Download Tag: DESIGN AND CONSTRUCTION

ABSTRACT It has become inevitable that there would be communication and due to the inherent limitation of the human voice, the public address system came to being. A public addressP.A SYSTEMor ”“  is   an   electronic   amplific ,amplifier and loudspeakers, used to reinforce a given sound , e.g a person making a speech, pre-recorded music ,or message and distributing the sound throughout a venue . The voice signal is passed through ...

ABSTRACT In this project, a portable cost effective AC/Solar rechargeable lantern was constructed. The dual-purpose rechargeable was designed to store energy from AC utility power source and solar power source. The electrical energy was stored in a rechargeable battery with a charge controller to regulate the charging process. The designed rechargeable lantern was automatically designed to switch off when it is being charged and automatically switch on when charging stops. ...

ABSTRACT   This uninterruptible power supplies device has the capability of converting from 12volts D.C to 220volts alternating current at the frequency of 50Hz with the help of a step-up transformer. The main importance of this device is its ability to ensure absolute continuity of power to the computerized control system thereby protecting a critical equipment from electrical supply failure. Ups system achieve this by rectifying the mains supply, using ...

ABSTRACT In this project work, we are mostly concern about building a simple power streetlight which is automatically operated. There are four main components required to build a solar operated streetlight. The solar array, High efficiency D.C lamp section made by transistor, resistors, and the sensor LDR, changes controller which is made up of diode, resistors, LED, capacitor, and a battery of which the solar array is the most expensive. ...

ABSTRACT This work deals extensively with the design and construction of an electronic dice display (EOD) with audio unit. The device displays the of a hudo dice in numberical form and also produces sound as it displays the number. The device works with principle of chance employee by ludo game players. The output of the display is usually very rapid that the player does actually sex the number when the ...

ABSTRACT Virtually in all human endeavors, there is always an element of control. Even our behavioral patterns and manner of interactions are either internally or externally guided for a meaningful life appreciation. Control then is necessary especially when something poses a danger or get to excesses. In cities today, the increase of road transportation traffic congestion at strategic junction has made it absolutely important to look beyond using traffic wardens ...

ABSTRACT This work is on design and construction of an electronic letter box with counters and indicators.This   project is developed for the users to find out whether any letter is inside the letter box and also to display the number of letters inside the letter box. An IR Transmitter and Receiver are connected at the opening of the letter box.  In normal operation, the rays transmitted from the transmitter falls on ...

ABSTRACT In recent time, there has been high level of impersonation experienced on a daily basis in both private and public sectors, the ghost worker syndrome which has become a menace across all tiers of government, employers concerns over the levels of employee absence in their workforce and the difficulty in managing student attendance during lecture periods. Fingerprints are a form of biometric identification which is unique and does not ...

ABSTRACT With the advent of technology, most tasks undertaken by man have now been overtaken by semi-conductor devices applicable in the areas of communication industry. In industrial, commercial and recreational establishment, there is always the need to reach the public. The faster this is done, the better. In this project: design and construction of an Electronic Bill Board (EBB), which is a display device that converts electrical signals transmitted from ...

ABSTRACT This project work deals on the design and implemental of a headlamp operated gate opening system capable of operating a gate/door using the particular headlamp only. This system tends to climate the thresh associated with manual, opening and closing of gates and boosts the security of the entity this electric system is realized in two functional units the transmitter and the receiver. The transmitter is realized using a timed ...

ABSTRACT In recent time, there has been high level of impersonation experienced on a daily basis in both private and public sectors, the ghost worker syndrome which has become a menace across all tiers of government, employers concerns over the levels of employee absence in their workforce and the difficulty in managing student attendance during lecture periods. Fingerprints are a form of biometric identification which is unique and does not ...

ABSTRACT This project report is a thesis written specifically to cover the design analysis construction, test and packaging of a multipurpose security system from electric component that can be easily be obtainable from the market. The report discusses the various unit and stages of the alarm system, thesis include:- a)     Clock generation and frequency division unit. b)    The control and section unit, comprising of a one shot 555 timer multiplexer, sound amplifier ...

ABSTRACT In recent time, there has been high level of impersonation experienced on a daily basis in both private and public sectors, the ghost worker syndrome which has become a menace across all tiers of government, employers concerns over the levels of employee absence in their workforce and the difficulty in managing student attendance during lecture periods. Fingerprints are a form of biometric identification which is unique and does not ...

ABSTRACT With the advent of technology, most tasks undertaken by man have now been overtaken by semi-conductor devices applicable in the areas of communication industry.In industrial, commercial and recreational establishment, there is always the need to reach the public. The faster this is done, the better.In this project: design and construction of an Electronic Bill Board (EBB), which is a display device that converts electrical signals transmitted from electronic devices ...

ABSTRACT This work deals extensively with the design and construction of an electronic dice display (EOD) with audio unit.  The device displays the of a hudo dice in numberical form and also produces sound as it displays the number. The device works with principle of chance employee by ludo game players.  The output of the display is usually very rapid that the player does actually sex the number when the ...

ABSTRACT   In this project work, we are mostly concern about building a simple power streetlight which is automatically operated. There are four main components required to build a solar operated streetlight. The solar array, High efficiency D.C lamp section made by transistor, resistors, and the sensor LDR, changes controller which is made up of diode, resistors, LED, capacitor, and a battery of which the solar array is the most ...

ABSTRACT This project work deals on the design and construction of an Rf based remote control for an electronic/electrical device say electric lamp with the aim of switching on/off of the lamp at discretion and from a distance. It also eliminates the inconveniences associated with manual switching of lamps.  This electronic system is designed in two functional units; the transmitter and the receiver using radio frequency (RF) communication wave band.  The transmitter ...

CHAPTER ONE INTRODUCTION 1.1                             OBJECTIVE OF PROJECT The need for a remote control alert system that can control domestic appliances and various lighting points and sockets has often been a concern for users. At times users find it inconvenient and time consuming to go around turning their appliances on or off each time there is power outage or each time they are leaving the house for work. It has also often ...

Abstract  The aim of this project work is to design and construct an electronic digital display system, based on light-emitting diodes connected in an array that forms the information to be displayed i.e. “GREAT NIGERIAN STUDENTS”. This project is useful for creating attention – getting messages, presentations, advertisements and location identifiers. The system consists of power supply unit, oscillator unit, counter unit, driver unit and output unit. The power supply ...