Name:
Due date:
Grade:
ECE 2006 LABORATORY 4
PSPICE
Objectives
The learning objectives for this laboratory are to give the student the ability to:
 use PSPICE for DC circuit analysis and superposition theorem demonstration
References
D. E. Johnson, J. R. Johnson, J. L. Hilburn, and P. D. Scott, Electrical Circuit Analysis.
3rd Edition, Prentice-Hall, 1997.
Background
SPICE was developed in the Department of Electrical Engineering and Computer Science
at the University of California at Berkeley. SPICE is capable of performing DC, AC, or
transient analysis. The SPICE statements may be subdivided into the following five
categories:
1. Title and comment statements.
2. Data statements.
3. Solution control statements.
4. Output specification statements.
5. End statement.
These statements and their application for DC analysis are described in detail in Chapter
4 (Computer-Aided Circuit Analysis Using SPICE) and Appendix D ("PSPICE
Reference Guide") of your textbook.
PSPICE is available in the PSPICE STUDENT group on the Pentium machines in
MWAH 102.
This PSPICE program is a window-based version and the student can access the program
by clicking the PSPICE AD STUDENT icon.
Equipment
A PC with an editor and PSPICE.
Procedure
1. Prepare your circuits for analysis.
1.1 Determine what voltages and currents are required.
1.2 Neatly add any additionally required 0 volt voltage sources to Figures 1,2,3, and 4.
1.3 Number the nodes on each Figure sequentially starting with 0 at ground and move
clockwiseuntil all nodes have been numbered. Circle you node numbers.
2. Write and run a PSPICE net list program for each of the circuits in Figures 1 and 2
using the node numbers assigned in Procedure step1.3. Have your program do all the
calculations, including the correct signs. Please include a descriptive title with your
names and lab section.
3. Write and run a PSPICE schematics program for each of the circuits in Figures 3 and
4 using the node numbers assigned in Procedure step1.3. Have your program do all
the calculations, including the correct signs. Please include a descriptive title with
your names and lab section.
4. Print the 4 output files. Add the labels "=Vx", and ''= Ix'' to the corresponding voltage
and current on each printed output file. Do not add additional markings on these
printed output files. Attach these printed output files.
5. Use PSPICE to solve the circuit in Figure 4 for Vx and Ix using superposition. Do not
attach these PSPICE superposition files. Put your results in Table 1.
5.1 For each of the sources in Table 1, “kill” all other sources in Figure 4 and run the
simulation on this modified circuit. Remember, to “kill” a voltage source, short the
nodes, and to “kill” a current source, open circuit the nodes.
6. Erase your files from the hard disk. You're welcome to keep your files on your own
floppy disk.
Conclusions
In your report, explain any problems you had and how you corrected them.
TABLE 1
APPLICATION OF SUPERPOSITION TO DETERMINE
Vx and Ix IN FIGURE 4
Source
3A
15 V
5A
5V
Sum
Vx -volts
Ix –amps
Figure 1. Circuit 1.
Figure 2. Cicuit 2
Figure 3. Cirucit 3.
Figure 4. Circuit 4.