Lab1Report_Matney

docx

School

Florida State University *

*We aren’t endorsed by this school

Course

3112L

Subject

Electrical Engineering

Date

Feb 20, 2024

Type

docx

Pages

Uploaded by AdmiralSkunkPerson964

FAMU-FSU College of Engineering Department of Electrical & Computer Engineering EEL3112L – Advanced Circuits with Computers Laboratory LAB REPORT 1 FALL 2023 Experiment: 1 – Introduction to NI MULTISIM and ELVIS III Date: September 12, 2023 Author: Oriana Matney List of partners: Luis Victores Instructor: Dr. Jinyeong Moon TA: Ahmad Abdelhadi

Contents Abstract ............................................................................................................................................ 2 1. Introduction .................................................................................................................................. 2 2. Experimental procedure ............................................................................................................... 3 3. Results .......................................................................................................................................... 5 4. Discussion .................................................................................................................................... 6 5. Conclusion and Recommendations .............................................................................................. 6 6. References .................................................................................................................................... 7 Abstract : The purpose of this experiment was to expose students to NI MULTISIM and ELVIS III. This process involved measuring resistors and capacitors, then creating a circuit to analyze graphically. Firstly, the students measured the component values of two resistors and two capacitors, then compared them to the theoretical values. After this was established, students were guided through the construction and graphical analysis of a RC low-pass filter circuit through the use of a function generator and oscilloscope. The key finding from this analysis was the half-power frequency of the circuit. Another experiment in this lab exposed students to the frequency response of the same circuit but through the use of a bode analyzer. The students generated graphical data of the RC circuit used in previous experiments to measure the 3dB cutoff frequency. The key finding from these frequency response experiments was to teach the students how to manipulate the bode analyzer to read the half-power frequency of an RC low- pass filter. While there may not be any large takeaways from this experiment, it was fundamental to the students learning of navigating NI MULTISIM and operation of ELVIS III. 1. Introduction A Problem Statement: Students have little to no experience with NI MULTISIM and ELVIS III The Purpose and Justification of the Experiment: The purpose of this experiment was to expose students to NI MULTISIM and ELVIS II. This benefits the students’ future educational careers. The Scope of the Experiment: This experiment covered a few ideas surrounding a RC low-pass filter. Part A introduced the students to the tools provided by the NI ELVIS III prototype board used to measure component values. Part B of the lab guided students through setting up a circuit on the prototype board as 2

well as using the built in function generator and oscilloscope to take measurements. The last part of the lab, C, taught the students how to use and read the NI ELVIS III bode analyzer. 2. Experimental procedure The hardware for this experiment consisted of two resistors, two capacitors, NI ELVIS III prototype board, and a computer capable of running the associated NI ELVIS III software. To start this experiment, students were required to use the built in digital multimeter (DMM) and corresponding software to measure the resistances of two resistors and capacitances of two capacitors. The students were to place the component on the prototype board and use two alligator clips to measure resistances after applying power to the board. After each experiment was conducted, it was expected that the students turn the power off. As for the capacitors, the students were to place the components between the DUT+ and DUT- terminals and apply power. Part B required the students to build the circuit as shown in Figure 1. Figure 1: RC Filter for AC Characterization After configuration the students were to open the function generator and oscilloscope located within the ELVIS III software and set each window to the following settings. 3

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

Figure 2: Settings for Function Generator of Part B Figure 3: Settings for Oscilloscope of Part B The students were to run each software program and autoscale the oscilloscope to view a more digestible wave. By varying the input frequency on the function generator, the students then calculated the 3dB bandwidth of the filter from the oscilloscope. The students then opened he bode analyzer, keeping the same circuit, and set it to the following settings. 4

Figure 4: Settings for Bode Analyzer of Part C The students then ran the analyzer and measured the -3dB frequency and the corresponding phase shift. 3. Results Part A Measured Value Actual Value R1 2.1669 KOhm 2.2 KOhm R2 0.09967 KOhm 0.1 KOhm C1 10.01 uF 10 uF C2 4.69 uF 4.7 uF Part B 5

Part C It should be noted that there was an unexplainable reason for the stop frequency to cap at 200k instead of 1M. This caused an error in the reading. Because this circuit is a low-pass filter, the expected gain plot would be a platued line until a certain point and then a steadily decreasing line, with the -3dB point around the start of the decreasing line. For the phase plot, the line would start platued again but would have a more dramatic decrease before leveling out again. The phase shift frequecny point would be somwhere in the middle of the steep decline. 4. Discussion The results of this lab were very similar to the expected results. The purpose of this lab was to introduce students to the NI MULTISIM and ELVIS III prototype board. This was done through guiding students through the steps of measuring resistors and capacitors. The expected and measured values were close to each other and expected to have a small amount of error. This introduction also occurred through teaching the students how to use the function generator, oscilloscope, and bode analyzer onboard the ELVIS III. The function generator and oscilloscope 6

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

readings asked the students to find the half-power frequency of the circuit, which was completed without issue. The bode plot, however, did cause issues for the students. There was an issue with the stop frequency of the analyzer that led to discrepancies in the plot. The plot was completely wrong because of this, and the Lab TA was notified. Overall, this lab served its purpose of introducing students to NI MULTISIM and ELVIS III. 5. Conclusion and Recommendations This lab did well to complete its goals of familiarizing students with NI MULTISIM and ELVIS III. This was completed through experiments of measuring component quantities and completing different graphical analyses of an RC low-pass filter. This experiment was extremely successful in its purpose and should not be redesigned. References [1] B.W. Kwan, “Introduction to NI MULTISIM and ELVIS III”, website: https://famu-fsu- eng.instructure.com/courses/11783/assignments/70484 , downloaded Sept. 5, 2023. 7