Download Tag: DESIGN AND CONSTRUCTION

ABSTRACT The main aim of any electric power supply in the world is to provide uninterrupted power supply at all times to all its consumers. Although, in developing countries, the electric power generated to meet the demands of the growing consumers of electricity is insufficient, hence power instability and outage. Power instability or outage in general does not promote development in the public and private sector. The investors do not ...

ABSTRACT This thesis guides the account for the design and construction of a 100w audio power amplifier with the objective of producing a reliable and cheaper amplifier that can be used in a household or stage. The audio power amplifier was constructed with electrical/electronic components such as resistors, capacitors, transformer, transistors and vice-versa. Many tools/instruments like soldering iron, multi-meter and so on were used. The 100w audio power amplifier when ...

ABSTRACT This project describes the methodical approach to the design and construction of control system for direct-on-line starting of induction machine. The procedures developed covers the construction of D.O.L stated for lower horse power motors. The prototype of this direct-on-Line starting of induction machine has been implemented following the methodical approach outlined in this project and its operational test and result are quite satisfactory. Adequate care has been taken in ...

ABSTRACT The most industrial and commercial process are depedent on electrical power in the event of power interpretation, the change-over of power supplied by a public utility to a generator is usually performed manually, often resulting in wastage time. Moreover, mechanic and some house hold appliances damages occurs because of human errors. These can cause significant losses. This paper presents a design and construction of an automatic single phase change ...

CHAPTER ONE 1.0     INTRODUCTION 1.1            PREAMBLE Technological development in the third world nation like Nigeria should incorporate finding solutions to seemly small problems like while trying to plan for the big ones. This statement is necessary given that Nigeria having been able to launch NigeriaSat I and about to launch another code named NigeriaSat 2, would be said to be progressive in their approach to technology acquisition and indeed retrogressive applying same ...

CHAPTER ONE  INTRODUCTION BACKGROUND OF THE STUDY As the quest for change over on public power supply and stand by generation increase. Engineering have researches deep into the different methods of achieving to both manual and automatic types. It may not be taken seriously in some places where power supply is up to 90 constant or where intermittent outage causes no great damage. However, place where they have business centers, ...

ABSTRACT An intercommunication system is nothing but the communication between two or more persons not close to one another. This does not mean we should categorize telephones, fax, teleprinters, telegraphs etc. an example of intercom system sine they are used in communication between people. Infact, intercom involves short distance places. It is limited in electronics, offices, and hospitals. The intercom system under is a three way station type. This means ...

CHAPTER ONE 1.1     INTRODUCTION Change over switch is a device used to switch off a power supply and subsequently switch on another power source. Basically it is aimed at switching on a more convenient power supply to the load. Since it switches on power to the load precaution has to be taken while choosing the type of change over switch. Also size, arcing control are put into consideration in the choice. ...

CHAPTER ONE INTRODUCTION 1.1     BACKGROUND OF THE STUDY Fire detection system are safety system. They monitor rooms and buildings continuously for indication of fire outbreak and give alarm directly if one occurs. Both the British Factory Acts 1961 and the officers shops and railway premises Acts 1963 stiputed minimum requirements in the case of fire that there shall be clear and audible warning throughout the building. Also, an earlier statutory requirement ...

ABSTRACT This inverter is designed to convert ac power from higher capacity dc batteries to A.C voltage (power) for systems that use ac only. It uses 24v battery D.C times 2, which is converted by the MOSFET to A.C. it is used I.C. with the model number SG3525 where the four MOSFET is connected to it. It consists winding which enable to determine the number of wattage. The inverter consist ...

CHAPTER ONE INTRODUCTION 1.1 BACKGROUND OF THE STUDY As the growing population of human race widens the gulf between energy supply and energy demand, the imbalance in energy availability sent researchers into excavating for a way of settling this age long squabble. A lasting solution is vested on alternative use of the renewable energy source, a project that is yet to be widely applied. Hence, the continuation of the unsettled yearns for sufficient power. Consequently, ...

ABSTRACT 500VA power inverter system is a DC to AC conversion system of 500VA power rating and expected to carry around 400 watts load. It provides power to electronic and electrical appliances such as radio sets, TV DVD/VCD, computers, fans and lighting. The design was conceived and put down as block diagram. Corresponding circuit diagrams for each black box were sourced and drawn. The component values according to desired specifications ...

ABSTRACT During the invention of security system alarms, in the early 80s technology of system shadow which involves lighten and sensing of objects was at that age found during their experiments using a special material know as light dependent resistor which its family lies in the resistance serials. The development of technology in the world today has yielded many design purposes to inventors depending in the requirements of their design. ...

ABSTRACT This is a technical report presented on the design and construction of an Automatic Phase Selector. In the construction work, an ordinary level knowledge of electronics principles are observed. We aimed at presenting a practical aspect of the subject and then providing the argument necessary for a thorough understanding. The reliability of the specimen was estimated after construction and testing to ensure steady state stability. The work is organized ...

CHAPTER ONE INTRODUCTION BACKGROUND OF THE STUDY As the world becomes concerned with conserving electric power and the fuels that generate electricity, there is a growing need for the conscientious homeowner to keep an eye on and minimize their power usage. Vampire or standby power is loosely defined as the “electricalpowerconsumed by appliances while they are switched off (but are designed to draw some power) or in a standby mode. ...

CHAPTER ONE INTRODUCTION BACKGROUND OF THE STUDY To cleanly understand the wood information technology and communication which is the life blood of all human activities the assimilation of communication technology is of great important. The development of communication technology in any nation makers communication technology easy and pleasant. And one of basic building block of a communication system is the house bell indicating which serves as inter-call light to ensure ...

ABSTRACT The early transmitter for radio broadcasting is so big and bulky that they do occupy numerous spaces. The circuitries are mainly designed with valves, which are big in sizes. With the advent of semiconductor materials such as transistors electronic equipment are now becoming miniaturized such that small transmitters are now becoming handy and compact. In line with this we choose to design a complete radio broadcasting equipment tat is ...

ABSTRACT The basic aim of the design and construction of this three phase automatic phase selector is to demonstrate how contactors can be used to switch in between three lines or phases e.g “RED, YELLOW AND THE BLUE PHASE” without interfering with the contacts. This type of phase selector is able to switch between phases with the aid of inter-locking one phase to the other either one phase circuit is ...

ABSTRACT Despite all attempt of the federal government to have not only an uninterrupted power supply for all cities in Nigeria, but a voltage that is inconformity with the recommended 220/230v for domestic consumption for example. The NEPA Plc is facing some difficulties in generating, transmitting and distributing the required voltage stabilizer, which could be connected, to the main and then the load is in turn connected to it. This ...

ABSTRACT The machine is designed to serve with an output of 250A. it has two pats which are the primary and secondary parts. The primary part, through which voltage is supplied to the machine has 180 turns which is made of 2mm2 S.W.G 14 copper coil. The secondary part has 45 turns made of 4mm2 S.W.G 8 copper coil. Both turns are wound on separate limb of the laminated core. ...