İzmir University of Economics
ETE 100 Introduction to Electronics and Communications Engineering
EXPERIMENT 1
PSPICE Simulation of Circuits
A. Background
Download, print and read the tutorial on the usage of ORCAD/PSPICE available at
http://homes.ieu.edu.tr/~maskar/CE206/ORCAD-PSPICE-Tutorial.pdf
B. Preliminary Work
1. Half-wave Rectifier: Consider the half-wave rectifier given in Fig. 1.1. Assume the diode is
ideal and a sinusoidal voltage is applied to the input. Plot the input and output voltage
waveforms on Fig. 1.2.
D
+
VS
R
VO
VS (t) = 10 cos 2π x 50 t volts
R = 10 kΩ
Fig. 1.1. Half-wave Rectifier
Fig. 1.2. Input and Output Voltage Waveforms at Half-wave Rectifier
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2. Half-wave Rectifier with Filter: Assume a capacitor is added to the output of the halfwave rectifier as shown in Fig. 1.3. Assume the diode is ideal and a sinusoidal voltage is
applied to the input. Plot the input and output voltage waveforms on Fig. 1.4.
D
+
VS
R
VO
C
VS (t) = 10 cos 2π x 50 t volts
R = 1 kΩ
C = 200 µF
Fig. 1.3. Half-wave Rectifier with Filter
Fig. 1.4. Input and Output Voltage Waveforms
3. Full-wave Rectifier: Consider the full-wave rectifier given in Fig. 1.5. Assume the diode is
ideal and a sinusoidal voltage is applied to the input. Plot the input and output voltage
waveforms on Fig. 1.6.
D
+
VS
R
VO
VS (t) = 10 cos 2π x 50 t volts
R = 1 kΩ
Fig. 1.5. Full-wave Rectifier
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Fig. 1.6. Input and Output Voltage Waveforms
4. Full-wave Rectifier with Filter: Assume a capacitor is added to the output of the full-wave
rectifier as shown in Fig. 1.7. Assume the diode is ideal and a sinusoidal voltage is applied
to the input. Plot the input and output voltage waveforms on Fig. 1.8.
D
+
VS
R
C
VO
VS (t) = 10 cos 2π x 50 t volts
R = 1 kΩ
C = 200 µF
Fig. 1.7. Full-wave Rectifier with Filter
Fig. 1.8. Input and Output Voltage Waveforms
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C. Experimental Work
C.1. Part 1: Half-Wave Rectifier
1.
Construct the given circuit below (Fig. 1.9) in ORCAD by following the steps.
D1
D1N914
V
V
V1
VOFF = 0
VAMPL = 10
FREQ = 100
R1
1k
0
Fig. 1.9
2.
Select
File >> New >> Project. Name your project (Fig. 1.10) as
“Half_Wave_Rectifier_NAME_SURNAME”. As the location field, select the directory as
”D:\MYWORKS\CE206_ORCAD”. Be sure that you selected “Analog or Mixed A/D”.
Fig. 1.10
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3.
Now, select “Create a blank project” at the appeared diagram box (Fig. 1.12).
Fig. 1.11
4.
5.
Add a sinusoidal voltage source (VSIN) and a resistor(R) to your circuit as described in
the ORCAD/PSPICE Tutorial. To work your circuit properly, don’t forget to add Ground
to your circuit.
Set the parameters as shown in Fig. 1.12. (Your laboratory work parameters will be
assigned to you during the Laboratory Work
D1
D1N914
V
V
V1
VOFF = 0
VAMPL = 10
FREQ = 100
R1
1k
0
Fig. 1.12
6.
After the construction of circuit, create a new profile using Pspice >> New Simulation
Profile from toolbar (Fig. 1.13). Write “Half_Wave_Rectifier_NAME_SURNAME” for
New Simulation Name.
Fig. 1.13
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7.
Set the simulation settings as given in Fig. 1.14
Fig. 1.14
8.
Run your program by using toolbar as Pspice >> Run.
Insert your circuit schematic and simulation results below (The capture method is given in
ORCAD/PSPICE Tutorial.
i.
Circuit Schematic
Insert Your Circuit Schematic Here
ii.
Simulation Results
Insert Your Simulation Results Here
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iii. Discussions
C.2. Part 2: Half-Wave Rectifier with Filter
1.
Add a capacitor to the output of the half-wave rectifier as shown in Fig. 1.15
D1
D1N914
V
V
V1
VOFF = 0
VAMPL = 10
FREQ = 100
R1
1k
C1
1u
0
Fig. 1.15
2.
Can you observe the ripples at the output? How do they change with different
capacitance values? Discuss this issue in the Discussions box.
Insert your circuit schematic and simulation results below.
i.
Circuit Schematic
Insert Your Circuit Schematic Here
ii.
Simulation Results
Insert Your Simulation Results Here
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iii. Discussions
C.3. Part 3: Full-Wave Rectifier
1.
In Fig. 1.16, a regulator circuit with full wave rectifier is given. Construct this circuit using
the knowledge of preceding sections. Run the circuit for before and after connecting of
capacitor (To define a single ground point in the circuit, a very large resistor (100 MΩ) is
added to the output, since the voltage drop across it is negligibly small)
D3
D1
D1N914
V
V+
D1N914
V1
VOFF = 0
VAMPL = 10
FREQ = 1k
R1
1k
C1
1u
D2
D4
V-
R2
100M
D1N914
D1N914
0
Fig. 1.16
Insert your circuit schematic and simulation results below.
i.
Circuit Schematic (Full-Wave Rectifier without Capacitor)
Insert Your Circuit Schematic Here
ii.
Simulation Results (Full-Wave Rectifier without Capacitor)
Insert Your Simulation Results Here
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iii. Discussions (Full-Wave Rectifier without Capacitor)
iv.
Circuit Schematic (Full-Wave Rectifier with Capacitor)
Insert Your Circuit Schematic Here
v.
Simulation Results (Full-Wave Rectifier with Capacitor)
Insert Your Simulation Results Here
vi.
Discussions (Full-Wave Rectifier with Capacitor)
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