FACU LTY OF ENGINEERING
ELECTRICAL & ELECTRONIC ENGINEERING DEPARTMENT
LAB REPORT ASSESSMENT
EE110/BER1011 – Electronic Laboratory 1A
No
Student Name
Student ID
1
Sara Hesham Hegazi Omar
1002059533
2
Dina Ashraf Mohamed Talat Koushek
1001957076
3
Ibrahim Dayah Abdullahi
1002059744
4
Osama Zakaria Mahmoud Abu Reidy
1002059009
Criteria
Safety
measure/
Precaution
(10 points)
PLO8
Commented [OZMAR1]: NOTE : Sara Do not submit this file, I’ll
submit it myself, I’ll include somethings. So I am doing the whole
thing alone huh ?
Unacceptable
Satisfactory
Moderate
Good
Excellent
(0%)
(25%)
(50%)
(75%)
(100%)
No safety
measure /
precaution is
listed in the
lab report.
Safety
measures /
precautions
written in the
lab report are
irrelevant to
the
experiment.
Safety
measures /
precautions
written in the
report were
missing at
least one
important
consideration;
will result in
some risk to
student safety
if not revised
properly.
All major
safety
measures /
precautions
are
adequately
addressed in
the report;
procedures
All major
safety
measures /
precaution is
fully addressed
in the report.
adopted are
likely to
produce a
safe
experiment
Score
Experimental
procedures
(10 points)
No
procedures
are written in
the report.
Procedures do Procedures are
not properly
listed but
demonstrate
missing some
the steps
information;
taken in the
some steps are
experiment.
not numbered
and/or are in
incomplete
passive
sentences.
Procedures
are listed in
complete
passive
sentences,
important
experimental
details are
covered, but
some minor
details are
missing.
Procedure is
listed in clear
steps. Each
step is
numbered and
in a complete
passive
sentence.
No figures,
graphs, tables
are provided.
Figures,
Most figures,
graphs, tables graphs, tables
contain errors OK, some still
or are poorly missing some
constructed,
important or
have missing
required
titles, captions
features.
or numbers,
units missing
or
All figures,
graphs, tables
are correctly
drawn, but
some have
minor
problems or
could still be
improved.
All figures,
graphs, tables
are correctly
drawn, are
numbered and
contain
titles/captions.
PLO2
Results:
Data, figures,
graphs,
tables, etc.
(30 points)
PLO2
incorrect, etc.
Discussion/
Observation
(30 points)
PLO2
Incomplete
Incomplete /
Some of the Almost all the
Important
and incorrect
incorrect
results have
results have trends and data
interpretation interpretation been correctly been correctly comparisons
of trends and of trends and
interpreted
interpreted
have been
comparison of comparison of and discussed;
and
interpreted
data
data.
Partial but
discussed;
correctly and
indicating a
incomplete
only minor
discussed;
lack of
understanding improvements
good
understanding
of results is
are needed.
understanding
of the results.
still evident.
of results is
conveyed.
Conclusion
(10 points)
Incomplete
and incorrect
conclusion.
Conclusions
missing or
missing the
important
points.
PLO2
Appearance
and
formatting
(5 points)
Appearance
and
formatting
totally
inappropriate.
Sections out
of order,
report is not
typed /
written using
the
appropriate
format.
Grammar /
spelling error,
writing style
is rough and
immature.
Frequent
grammar and
/ or spelling
errors.
Major points
are drawn, but
many are
misstated,
Indicating a
lack of
understanding.
Sections in
order.
Formatting is
rough but
readable.
PLO10
Spelling,
grammar,
sentence
structure
(5 points)
PLO10
Occasional
grammar /
spelling
errors,
generally
readable with
some rough
spots in
writing style.
Conclusions
have been
drawn, could
be better
stated.
Conclusions
have been
clearly made;
student shows
good
understanding.
Lab report is
mostly typed /
written using
the
Lab report is
typed / written
in well
formatted,
very readable.
Appropriate
format, all
sections in
order,
formatting
generally
good but
could still be
improved.
Less than 3
grammar /
spelling
errors,
mature,
readable
style.
Total Mark (100)
10 marks for PLO10 Communication
10 marks for PLO8 Safety
80 marks for PLO2 Problem Analysis
All grammar /
spelling is
correct and
very well
written.
Name:
________________________________
ID:
________________________________
Semester: ________________________________
Circuit Theory 1
Experiment 5: RC Circuit
Objectives:
• To measure the time constant for RC Circuit
Safety Measures:
• Do not charge by higher current or higher voltage than specified.
•
Do not reverse placement of (+) and (-).
•
Do not solder directly to the capacitor. (for XH only)
•
Keep capacitors out of children’s reach.
•
Do not heat, disassemble, nor dispose of in fire.
•
Do not discharge by force.
•
In case of leakage or a strange smell, keep away from fire to prevent ignition of any
leaked electrolyte.
Introduction :
Capacitors are used in timing circuits in many devices. The time that your dome lights inside
your car stay on after you turn off your cars ignition at night is one example of how a capacitor
can be used to maintain the lighting long enough for you to remove the keys and collect your
things before exiting. The value we use to characterize these kinds of circuits is given by the time
constant defined as: τ = RC, where R is the circuit resistance (your dome light in this case) and C
is the capacitance, in Farads (F).
Equipment/Apparatus:
• Function Generator and probe
• Oscilloscope and probe
• Digital Multi meter
• Capacitor
• Inductor
• Resistor
Theory:
•
An RC circuit of a resistor and a capacitor or resistor. In most common electronics
devices, RC circuits charge and discharge very quickly, requiring a fast measuring
device such as an oscilloscope. Capacitors are nonlinear devices, the rate at which they
charge and discharge is a function of the amount of charge on capacitor. The
mathematical representation that describes the charging behavior is :
𝜏 = 𝑅𝐶 (for Capacitor)
Figure 1: Capacitor voltage versus time when the capacitor is charging
Instruction/Experiment Execution/Procedure:
1. Construct a series RC circuit using Multisim Live with an input from square wave clock
generator of 4.74 VP, with frequency of 500Hz with the following combination
o Capacitor value = 0.1uF, Resistor value 500
o Capacitor value = 0.1uF, Resistor value 1K
o Capacitor value = 0.1uF, Resistor value 1.5K
o Capacitor value = 0.1uF, Resistor value 3.3K
2. Record your result in Table 1.
❖ Calculations:
❖ Simulations:
➢ when capacitor value = 0.1uF, Resistor value 500.
➢ when capacitor value = 0.1uF, Resistor value 1k.
➢ when capacitor value = 0.1uF, Resistor value 1.5k.
➢ when capacitor value = 0.1uF, Resistor value 3.3k.
Result:
Table 1
Resistor (Ω)
Calculated Measured
𝑉
63.2%
of 𝑉
Time constant, 𝜏
Tolerance
Simulation
Calculated
50± 2.43
500
NA
4.74v
3v
52.243u
500 * 0.1u=
50u
1k
NA
4.74v
3v
101.95u
1k*0.1u=100u
100± 1.95
1.5k
NA
4.74v
3v
151.32u
1.5k*0.1u=150u
150± 1.32
3.3k
NA
4.74v
3v
333.79
330u
330± 3.79
Commented [OR2]: PLEASE EVERYONE SHARE YOUR WORK
WHEN YOU FINISH, DO NOT SUBMIT THE FILE WITHOUT ME SEEING
YOUR CALCULATIONS, YOU MISSED UP THE PAST LABS BECAUSE
YOU WOULD’NT LISTEN AND KEPT BEING UNCOOPARITVE.
Also I’ll do the simulations in multisim the pc versions just in case
Discussion:
Conclusion:
In a capacitor, the time required for a voltage to reach 63.2 % of the steady-state or full charge value.
When analyzing the amount of time it takes an RC circuit to reach a steady state condition, we must deal with
a term referred to as circuit’s time constant. Expressed mathematically, the time constant τ is as follows:
τ=RC
The circuit’s time constant τ represents the time required for the voltage across the capacitor to reach 63.2 %
of the steady-state or full-charge value. It takes four more time constants for Vc to reach a charge value
negligibly different from its full-charge values.
Revised date on March 2020 by ‘Emily’