LAB1_Alvaro_Grijalva_5495568

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Miami Dade College, Miami *

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3110

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Electrical Engineering

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Jan 9, 2024

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EEL3110 Circuit Analysis Lab 1 Group 10 Alvaro Grijalva FIU ID: 5495568 Gustavo Delgado FIU ID: 4892768 Supervisor: Yu Du September 16, 2023

FLORIDA INTERNATIONAL UNIVERSITY COLLEGE OF ENGINEERING AND COMPUTING DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING EEL 3110C LABORATORY COMPONENT FIRST ACTIVITY: Measurements on simple resistive circuits Set up of elementary resistive circuits, measurements of d.c. voltages, d.c. currents and do the computer simulations by Multisim. 1-Set up the following circuit. Measure and tabulate: ? 𝑎? , ? ?? , ? ?? , ? 𝑑? , ? 𝑎𝑑 and ? 1 Briefly explain your results. Theory and Purpose For this circuit It is important to review the principles of ohm’s law( V=IxR) and Kirchhoff's voltage law. Since this circuit is an open circuit, current does not flow through the resistor, I=0A. Results: Vab =0V, Vbc =0V , Vce =5V , Vde =0V, Vad =5V , I =0A

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Multisim: myDaq

Discussion and Analysis Theoretical results and simulation results using Multisim and myDaq match. Just like previously stated on theory and purpose we need to use ohm’s law and there is no current being applied to the resistor, so everything matches. The hardest part of setting the circuit and simulations was trying to understand the multisim software properly to make it work, but after trial and error, looking videos and the textbook I overcame the challenges. Theoretical Result Simulation Results(Multisim) (myDaq) Vab=0V Vab=0V Vbc=0V Vbc=0V Vce=5V Vce=5V Vde=0V Vde=0V Vad=5V Vad=5V I=0A I=0A

2- Set up the following circuit. Measure and tabulate: ? 𝑎? , ? ?? , ? 𝑑? , ? ?𝑑 , ? 𝑎𝑑 , ? 1 and ? 2 Briefly explain your results. Theory and Purpose This circuit is similar to the previous one. Once again ohm’s law and Kirchhoff's voltage law is crucial to set up this circuit ( V = I x R ). Mesh method is useful to measure this circuit by doing two loops. Since the circuit is still an open circuit, no current is applied to the resistor. I1=5v/1kΩ = mA and for I2=0A. Results: Vab =0V, Vbc =5V , Vdc =0V , Ved =0V, Vad =5V , I1 =5mA, I2 =0A.

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Multisim

myDaq Discussion and Analysis

Once again, the results from both theory and simulation are relative the same since there might a margin of error with some components used. This circuit proved to be more difficult due to the extra task of adding another resistor and have the results match. Theoretical Result Simulation Results(Multisim) (myDaq) Vab=0V Vab=0V Vbc=5V Vbc=5V Vdc=0V Vdc=0V Ved=0V Ved=0V Vad=5V Vad=5V I2=0A I2=0A I1= 0.5A I1=0.5A

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3- Set up the following circuit for ? = 5? . Measure and tabulate ? , ? 1 , ? 2 , ? 𝑑? , ? 𝑓? , and ? 𝑎? for the following conditions: a) ? 1 = 1𝑘Ω , ? 2 = 2 𝑘Ω , b) ? 1 = 2𝑘Ω , ? 2 = 1 𝑘Ω , c) ? 1 = 1𝑘Ω , ? 2 = 1 𝑘Ω , Briefly explain your results for each case. Theory and Purpose In this circuit It is important to consider that the resistors are in parallel, which mean we have to use another formula to add them. Rtotal= 1/R1 + 1/R2. Once we find the total resistance, we proceed to use ohm’s law to solve the rest of the circuit. Results: When a)? 1 = 1 𝑘 Ω, ? 2 = 2 𝑘 Ω, I =7.5mA, I1 =5mA, I2 =2.5mA, Vde =5V, Vfg =5V, Vab =5V. When b)? 1 = 2 𝑘 Ω, ? 2 = 1 𝑘 Ω, I =7.5mA, I1 =2.5mA, I2 =5mA, Vde =5V, Vfg =5V, Vab =5V.

When c)? 1 = 1 𝑘 Ω, ? 2 = 1 𝑘 Ω, I =10mA, I1 =5mA, I2 =5mA, Vde =5V, Vfg =5V, Vab =5V. Multisim a) b)

c) myDaq

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Discussion and Analysis This circuit was the most difficult to set up due to it being parallel. It took some to time to get it right and make it work but I followed the previous examples as guidance. The measurements match so theory and simulation go along just fine. Conclusion Statement: This lab reinforces our knowledge regarding Ohm’s law( V= I x R) and Kirchhoff's voltage law with respect to open circuits in exercises 1 and 2, and how resistors in parallel like in exercise 3(Rtotal= 1/R1 + 1/R2….1/Rn) should be solved. It is important to have a good start in this lab because it teaches the basics regarding how to solve problems by hand, the theoretical part and how to simulate them using Multisim and myDaq for better understanding circuits and its applications in the real world. It was also important to observe that the results on paper match our results in actual simulations.