(4)当输出接一 12k?负载时的电压增益,
解:
求,
mA1)V12(0
c3
C3?
RI
V9)V12(0 e3E3E3C3C E 3 RIVVV
+ 12
+
-
v o
- 12
R c1 R
c2
T 2 T
1
R e1
i C1 i C2
+
-
v id
T 3
R b1
i E
R e2
R b2
R c3
R e3 i
E3
1k?
1k?
10k? 10k? 3k?
12k?
10k?
R i2
例
。时,当
,,
均为硅管,、、
V00
8050
TTT
Oi
321
321
vv
mV5)3(;)2(;
)1(
Oi
V2VD2V
e2
C E 2C E 3EC23C
vv
AAA
R
VVIII
时,当的值及
、、、、
(1)静态
k3.2mV26)1(200
E3
3b e 3 Ir?
(2)电压增益
+ 12
+
-
v o
- 12
R c1 R
c2
T 2 T
1
R e1
i C1 i C2
+
-
v id
T 3
R b1
i E
R e2
R b2
R c3
R e3 i
E3
1k?
1k?
10k? 10k? 3k?
12k?
10k?
R i2
mA37.0
c2
B E 3e3E3
C2?
R
VRII
V9
)7.0(1037.012
V12 E2c2C2C E 2
VRIV
mA74.022 C2E2E III
k2.5
74.0
121074.07.0
)12(
E
e1EE
e2
I
RIV
R
k78.3mV26)1(200
E2
2b e 2 Ir?
k3.245
)1( e33b e 3i2 RrR?
(3)
+ 12
+
-
v o
- 12
R c1 R
c2
T 2 T
1
R e1
i C1 i C2
+
-
v id
T 3
R b1
i E
R e2
R b2
R c3
R e3 i
E3
1k?
1k?
10k? 10k? 3k?
12k?
10k?
R i2
50)(2 )//(
b1be
i2c22
V D 2 Rr
RRA?
9.3
)1(
)//(
e33be
L3c3
V2
Rr
RR
A
1 9 5V2VD2V AAA
V98.0105195 3iVOvAv
(4) 时 k12
LR 95.1
)1(
)//(
e33be
L3c3
V2 Rr
RRA
5.97V2V D 2V AAA
解:
求,
mA1)V12(0
c3
C3?
RI
V9)V12(0 e3E3E3C3C E 3 RIVVV
+ 12
+
-
v o
- 12
R c1 R
c2
T 2 T
1
R e1
i C1 i C2
+
-
v id
T 3
R b1
i E
R e2
R b2
R c3
R e3 i
E3
1k?
1k?
10k? 10k? 3k?
12k?
10k?
R i2
例
。时,当
,,
均为硅管,、、
V00
8050
TTT
Oi
321
321
vv
mV5)3(;)2(;
)1(
Oi
V2VD2V
e2
C E 2C E 3EC23C
vv
AAA
R
VVIII
时,当的值及
、、、、
(1)静态
k3.2mV26)1(200
E3
3b e 3 Ir?
(2)电压增益
+ 12
+
-
v o
- 12
R c1 R
c2
T 2 T
1
R e1
i C1 i C2
+
-
v id
T 3
R b1
i E
R e2
R b2
R c3
R e3 i
E3
1k?
1k?
10k? 10k? 3k?
12k?
10k?
R i2
mA37.0
c2
B E 3e3E3
C2?
R
VRII
V9
)7.0(1037.012
V12 E2c2C2C E 2
VRIV
mA74.022 C2E2E III
k2.5
74.0
121074.07.0
)12(
E
e1EE
e2
I
RIV
R
k78.3mV26)1(200
E2
2b e 2 Ir?
k3.245
)1( e33b e 3i2 RrR?
(3)
+ 12
+
-
v o
- 12
R c1 R
c2
T 2 T
1
R e1
i C1 i C2
+
-
v id
T 3
R b1
i E
R e2
R b2
R c3
R e3 i
E3
1k?
1k?
10k? 10k? 3k?
12k?
10k?
R i2
50)(2 )//(
b1be
i2c22
V D 2 Rr
RRA?
9.3
)1(
)//(
e33be
L3c3
V2
Rr
RR
A
1 9 5V2VD2V AAA
V98.0105195 3iVOvAv
(4) 时 k12
LR 95.1
)1(
)//(
e33be
L3c3
V2 Rr
RRA
5.97V2V D 2V AAA