Ejmplo anls p spice
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Electrónica II
Análisis basado en Pspice
Ing. Fernando MonrroyUPSA, marzo de 2011
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OBJETIVOS
•Determinar el punto de operación del transistor•Determinar los parámetros ac del transistor•Obtener los parámetros del amplificador
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El circuito a analizar
V iC 2
1 0 u
C 1
1 0 u
R L
1 0 k
R b 1
4 7 0 k
C 3
5 u
V s
C 45 u
V c c3 0 V d c
F R E Q = 1 0 kV A M P L = 2 0 mV O F F = 0
0
V o o
Q 1
Q 2 N 2 2 2 2
V o LR b 2
2 2 0 k
R e
1 . 5 k
0
R s
1 k
R c
6 . 2 k
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Cálculo del punto QPerfil de simulación: Bias Point
1 1 . 1 1 V
C 2
1 0 u
3 0 . 0 0 V
4 . 4 8 6 V
R b 1
4 7 0 k
3 . 8 1 9 V
C 3
5 u
C 45 u
V c c3 0 V d c
0
Q 1
Q 2 N 2 2 2 2
R b 2
2 2 0 k
0 V
R e
1 . 5 k
0 V
0
1 4 . 2 2 V
R c
6 . 2 k
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Cálculo del punto QPerfil de simulación: Bias Point
C 2
1 0 u
R b 1
4 7 0 k 1 4 . 1 0 u A
C 45 u
V c c3 0 V d c
2 . 5 4 6 m A
Q 1
Q 2 N 2 2 2 21 4 . 1 0 u A
2 . 5 3 2 m A
R b 2
2 2 0 k1 4 . 1 0 u A
R e
1 . 5 k
2 . 5 4 6 m A
R c
6 . 2 k
2 . 5 4 6 m A
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Cálculo del punto Qlecturas y cálculo
Vc 14.22 V Ic 2.53mA
Vb 4.49 V Ib 14.1uA
Ve 3.82 V Ie 2.55mA
1791.14
2530
53.2
1.14
4.1082.322.14
67.082.349.4
B
CF
C
B
ECCE
EBBE
I
I
mAI
AI
VVVV
VVVV
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Parámetros ac del transistorcálculo
KmA
V
I
Vr
KA
mV
I
Vr
C
AO
B
T
Ff
5.3953.2
100
84.11.14
26
179
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Parámetros del amplificadorperfil de simulación “time domain”
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Trazas de las señalesVo y 100*Vs
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Trazas de las señalesVs, Vi y Voo, VoL
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Parámetros del amplificadorcálculo
KKRVV
VR
KRV
VVR
V
VA
mV
V
V
VA
SiS
ii
LOL
OLOOO
I
OOVO
S
OV
16.2158.1320
58.13
5.6261099.3
99.324.4
22.31201358.0
24.4
19920
99.3
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Ancho de bandaperfil de simulación “ac sweep/noise”
V iC 1
1 0 u
V 4
2 0 m V a c0 V d c
V s
R s
1 k
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Ancho de bandalectura
KHzf
KHzf
H
L
5.226
87.1