并联负反馈 o f G V I F = 3 1 R = − i o RF I V A = G 1 F = −R3 s o VF V V A = s i i o V I I V = 1 RF 1 R = A 1 3 R R = −
作业71744(0 Rs RI R6交、直流负反馈 R3 电流串联负反馈 Ra HOME BACK NEXT
R2 vO + − R4 vI R3 A1 + − A2 R6 R5 R1 RL 作业 7.1.1 7.4.4 (f) R6 交、直流负反馈 电流串联负反馈
例习题717)求:()引入电压串联负反馈 解 +V 正反馈 R2 R T d b R f Re R CC HOME BACK NEXT
(1)引入电压串联负反馈 解: 例 求: (习题7.1.7) vO R4 vS + - Rf R1 T2 T1 +VC C − VC C A R2 R3 a b c d e f g h j i + - (+) (+) (−) (−) (−) 正反馈
例习题717)求:()引入电压串联负反馈 解 +V 电压串联负反馈 R2 c RI T b R Re R CC HOME BACK NEXT
(1)引入电压串联负反馈 解: 例 求: (习题7.1.7) vO R4 vS + - Rf R1 T2 T1 +VC C − VC C A R2 R3 a b c d e f g h j i + - (+) (+) (+) (+) (+) 电压串联负反馈
例习题717求:(2)引入电压并联负反馈 解 +V 正反馈 R2 R T b R f Re R CC HOME BACK NEXT
(2)引入电压并联负反馈 解: 例 求: (习题7.1.7) vO R4 vS + - Rf R1 T2 T1 +VC C − VC C A R2 R3 a b c d e f g h j i + - (+) (+) (+) (+) (+) 正反馈
例习题717)求:(2)引入电压并联负反馈 解 +V 电压并联负反馈 R2 R T d b R Re R CC HOME BACK NEXT
解: 例 求: (习题7.1.7) vO R4 vS + - Rf R1 T2 T1 +VC C − VC C A R2 R3 a b c d e f g h j i + - (+) (+) (−) (−) (−) 电压并联负反馈 (2)引入电压并联负反馈