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    A Guide to Electronic Maintenance and Repairs
    A Guide to Electronic Maintenance and Repairs
    A Guide to Electronic Maintenance and Repairs
    Ebook86 pages1 hour

    A Guide to Electronic Maintenance and Repairs

    By Yunusa Ali S. and A.M. Yusufu

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    About this ebook

    A Guide to Electronics Maintenance and Repairs provides basic coverage of some electronics components and devices. Also, the characteristics and applications of general purpose of electronics component, with simple, practical implementation circuits discussed. The book emphasizes on the basic concept of electronics and circuit examples, written in a simple style, and motivates the students toward electronics maintenance. A Guide to Electronics Maintenance and Repairs is the better standard reference available for both technicians and practicing engineers.
    LanguageEnglish
    PublisherPartridge Publishing Singapore
    Release dateAug 5, 2014
    ISBN9781482890471
    A Guide to Electronic Maintenance and Repairs
    Author

    Yunusa Ali S.

    I received my Higher National Diploma in Electronics and Telecommunication in 1998 from Kaduna Polytechnic, and P(HND) in Electronics and telecommunication in 2000 from Kaduna Polytechnic, and M.Eng(Elecrtrical) in 2004 from Bayero University Kano, Nigeria. Currently, i am pursuing Ph.D.degree in Electronic engineering at University Putra Malaysia (UPM).My research interests include Robotic mapping, Electronic Engineering, Laboratory Equipment and Renewable Energy. I live in Nigeria as a Teacher in Kaduna polytechnic, married with three kids. I have been teaching since since 1999 to date, it is the course material that i have a dream to convert it to a Book

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      Book preview

      A Guide to Electronic Maintenance and Repairs - Yunusa Ali S.

      Copyright © 2014 by A.M. Yusufu and Yunusa Ali Sai'd.

      ISBN:                  Softcover                            978-1-4828-9046-4

                            eBook                                978-1-4828-9047-1

      All rights reserved. No part of this book may be used or reproduced by any means, graphic, electronic, or mechanical, including photocopying, recording, taping or by any information storage retrieval system without the written permission of the publisher except in the case of brief quotations embodied in critical articles and reviews.

      Because of the dynamic nature of the Internet, any web addresses or links contained in this book may have changed since publication and may no longer be valid. The views expressed in this work are solely those of the author and do not necessarily reflect the views of the publisher, and the publisher hereby disclaims any responsibility for them.

      Toll Free 800 101 2657 (Singapore)

      Toll Free 1 800 81 7340 (Malaysia)

      www.partridgepublishing.com/singapore

      Contents

      Dedication

      Acknowledgements

      Overview

      Chapter One

      Function and Values of Resistors

      Chapter Two

      Rating and Applications of A Capacitor

      Chapter Three

      The Coils and Transformers

      Chapter Four

      Types of Transistors andTheir Application

      Chapter Five

      Semicondutor Diode Types and Application

      Chapter Six

      Sample of Thyristors, triacs, diacs

      Chapter Seven

      Integrated circuits(IC)

      Chapter Eight

      Dynamic Speakers, Microphones and headphones

      Chapter Nine

      Components Opto-electronics

      References

      About the Author

      Dedication

      This book is dedicated to Kaduna Polytechnic, Kaduna and Hussaini Adamu Fedearal Polytechnic Kazaure.

      Acknowledgements

      The Authors gratefully acknowledge Departments of Electrical and Electronics Engineering of Kaduna Polytechnic and Hussaini Adamu Federal Polytechnic Kazaure for their support and cooperation.

      Overview

      The book offers a good overview of Electronics maintenance and repairs within the curricular, particularly for Diplomas, Higher National Diplomas (HND) and Engineers, who wish to undertake cleaning, basic maintenance, and minor repairs of Electronics devices. This book covers devices and components related to equipment like test instruments and digital equipment. The reader will quickly learn the systematic procedures for identifying causes of faults and the practical methods of repairing them. The content is according to the National curriculum standard (NBTE and NUC) Though most Engineers may still find extensive repairs beyond their interest and ability, this books can help them in maintenance and will teach them more about Electronics maintenance. The book is comprehensive, which takes care of Electronic components and its practical applications. New trend information about components is included. Readers will find the indexes and illustrations (both photos and diagrams) very useful.

      Chapter One

      FUNCTION AND VALUES OF RESISTORS

      1.1 RESISTOR

      This chapter gives the basic and fundamentals about resistors as passive components. Resistors are among the general purpose components used in the electronics functional circuitry. They are two-terminal passive electrical components that implement electrical resistance as a circuit element. They act to reduce current flow, while acting to lower voltage levels within circuits. Resistors such as those found in thermistors, varistors, trimmers, photo resistors and potentiometers may have fixed resistances or variable resistances.

      The current through a resistor is directly proportional to the voltage across its terminals as represented by Ohm’s law:

      42842.png

      In such a way that; I is the current through the conductor in units of amperes, V is the potential difference measured across the conductor in units of volts, and R is the resistance of the conductor in units of ohms (symbol: Ω).

      The resistance of a resistor is the ratio of the voltage applied across its terminals to the intensity of current in the circuit, and this can be assumed to be a constant (independent of the voltage) for ordinary resistors working within their ratings given during manufacture. Different values of resistors are identified by means of color coding normally indicated on their surface.

      Resistors provide specific values of current and voltage in a circuit prepared to work in current control field. Different designs are available depending on the manufacturer but ratings differ according to application. The significant work done by resistors is to create specified values of current and voltage in a circuit. Figure 1.1 below displayed assorted resistors. The resistors are on millimeter paper, with 1cm spacing to give some idea of the dimensions. Here, figure 1.1a shows some low-power resistors, with power dissipation below 5 watt. Most are cylindrical in shape with a wire protruding from each end for connection to circuit while figure 1.1b shows some higher-power resistors with power dissipation above 5 watt.

      42861.png

      Figure 1.1: a Some low-power resistors

      (Courtesy of microElectronika)

      42868.png
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