第八章习题解答
DESCRIPTION
第八章习题解答. 运放的应用. 习题 8.1.1 P 375. 习题 8.1.2. 习题 8.1.4. A 1 、 A 2 为电压跟随器. 习题 8.1.5. A 1 、 A 2 、 A 3 、 A 4 均为电压跟随器. 习题 8.1.8. 习题 8.1.9. V s =I 1 R 1 , I 1 =I 2 V m = - I 2 R 2 = - I 1 R 2 = - V S R 2 / R 1 I 4 =V M / R 4 = - R 2 V S / (R 1 R 4 )=I 1 R 2 / R 4 - PowerPoint PPT PresentationTRANSCRIPT
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第八章习题解答
运放的应用
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习题 8.1.1 P375
21
321
321
12
21
21
21
12
21
21
3
)1)((
,)1(
sso
f
fsso
sspf
pO
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R
R
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R
Rvv
=
时当
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习题 8.1.2
VR
Rv
R
Rvv
VvvR
Rv
fo
fso
ssf
o
8.1)()1(
2.12
2
21
2
22
111
11
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习题 8.1.4
A1 、 A2 为电压跟随器
VvVv oo 4;3 21
VRR
R
RR
RV
R
Rv
R
Rvv ooo 5)
//1(
21
3
54
53
2
32
1
31
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习题 8.1.5
A1 、 A2 、 A3 、 A4 均为电压跟随器
33;22;11 vvvvvv ooo
)(=,时==当 321321
123
123
312
312
321
321
3
1
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//
//
//
oooo
oooo
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RRR
RRv
RRR
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RRR
RRvv
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习题 8.1.8
22
)2
1
2
1()(
2,
2
1
1
2
1
212
1
2
21
R
Rv
R
Rvvv
R
Rv
RR
Rvvvvvv
I
Iooo
IBoIAo
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习题 8.1.9
Vs=I1R1 , I1=I2
Vm= - I2R2= - I1R2
= - VSR2 / R1
I4=VM / R4
= - R2VS / (R1 R4)=I1R2 / R4
VO= - I3R3+VM= - (I1+I4)R3+VM
= - I1(1+R2/ R4)R3 - I1R2= - (R2+R3+R2R3/R4)VS/R1
VO / VS= - (R2+R3+R2R3/R4) / R1
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习题 8.1.10
(1):
(2):
VtCR
vdtv
CRv s
so 51
11
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习题 8.1.19
( 3 ):功能:
( 2 ):波形图
( 1 ) : 输入——输出特性
取绝对值运算、 小信号整流。