Power amplifier is an electronic device, which is used to increase sound energy. In other words, the final stage which must driven a given load e.g mechanical indicator, a loudspeaker cathode roy tade, magnetic deflection coil, a transmitting accrual of a communication network. Power amplifier is also used in regulation power supplies, chopper amplifier, motor controller etc. In general the load will by its nature, demand a certain power from the amplifier and the out stage must be capable of delivering the power (large current or voltage swing). The preceding stage to the power stage are supposed to given the input to drive the power stage so that it can produce the load requirement.
In power amplifier a large portion of active device (transistor) characteristics is used (i.e there is large alternating input voltage or current to make efficient use of the device.
The economic importance of power amplifier is know to be useful in many aspect of both social and business activities. In the social activity, it is found that during occasions like public gathering and parties people us power amplifier to increase or enlarge their speech as to be audible. While the business activity: during business promotion, it is found that marketing agents use power amplifier for their advertisement: for notifying the public about combating.
TABLE OF CONTENTS DECLARATION i DEDICATION ii COPYRIGHT iii ACKNOWLEDGEMENTS iv ABSTRACT v LIST OF TABLES vii LIST OF FIGURES viii LIST OF ACCRONYMS AND ABBREVIATIONS ix OPERATIONAL DEFINITION OF TERMS x INTRODUCTION 1 1.0 Background of the Study 1 1.2 Solar Power System 2 1.3 Operating Principle of the DSTATCOM 3 1.4. Modelling of PV Array 5... Continue Reading
L (A CASE STUDY OF COMPUTER SCIENCE ND SOFTWARE LAB) CHAPTER ONE INTRODUCTION 1.1 BACKGROUND TO THE STUDY The use of renewable energy increased greatly just after the first big oil crisis in the late seventies. At that time, economic issues were the most important... Continue Reading
ABSTRACT This project work is aimed at developing an efficient Algorithm for the management of Electric Power network using fuzzy logic. The fuzzy logic model functions as a system operator in making decision for load shedding and transfer switching. The new technique uses the system data frequency variation, load variation and voltage variation... Continue Reading
CHAPTER ONE VIEWS OF PHILOSOPHERS THROUGH THE AGES Perhaps what has become so dominant in the affairs and the nature of man, almost exclusively, is the need to be treated well. What seemed as latent but constantly boiling in every individual of all ages is a quest to get a fair... Continue Reading
Wireless power transfer (WPT) technologies have been widely used in many areas, e.g., the charging of electric toothbrush, mobile phones, and electric vehicles. This project introduces fundamental principles of three WPT technologies, i.e., inductive coupling-based WPT, magnetic resonant coupling-based WPT, and electromagnetic radiation-based WPT,... Continue Reading
ABSTRACT-Power system planning is a vast and important issue for operation and expansion of power delivery. One of the basic objectives of planning is to determine the right schedule for investment in new devices which ensures secure and economic power delivery for predicted customer demand. System planning also addresses the question of reliable... Continue Reading
ABSTRACT This research work examines the factors affecting power outage in Nigeria. Constants Power supply is the hallmark of a develop economy. Any nation whose energy need is epileptic in supply. Prolongs her development and risk-losing potential investors. Nigeria with population of over 12 million people has for the... Continue Reading
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... Continue Reading
ABSTRACT A Low Power Indicator is a device that indicates by way of displaying light to indicate the level or strength of electrical power in a given circuit at a particular time. The transistors T1, T2, T3 are low power transistors that control the flow of electron in the circuit VR1 is employed to vary the frequency of the power. ... Continue Reading