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 ...
ABSTRACT The battery which has always serve as a sources of electrical current has in the past been invalid and inmost cases seen as monument after implicating as battery wound have to be brought over and over again the implicating has been that of lot of money is been spent for this purpose we give appraise for the advancement of technology which today had led to the production of battery which could be made functional after it energy may be used up this has been made possible by rechargin...
ABSTRACT The construction of a 3-phase motor operation indicator exposes the techniques and skills employed in the construction of complex electrical circuit. The combination of contactors overload relay and other component to achieved the desired goal is diagrammatically and descriptively treated of practical knowledge TABLE OF CONTENTS Title page Approval page Dedication Acknowledgement Abstract Table of contents CHAPTER ONE 1.0Introduction 1.1Background 1.2Aim and obje...
ABSTRACT Audio loudspeaker (output transducer) is on of the most essential and powerful device used in telecommunication system. This is device capable of converting electrical signal into sound and vice versa. It is made up of few time of non-magnetic wire wound on a light cylindrical former that is mounted so that it can move freely insides the magnetic field of a strong permanent magnet. The speaker cone it attached to the voice coil and attached with a flexible mounting to outer ting of...