Tim Nosal
Experiment #1
Lab 308: Ren, He
3/9/2010
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Objective
The objective of this experiment is to allow us to become more comfortable with the lab
equipment, like the function generator.
We used this device to reinforce the concepts of RMS,
AVERAGE, and PEAK quantities.
We also gained a better understanding of simple resistor
networks by using the protoboard to measure voltages and currents through certain resistors.
This also allowed us to realize the basic concepts of the Thevenin Equivalent.
Equipment Used

HP Function Generator

ProtoBoard

Oscilloscope

Multimeter

Ohmmeter

Various resistors
Discussion on Theoretical Background
There was much relevant information contained in the theoretical background section for
this experiment.
The first thing discussed was the difference between direct current (DC) and
alternating current (AC).
Direct current has a constant current while alternating current has a
current that varies with time, closely following a sinusoidal wave form.
DC circuits have expressions for power when compared to AC.
The equation for DC
power is given:
=
=
P
VI
I2
However, this is clearly different from the power exhibited in an AC current since power is given
as:
=
=
( )/
P
i2tR
v2 t R
It is important to note that in an AC circuit the currents and voltages are repetitive with
increasing time.
This is why AC currents and voltages are called periodic, and the shortest time
duration over the course of one repetition is called a period.
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 Spring '10
 SMITH
 Alternating Current, Direct Current, Thevenin equivalent, function generator, SINUSOIDAL WAVE FORM

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