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Analysis and Simulation Exercises ~
DC Circuit Analysis (2)
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
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Voltage-Controlled
(VCVS)
Voltage-Controlled
(VCCS)
Current-Controlled
(CCVS)
Current-Controlled
(CCCS)
Voltage Source
Current Source
Voltage Source
Current Source
1
Voltage-Controlled Voltage
Source (VCVS)
2Va
2
3
Input File
Voltage-Controlled Voltage Source
V 1 0 10V
E30202
R1 1 2 250
R2 2 0 100K
R3 3 4 40K
RL 4 0 1K
.OP
.TF V(4) V
.END
4
Output File
NODE VOLTAGE NODE VOLTAGE NODE VOLTAGE NODE VOLTAGE
( 1) 10.0000 ( 2) 9.9751 ( 3) 19.9500 ( 4)
.4866
****
SMALL-SIGNAL CHARACTERISTICS
V(4)/V = 4.866E-02
INPUT RESISTANCE AT V = 1.003E+05
OUTPUT RESISTANCE AT V(4) =
9.756E+02
5
Voltage-Controlled Current
Source (VCCS)
6
Input File
Voltage-Controlled Current Source
V 1 0 12V
G 3 0 2 0 0.02
R1 1 2 300
R2 2 0 900
R3 3 0 200
R4 3 0 200
.OP
.OPT nopage
.TF V(3) V
.END
7
Output File
NODE VOLTAGE NODE VOLTAGE
NODE VOLTAGE
( 1) 12.0000 ( 2) 9.0000
( 3) -18.0000
**** VOLTAGE-CONTROLLED CURRENT SOURCES
NAME
G
I-SOURCE
1.800E-01
****
SMALL-SIGNAL CHARACTERISTICS
V(3)/V = -1.500E+00
INPUT RESISTANCE AT V = 1.200E+03
OUTPUT RESISTANCE AT V(3) = 1.000E+02
8
Current-Controlled Voltage
Source (CCVS)
9
Input File
Current-Controlled Voltage Source
V 1 0 15V
V0 2A 2 0V
H 3 0 V0 -400
R1 1 2 50
R2 2 0 500
R3 2A 0 500
R4 3 4 50
R5 4 0 150
.OP
.OPT nopage
.TF v(4) V
.END
10
Output File
NODE VOLTAGE
( 1) 15.0000 ( 2) 12.5000 ( 3) 10.0000 (
( 2A) 12.5000
VOLTAGE SOURCE CURRENTS
NAME
CURRENT
V
-5.000E-02
V0
-2.500E-02
**** CURRENT-CONTROLLED VOLTAGE SOURCES
NAME
H
V-SOURCE
1.000E+01
I-SOURCE -5.000E-02
****
SMALL-SIGNAL CHARACTERISTICS
V(4)/V = 5.000E-01
INPUT RESISTANCE AT V = 3.000E+02
OUTPUT RESISTANCE AT V(4) = 3.750E+01
4)
7.5000
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Current-Controlled Current
Source (CCCS)
12
Input File
Current-Controlled Current Source
V 1 0 20V
F 3 0 V -3
R1 1 2 1500
R2 2 0 2500
R3 3 0 500
R4 3 0 500
.OP
.OPT NOPAGE
.TF V(3) V
.END
13
Output File
NODE VOLTAGE NODE VOLTAGE NODE VOLTAGE
( 1) 20.0000 ( 2) 12.5000 ( 3) -3.7500
**** CURRENT-CONTROLLED CURRENT SOURCES
NAME
F
I-SOURCE
1.500E-02
****
SMALL-SIGNAL CHARACTERISTICS
V(3)/V = -1.875E-01
INPUT RESISTANCE AT V = 4.000E+03
OUTPUT RESISTANCE AT V(3) = 2.500E+02
14
Question & Answer
15
Exercise

For the circuit in Fig.1, find the current
through the 6- resistor and the
voltage v.
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