4 av method 2 av method 1 8 a je le jv rm measured resistance across r
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Question
4)
Av method 2
AV method 1
8
A
Je LE
JV
Rm measured resistance across
R-X
I
V=Ve
RVVR
IR+IV IR IV
Ve
VUR
D
R
Rv
R RRv
R+ Rv
D
Ra= Valar based
V.]
measurments.
DR Actual R
R-unknown
resistance.
V=VR+Va (unlike method I where
v-ve]
measured &
li
Rail = Ves V - IR + IR
I
I
I
Rasha+h
R-actual resista
Rmasured resistance.
Error = Rm-R
=
(R+R-R
R
R
R
R
Av metod 2 is
not suitable for
veng Small R values.
Eurer - R
R+ Rv
whall Ro>> R
→
RRV RV
Error R
Rv
Rv Remstance in stage Jak/n 1) smel
1
Obaid Alromaith.
Luis Bravo
California State University, Fullerton
Department of Electrical and Computer Engineering
EGEC 203L-08
1000Hz
amplitude =4.45
S2
11 -2000 HZ
9000
amplitude 4-9
Electric Circuits Laboratory
Assignment 4
Spring 2024
Time, frequency and voltage measurements and display of AC signals
Submit only copy per team
Before submitting, verify that your submitted files are readable
Read the safety and introduction information carefully and thoroughly from the lab manual.
Note: Failure to follow safety precautions and/or negligence may result in grade reduction.
In this lab assignment, you will work in a team of two members and complete the tasks
given below:
Measurements:
1. Using the function generator, generate a sinusoidal signal with a peak-to-peak voltage of
10V and a time period of 1 ms. Display this using channel 1 of the oscilloscope. Let us
name this signal as sinel. Measure and record its amplitude and frequency.
Similarly, generate a sinusoidal signal with a peak-to-peak voltage of 10V and a time
period of 2 ms. Measure and record its amplitude and frequency. Display this using channel
2 of the oscilloscope. Let us name this signal as sine2. Measure and record its amplitude
and frequency. Include your measurements and results in the report also.
2. Align the phase of both sinel and sine2 and demonstrate these signals to the instructor
during the class.
Use the XY display mode to display the Lissajous figure of sinel vs sine2. Let sinel have
a time period of 1 ms and let 2 sine2 have a time period of 2 ms. Estimate the frequency
of sine2 and verify against the set frequency. Call this trial 1
Demonstrate these signals to the instructor during the class.
Repeat for the following periods of sine2 also (sine 1 remains fixed): 4 ms. 8 ms 16 ms (call
these trials 2, 3, and 4, respectively) and complete the table below:
Trial Sine2 frequency using Lissajous Figure Sine2 frequency from input
I
500 HZ
2
250H2
500H2
250 H2
3
125 H2
125 HZ
4
62-5
62-5
Include your measurements and results in the report also. AC voltage distribution in series resistive circuits:
3. Turn off the signal generator and the oscilloscope and build a series resistive network
consisting of a resistor RD in series with a load resistor RL-4KS2. For the first trial, use
RD=4K. (For subsequent trials use 3K, 2K2, and 1K2 for RD, respectively.)
Connect this series resistive network to a sinusoidal input signal with a peak-to-peak
voltage of 10V and a time period of 1 ms (sinel.) Display this input signal using channel
1 of the oscilloscope.
Connect channel 2 of the oscilloscope to the load resistor RL.
Measure and record the amplitude, peak-peak voltage, frequency for both the input and the
output signals.
Repeat for other specified values of RD.
Input
Output
shape
shape
Input
Amplitude Amplitude
Output
Input
Frequency
RD 4K2 Sine
Sine
Sv
4.900
100042
Output
Frequency
1000 HZ
RD=3K2
Sine
Sine
SV
5.50V
1000 HZ
1000 HZ
RD=2K
Sine
Sine
5v
6.500
000 HZ
1000 42
RD = 1KQ
Sinc
Sine
5v
7-700
1000 HZ
1600 HZ
Demonstrate your results to the instructor during class time.
Include your measurements and results in the report also.
4. How is the output affected as RD is changed? Give reasons and explain in the report.
Deliverables:
•
Turn in a completed and filled copy of this handout on Canvas showing all relevant
calculations, data and results (in PDF format).
Also turn in an informal report via Canvas in PDF format. Your report shall include the
following:
1. Title page. This page must include the title of the assignment, the full names of the team
members and date of report completion
2. Introduction
3. Theoretical background
4. Tools and Equipment
5. Procedure
6. Results
7. Discussion
8. Conclusions