University of California, San Diego
Department of Electrical and Computer Engineering
ECE65, Spring 2010
Lab 1, Introduction to PSPICE Simulations
Note:
Each student
has to turn in this assignment (treat this as a homework, do not use
the lab report format).
Due in the class on Wed. April 14.
Attach the simulation circuit and all simulation results to your work.
Problem 1:
Voltage Divider (Bias Point, DC Sweep, Parametric sweep, plotting)
1
2
L
i
o
o

+
+

R
R
R
v
v
i
In many occasions we need to bias the circuit compo
nents with a voltage that is different than the power
supply voltage.
Other times we need to feed back a
signal proportional to the output signal of one part of
the circuit to another part. The voltage divider circuit
below (circuit in the “box”) is the simplest circuit that
does these functions and, therefore, is used extensively
in the electronic circuits.
1) Calculate the Thevenin equivalent circuit of the voltage divider (the “box).
Use the
Thevenin equivalent circuit to find
v
o
and
i
o
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 Spring '07
 fullterton
 Operations Research, Voltage divider, RC circuit, Thévenin's theorem

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