ELD-302 LAB 1
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Jan 9, 2024
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Introduction to Multisim: Creating Simple Circuits and Making Basic Measurements
Kevin Austin
Thomas Edison State University ELD-302 Digital Electronics
Professor Sohail Anwar
December 17, 2023
Introduction
The primary objective of this lab is to familiarize myself with Multisim software. I’ve used Multisim in ELC-201, ELE-211 and ELE-212 so I am quite familiar with this software and its purpose. Nonetheless, for this lab I’ll be creating simple circuits and making basic measurements
using a DMM, function generator, and oscilloscope.
Experiments
Experiment 1
In experiment 1 I created a 12V series circuit with three resistors. R1= 1kΩ, R2=2kΩ, R3=3kΩ. I have attached three multimeters to measure voltage drops across R1, R2, and R3 and the sum has equaled 12V. I believe the purpose of this experiment is to get a familiarization with
creating circuits and using the appropriate test equipment. The sum of the multimeters measurements equal 12V
Experiment 2
For experiment 2, I created a 12V parallel circuit with three resistors. R1= 1kΩ, R2=2kΩ,
R3=3kΩ. I have attached three multimeters to measure current across all four branches. The current passing through V1 is equal to the sum of currents through R1, R2, and R3. The current of each branch equals the total which is 22 mA
Experiment 3
For this experiment I connected an oscilloscope to a function generator to perform timing
measurements. I set the function generator to square wave at 2000 Hz, with a 30% duty cycle, and an amplitude of 5 Vp. The oscilloscope was set to 200µs/Div to see the signal better. I ran the simulation and measured the high and low parts of the frequency and verified the duty cycle.
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Measure the durations of the high and low parts and verify the duty cycle.
High Part: 147.727 µs
Low Part: 352.273 µs
Duty cycle: 30%
Experiment 4
For this experiment I connected an oscilloscope to a function generator to perform timing
measurements. I set the function generator to sine wave at 5000 Hz, with an amplitude of 5 Vp. The oscilloscope was set to 100µs/Div. I started the simulation and verified the frequency and amplitude of the sine wave. Frequency: 5000 Hz
Amplitude: 5 Vp
Experiment 5
In this experiment I will be measuring the rise and fall time of the triangle wave in V/100µs. I connected an oscilloscope to a function generator, set the function generator to triangle wave at 5000 Hz, with an amplitude of 8 Vp, and the oscilloscope to 100µs/Div. I began the simulation and measured the rise and fall time of the triangle wave. These values are consistent with a 40% duty cycle. Rise Time: 81.439 µs
Fall Time: 119.318 µs
Duty Cycle: 81.439/(81.439+119.318)=40%
These values are consistent with a 40% duty cycle
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Conclusion In summary, I expanded my proficiency in utilizing the NI Multisim software, building upon my existing knowledge in previous classes. Within the program, I successfully constructed simple circuits using virtual components and test equipment in each experiment. Additionally, I conducted virtual simulations to gather the required data for measuring electrical quantities and timing.