Solved by verified expert:Lab report format: Your lab report should include the following: 1. Front cover: front cover shall contain
a. Name
b. ID
c. Lab Partners
d. Date (Lab performed)
e. EE 282 (with day and time) 2. Objective: Clearly state the objective of the laboratory in your own words. 3. Procedure: Provide a summary of the procedure used in the lab. Do not copy the
procedure from the lab manual. Any change in the procedure while conducting the lab to
the procedure given in the lab manual should be noted 4. Recorded Data: Whenever possible use tables and figures to provide all the recorded data.
The lab instructor may request that a student repeat the lab if any of the required data are
missing. 5. Post Lab: If post lab questions are given they must be answered in this section. These
shall be answered after the lab is over. 6. Conclusion: A brief conclusion shall be presented by the student. The conclusion should
be based on the observations and recorded data.
ee_282_lab_6__1__2_.pdf
example_lab5.docx
lab_6_2018_03_26_21.33.46_20180326213435.pdf
lab_6_detailed_version.pdf
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EE 282 – Circuit I
Lab 6
Maximum Power Transfer
Name ______________________________
Concepts: In this lab we will be learning about Maximum Power Transfer Theorem. We
will verify this using independent sources.
Part 1: Consider the following circuit, and first calculate the Thevenin equivalent circuit
and record the value of Vth and Rth in the table below.
Equipment: handheld digital multimeter, NI elvis system, 3 resistors, decade resistance
box
The nominal (but not exact; you need to measure the actual) values of the resistors are:
R1 = 1.00 k
R2 = 100
R3 = 220
Use the handheld multimeter to measure and record the actual values of the resistors.
R1 _________ R2 _________ R3 _________
Build the circuit on your breadboard and connect the elvis power supply as shown in Fig. 1.
XMM1
1
R1
R3
2
V1
5V
3
R2
0
Fig. 1
Calculated Value
Measured Value
Percent Deviation
Vth
Isc
Rth
Add a load resistor using the decade resistance box from node 3 to node 0 (reference), and
determine the delivered power to the load for the values listed on the following table.
RL
Measured
Calculated RL
Calculated PRL
(using =
2
)
10% RTh
50% RTh
100% RTh
150% RTh
200% RTh
300% RTh
Part I1: Now modify the circuit as shown below (R3 is removed from the circuit), and
calculate the Thevenin equivalent circuit and record the value of Vth and Rth in the table
below.
Equipment: handheld digital multimeter, NI elvis system, 3 resistors, decade resistance
box
The nominal (but not exact; you need to measure the actual) values of the resistors are:
R1 = 1.00 k
R2 = 100
R3 = 220
Use the handheld multimeter to measure and record the actual values of the resistors.
R1 _________ R2 _________ R3 _________
Modify the circuit on your breadboard as shown in Fig. 2.
XMM1
1
R1
V1
5V
2
R3
R2
0
Fig. 2
Calculate and measure the values of Vth , Isc , Rth .
Calculated Value
Vth
Isc
Measured Value
Percent Deviation
Rth
Add a load resistor using the decade resistance box from node 2 to node 0 (reference), and
determine the delivered power to the load for the values listed on the following table.
RL
Calculated RL
Measured
Calculated PRL (using =
10% RTh
50% RTh
100% RTh
150% RTh
200% RTh
300% RTh
Part II1: Comment on the difference between the results of the above circuits.
2
)
EE 282 – Circuit I
Lab 5
Thevenin’s Theorem
Part 1: With one independent voltage source
Objective: Testing the concept of Thevenin’s Theorem.
Procedure:
•
•
•
Turn on the NIELVIS System.
Calculate and check the resistors values using Handheld multi-meter or the digital multimeter.
Measure the exact values of the resistors. (As stated previously)
Connect the +5v power supply on NI Elvis board to the breadboard using connector
wires.
Connect the resistors as shown in the fig.1 below
•
Measure the open circuit voltage, short circuit current and the resistance of the circuit.
•
•
Fig.1
Recorded Data:
MEASURED VALUE RESISTORS
R1= 1.00kΩ
R1= 988Ω
R2= 100Ω
R2= 100Ω
R3= 220Ω
R3= 217Ω
R4= 1.00kΩ
R4= 988Ω
Calculated Values
2.5V
3.516mA
734.796Ω
Vth
Isc
Rth
Measured Values
2.49V
3.32mA
734.23Ω
Post-Lab:
Calculate by hand or by using Multisim the Thevenin equivalent circuit, and the value of VOC and REQ in your
notebook. Then, use the Digital Voltmeter and Ammeter to measure the open circuit voltage and short circuit
current. Calculate the Thevenin Equivalent circuit from these measurements and compare the results with those
you obtained by calculation. (Find the difference in %).
Difference in Percentage
0.4%
5.57%
0.077%
Part 2: With two independent voltage sources
Procedure:
•
•
•
•
•
Fig.2:
Set up the NIELVIS system.
Measure and find the values of the resistors using the handheld Multi-meter or the
digital multi-meter.
Connect the +5v and -10V power supply on NI Elvis board to the breadboard using
connector wires.
And connect the resistors as shown fig 2.
Measure the open circuit voltage, short circuit current and Resistance of the circuit.
Recorded Data:
MEASURED VALUE RESISTORS:
R1= 1.00kΩ
R1= 988Ω
Vth
Isc
Rth
R2= 100Ω
R2= 100Ω
R3= 220Ω
R3= 220.8Ω
Calculated Value
9.081V
29.502mA
307.809Ω
R4= 220Ω
R4= 220.8Ω
R5= 1.0kΩ
R5= 988Ω
Measured Value
9.0724V
29.68mA
315.00Ω
Post-Lab:
Use the Digital Voltmeter and Ammeter to measure the open circuit voltage and short circuit
current. Calculate the Thevenin Equivalent circuit from these measurements and compare the
results with those you obtained by calculation. (Find the difference in %).
Difference in Percentage
0.09%
Conclusion:
0.60%
2.28%
In both part of the experiment (while using the NIELVIS app) we were able to find
the value of the resistors and with the given values we were able to build up the
circuits (like in fig.1 & fig.2) to find the measured values & calculated values.
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