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

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Circuit Theory

Coordination

Vasileios Evangelos Athanasiou
Student ID: 19390005

GitHub · LinkedIn

Supervisor: Christos Kampouris, Laboratory Teaching Staff

UNIWA Profile

Co-supervisor: Georgios Antoniou, Laboratory Teaching Staff

UNIWA Profile

Athens, June 2022

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Project Overview

This document is a laboratory report for the Circuit Theory course within the Department of Informatics and Computer Engineering at the University of West Attica.

The project focuses on the study and analysis of the resonance effect in RLC circuits. It explores the behavior of resistors, inductors, and capacitors when connected in series and parallel configurations across varying frequencies.

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Table of Contents

Section	Folder	Description
1	assign/	Assignment material for the Circuit Theory course
1.1	assign/circuit theory rev2021_EXERCISE_4th.pdf	Assignment description in English
1.2	assign/θεωρία κυκλωμάτων rev2021_ΑΣΚΗΣΗ_4η.pdf	Assignment description in Greek
2	docs/	Documentation on circuit coordination
2.1	docs/Coordination.pdf	English documentation on coordination concepts
2.2	docs/Συντονισμός.pdf	Greek documentation on coordination concepts
3	multisim/	Circuit simulation files
3.1	multisim/CoordinationParallel.ms14	Multisim file for parallel coordination circuit
3.2	multisim/CoordinationSerial.ms14	Multisim file for series coordination circuit
4	README.md	Repository overview and usage instructions

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Key Contents

The report is structured into:

• Theoretical Analysis
• Software Simulations using Multisim
• Experimental Laboratory Results

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1. RLC Series Circuit

Theory:
Analysis of the frequency at which the inductive reactance (Xₗ) and capacitive reactance (Xc) cancel each other out.

Key Observations:

• The impedance (Z) becomes equal to the ohmic resistance (R) at resonance.
• Maximum current flow occurs at the resonant frequency.
• Overvoltage phenomena are observed across the capacitor and inductor.

Formula Used:

$$ f_r = \frac{1}{2\pi\sqrt{LC}} $$

Where:

• (f_r) = resonant frequency
• (L) = inductance
• (C) = capacitance

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2. RLC Parallel Circuit

• Theoretical solutions and simulation results for parallel RLC configurations.
• Detailed analysis provided in the report (pages 12–17).

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Laboratory Equipment

The experimental work utilized the following tools:

• Multimeters (Analog and Digital)
• Oscilloscope
• Breadboard
• Passive Components:
  • Resistors
  • Capacitors
  • Inductors

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Installation & Setup Guide

This repository contains laboratory simulations and analysis for Circuit Theory, focusing on RLC series and parallel circuits and their resonance behavior.

All simulations are implemented in NI Multisim.

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Prerequisites

Required Software

• NI Multisim 14 (or later)
  Ensure your system meets the requirements for running .ms14 files.
  Download from NI Multisim.

Optional Software

• PDF Viewer for documentation: Coordination.pdf / Συντονισμός.pdf

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Installation Steps

1. Clone the Repository

git clone https://github.com/Circuit-Theory/Coordination.git

2. Navigate to Project Directory

cd Coordination

Ensure the following folder structure exists:

assign/
docs/
multisim/

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Multisim Simulation Files

The repository includes two key simulation files:

File	Description
multisim/CoordinationSerial.ms14	RLC series circuit simulation
multisim/CoordinationParallel.ms14	RLC parallel circuit simulation

3. Open a Simulation in Multisim

• Launch NI Multisim.
• Select File → Open.
• Navigate to the multisim/ folder.
• Open the desired .ms14 file (series or parallel circuit).
• Wait for the circuit topology to load.

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Open the Documentation

1. Navigate to the docs/ directory
2. Open the report corresponding to your preferred language:
   • English: Coordination.pdf
   • Greek: Συντονισμός.pdf