THE PENNSYLVANIA STATE UNIVERSITY
EE 120: ENGINEERING CIRCUIT ANALYSIS
Experiment #1: Example DC Circuits
Date Performed: January 27, 2009
Due Date: February 3, 2009
Authors: Christopher Bowman
Table of Contents
Subject Page number
Experiment Development 4
In this experiment we are resistors, breadboards and multimeters. The goal of this
experiment is to practice resistance calculations, learn proper lab procedures, and use test
equipment to verify our calculations. In the lab we are to calculate, build, and measure various
combinations of resistors both in series and in parallel. This lab will introduce us to the lab
setting and help us in future labs.
The first step in this lab is to calculate the resistances given by the schematics.
The circuit consists of a various resistors placed in both series and parallel combinations,.
During the experiment we measured the total resistances with a multimeter. There were four
different setups, the one shown above, one with two sets of parallel resistor combinations, one
with a 5 volt power supply, and a more complex circuit also with a power supply in the circuit.
In each part of the experiment we made calculations, took down measurements, both of
voltage and or resistance depending on what the instructions asked for. The first two
measurements we took only dealt with resistance. The second half we calculated and measured
the value of the voltage along with resistance.
After each circuit was made we took measurements and recorded the information
needed and compared them with our calculations
Resistance Calculated: 653.3 Ω
Resistance Measured: 650 Ω
Resistance Calculated: 14.263 k Ω
Resistance Measured: 14.36 k Ω
Calculated Resistance: 2509.9 Ω
Measured Resistance: 2505 Ω
A-B B-C A-C
Calculated 2.26 V 2.74 V 5.00 V
Measured 2.2355 V 2.765 V 5.00 V
We didn’t quite get to finish this part
of the lab because we ran out of time.
So I never got the measured values.
And so the short does not make any
R1 R2 R3 R4 R5 R6 R7 R8
Calculated 1.638 V 3.362 V 3.362 V 1.29 V -586.316 mV 1.486 V 594.363 891.545
Using the resistance calculations and comparing them to the measured resistances we
gathered with our multimeters was a good experience in introducing lab equipment. Also
learning the differences of putting the resistors in series and parallel is helpful to me as I plan
using this type of lab equipment in the future.