UNIVERSITY OF WEST ATTICA
SCHOOL OF ENGINEERING
DEPARTMENT OF COMPUTER ENGINEERING AND INFORMATICS

University of West Attica · Department of Computer Engineering and Informatics

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Electronics

Resistance and Oscilloscope

Vasileios Evangelos Athanasiou
Student ID: 19390005

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Supervision

Supervisor: Panagiotis Giannakopoulos, Professor

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Supervisor: Ioannis Amorginos, Applications Lecturer

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Co-supervisor: Eleni Tsalera, Academic Scholar

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Co-supervisor: Michalis Diamantopoulos, Applications Lecturer

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Athens, November 2022

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README

Resistance and Oscilloscope

This README provides an overview of Lab 1, submitted for the Electronics course at the University of West Attica. The lab focuses on resistor measurements, D.C. voltage, and A.C. signal analysis.

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Table of Contents

Section	Folder / File	Description
1	assign/	Assignment documents
1.1	assign/Exercise-1st-Resistance-and-Oscilloscope.pdf	Assignment instructions (English)
1.2	assign/Άσκηση-1η-Αντιστάσεις-και-Παλμογράφος.pdf	Assignment instructions (Greek)
2	components/	Lab components and equipment photos
3	docs/	Theory and reference documents
3.1	docs/Resistance-and-Oscilloscope.pdf	Theory (English)
3.2	docs/Αντιστάσεις-και-Παλμογράφος.pdf	Theory (Greek)
4	multisim/	Multisim projects and screenshots
4.1	multisim/Screenshots/	Screenshots of Multisim simulations
4.2	multisim/*.ms14	Multisim project files
5	photos-in-lab/	Photos of lab setup and measurements
6	visio/	Visio diagrams for circuits and measurements
7	README.md	Project documentation
8	INSTALL.md	Usage instructions

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1. Equipment & Components

• Analog & Digital Training System: MCP M21-7000A
• Breadboard: M21-7000A
• Oscilloscope: HAMEG HM203-5
• Digital Multimeter: MT8045
• Resistors: 1 kΩ, 27 kΩ, 39 kΩ

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2. Project Objectives

1. Resistor Resistance Measurement
   Calculate and measure resistor values using:

   • Color codes
   • Theoretical formulas
   • Simulation software

2. D.C. Voltage Measurement
   Analyze and measure direct current both theoretically and experimentally.

3. A.C. Measurement
   Measure signal period and calculate frequency.

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3. Key Findings – Resistance Measurement

3.1 Theoretical & Simulative Analysis

The equivalent resistance for resistors in parallel was calculated.

For a 1 kΩ and a 27 kΩ resistor in parallel:

$$ R_{\text{eq}} = \frac{1 \times 10^3 \cdot 27 \times 10^3}{1 \times 10^3 + 27 \times 10^3} \approx 0.97 \text{ kΩ} $$

• Simulation Result (Multisim): 964.286 Ω

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4. Experimental Observations

Actual measurements differed slightly due to resistor tolerance ±5% (gold stripe):

• 1 kΩ Resistor: 0.9893 kΩ
• 27 kΩ Resistor: 27.12 kΩ
• 39 kΩ Resistor: 38.43 kΩ

These results confirm that both theoretical calculations and simulations closely match practical measurements.