ABSTRACT This project the design an construction of fire alarm was carried out with deep intensive and extensive research work my aim and objective in the price of work is to produce a standard device or electronics that will inform the security about a fire outbreak in the company or house for a quick reaction/action. In this project I shade more light on the basic principles of operation the design and construction procedures the series of test conducted and so on to ensure that it work e...
ABSTRACT This project intended to simplify the description and working principle of FM wireless microphone, which works on a fixed frequency modulation (FM) band. TABLE OF CONTENTS Approval Sheet Title Page Dedication Acknowledgement Abstract CHAPTER ONE 1.0INTRODUCTION 1.1Aim and Objective of Investigation CHAPTER TWO 2.0Transmitter 2.1Ionospheric Propagation 2.2Modulation 2.3Needs for Modulation Process CHAPTER THREE 3.0Frequency Modulation 3.1Characteristic...
Amplifiers, which are devices that increase the gain of an audio signal, dominate modern audio technologies. In this project, we designed and built an audio amplifier from scratch in order to demonstrate that such a key device can be constructed using basic electrical engineering principles.After performing major circuit calculations by hand, we modeled our circuit in PSpice, which is computer software that analyzes electrical circuits. In particular, we studied the variance that using budget...
ABSTRACT The project work is on the design and construction of automatic two lane traffic light control. This system is based on digital electronics. It employs an astable multivibrator which is the clock generator that sends the clock into a time sequencing generator using a decade counter with ten (10) decodes output that has it’s binary corded decimal (BCD) output into a diode or gate that sends logical data’s into a transistor switching circuit that switches the lamps that...
ABSTRACT This project is titled the design and construction of a DC to AC inverter system. It is designed to meet up with the power demand in the offices and in homes in the absence of power supply from the national supply authority, NEPA. In order words the device / item serves as a substitute for NEPA which almost monopolises the power supply to people. It is designed in such a way that it will take up 12v DC from battery and inverts it to an output of 220v, 50H2 AC. It makes no noise durin...
PREFACE The aim of this project is to construct power amplifier. The system is expected to amplify. The major components in the circuit is the integrated circuit (IC JRE with some circuit elements for the normal operation of the circuit. So as to amplifier an output, the general construction dealt with in the chapters. The levels of treatments presuppose a detailed knowledge of electronics and basic electric circuit such as for part of most technical institute. The report should be va...
ABSTRACT The design of this 30 volt Audio Amplifier with volume, table and bass control which was done wit ht he combination of five (5) different circuit which are interconnected during or after construction. This amplifier operates with an option of a left and right channel. The combination of these circuit include this main amplifier circuit (which consist of a left and right channel, two treble and bass pre – amp circuit and the power supply circuit. The main amplifier circuit c...
ABSTRACT This project present a practical demonstration of how to carryout the wiring of a two bedroom bungalow, using PVC conduit system. In recent times surface wiring is gradually giving way to conduit wiring where much of the cable are concealed. PVC pipes are used because of it cost friendliness, compared to metal conduit. In carryout this construction a careful attention is given to the IEF regulations. Calculations are made for current consumption, space factor, diversity factors and o...
ABSTRACT The project work on construction of loud speaker involves some critical research and study concerned electromagnetic induction effect in transducers like loud speaker and its associated parameter required to chose a very good one this parameters are the power rating of loud speaker and the coil. The sizes were also put into consideration. During the packaging of the loud speaker box a signal conditioning R.C network was build and coupled into the system which take care of the trebl...
ABSTRACT As technological advancement has been on the increase in our society many have fallen in love with technology and world want to have a feel in virtually to every thing they do. A design has been made in combination of electrical and electronics to change over from one power sources to the other automatically and trip off generation after 40 seconds without going through the point for manual operation. This project writing were organized in according way for easy understanding ...
ABSTRACT As the zeal for change over on public power supply and stand- by generator increases; Engineers have researched deeply into the different ways and methods of achieving power changeover both manual and automatic types. It may no be considered as serious issue in some places where supply is up to 90% constant or where intermittent outage cause no great damage. However, places like the business confers, industrials and cold rooms need almost 100% power supply, and also hospitals and use...
ABSTRACT This project write up of a step – down transformer from 220v to 24v:12v, this is to expose what a transformer is all about and its important and uses. The aim of the project, step-down transformer is to show Electrical and Electronics Engineering, could step-down the voltage from 220v to 24:12v, and fro this project write up. They are divided into chapter by chapter. 0.1Chapter one is the introduction to a step – down transformer from 220v to 24:12v. 1.1Back ground...
ABSTRACT This project work is on the construction of an F.M transmitter this system consists of four discrete modules namely the audio frequency (AF) amplifier (class A) the modulator the master oscillator and the radio frequency (RF) amplifier (ClassC) these formed the conventional events for building FM transmitter here the signal (from the microphone) is fed into the (AF) for amplification then to the modulator which combines the modulating signal with the carrier wave transports the mod...
ABSTRACT The practical importance of a battery charger in today world cannot be over emphasized. This is so as those batteries accumulators are immensely needed by out auto mobile and in science laboratories. This thesis describes the methodical approach to the design and construction of any battery charger. However the procedure fro developed cover the construction of battery charger for battery sizes ranging from 6 voltage to 24volatge (heavy duty) batteries. The prototype of a batter...
ABSTRACT This project, 12v battery charge consist of few chapters, deal extensively with the design and construction of a batter charge which is capable of charging a 12v battery. The introductory chapter goes a long why in defining the battery charger and explanations of the mode of operations will be death with as we proceed. TABLE OF CONTENT Construction of a 12v Battery Charger Approval Dedication Acknowledgement Abstract CHAPTER ONE 1.1 Introduction CHAPTER TWO ...