Engineering

Research Papers/Topics in Engineering

CONSTRUCTION OF 500W12VINVERTER CHARGER

ABSTRACT An inverter is a system which is capable of converting DC voltage from a battery into AC voltage. The Inverter constructed converts 12V dc to 220V Ac. It consists of an oscillator section using 8V dc to produce 50Hz sine wave. The sine wave is amplified by Tip 41 and used to drive IRPF 250 MOSFET power transistors capable of delivering 500W norminally.The mosfet switches the 12V dc across the high current transformer which then produces the Ac at its output. The output of the tr...

CONSTRUCTION OF A MICROCONTROLLER BASED SECURITY DOOR USING SMART CARD

ABSTRACTThis project shows the construction of a microcontroller based security door using smart card. It is aimed towards programming the microcontroller to control the hardware in sliding door. The system consists of a microcontroller 89S52 which sends a signal to the multiplexers on insertion of the smart card in the card slot. The multiplexers consist of ICS which prompts for a display of the identity of the card user in the liquid crystal display (LCD). The LCD displays the status of the...

CONSTRUCTION OF A MICROCONTROLLER BASED GATE

ABSTRACTMicrocontroller based automate controller is a project design of a system that is used in operating a gate automatically. The system opens the gate automatically when a human being or car is about to enter a compound or exit a compound. The system works by sensing the light rays from the head lamp of the vehicle. The light ray is sensed and signal is used in operating the gate. Different blocks of circuit are put together to ensure that the system works perfectly as desired. The block...

CONSTRUCTION OF STEEL CUPBOARD

ABSTRACT A workshop cupboard is a facility designed from mild steel for the storage of various materials, like book material and non-book materials e.g. workshop tools, labouratory wares and reagents, etc; after operations in a chemical labouratory, mechanical workshop, or else where. The construction of a workshop cupboard requires the consideration of lots of characteristics of the materials, which are used for the construction, such as physical and mechanical; chemical properties, servic...

CONSTRUCTION OF METAL DETECTOR

ABSTRACTMetal detectors are electronics sensors that indicate the presence of metallic object without making physical contact with object. They are effective and useful security tools employed in strategic places such as airport, bank, stadiums, government houses and also in production industries to detect presence of metallic object on person luaggages, consignments foods, drugs garments etc. The study present a metal detector comprising a radio frequency oscillator, demodulating unit, trigg...

CONSTRUCTION OF A GSM BASED HOME AUTOMATION USING AVR

ABSTRACTWith advancement of technology things are becoming simpler and easier for us. Automatic systems are being preferred over manual system. The purpose of this project is to design and construct A GSM based home automation using AVR. Using GSM networks, in this project a home power control system has been proposed that will act as an embedded system which can monitor and control appliances and other devices locally using built-in input and output peripherals. The system has a delay of 2 m...

CONSTRUCTION OF A MICROCONTROLLER BASED T-JUNCTION TRAFFIC LIGHT CONTROLLER

ABSTRACTT-junction traffic light controller is such a device that will play a significant role in controlling traffic at junctions, to ease the expected increased rush at such junctions and reduce to minimum disorderliness that may arise, as well as allowing the pedestrians a right of the way at intervals rather than being struck down when in a hurry to cross the roads. Such an electrical system with a touch of electronics that control the flow of traffic in a pre-determined sequential patter...

CONSTRUCTION OF AUTOMATIC WATER LEVEL CONTROLLER FOR BOTH OVERHEAD AND UNDERGROUND TANKS

ABSTRACTAutomatic water level controller for both overhead and underground tank is designed to monitor the level of water in a tank. It displays the level of water and when it is at the lowest level; a pump is activated automatically to refill the tank. When the tank is filled to its maximum capacity, the pump is automatically de-energized. Several circuits are put together to ensure proper working of this design, and the block diagram includes the supply unit, the micro-processor unit, the s...

CONSTRUCTION OF RADIO FREQUENCY GSM SIGNAL JAMMER

Abstract A wireless signal jammer is a device which blocks transmission by creating interference. This wireless signal jammer can be categorized into the Radio Frequency (RF) jammer and GSM jammer.A Radio Frequency jammer is a device used to disrupt or prevent communication via a broadcasted RF signal. It is an RF and GSM frequency disrupter commonly known as wideband radio frequency (RF) and GSM cell phone jammer. Simultaneously, they can blocks all commercial FM broadcast band (87.5 MHz to ...

DESIGN AND CONSTRUCTION OF VOLTAGE INVERTER SYSTEM WITH TRICKLE CHARGING SYSTEM

ABSTRACT This project is he design and construction of a voltage inverter system with trickle charging system. This device is design to provide power supply for the need of offices, household etc. In absence of NEPA power supply. It would also prevent harm to our appliances caused by power holding company LTD (NEPA) Random power outage .TABLE OF CONTENTTitle PageApproval PageDedicationAcknowledgmentAbstractTable of ContentsCHAPTER ONEIntroductionMost Essential Circuit in the DeviceTransfor...

DESIGN AND CONSTRUCTION OF A 60AMP THREE PHASE AUTOMATIC CHANGE OVER SWITCH.

ABSTRACTThe design and construction of a 60A, 3-Ф automatic power changeover from public utility supply to generator and vice versa was aimed at providing a useful system for use in our homes or offices. The system was achieved with a 66A 3-Ф contactor, 100mA transformers and relays. The system turns on a generator when the public utility (PHCN) is off by cranking the starter and a provision was made to stop cranking when the generator is fully started. A delay was provided to stop the gene...

REPAIR AND REHABILITATION OF A WINDOW UNIT AIRCONDITIONER

ABSTRACT The project work Rehabilitation and Repair of A Window Unit Air Conditioner exposes us to the internal working mechanism of the window unit a.c.  The working principles component unit, faults and effective repairs carried out to ensure the serviceability of the broken down unit. It buttress the need for routine maintenance, and effective repair works to be carried out on the a.c unit as well as other electrical gadget to ensure long service life and efficiency of the require...

DESIGN AND INSTALLATION OF 200 WATT SOLAR POWER SYSTEM

ABSTRACTThe 200W solar system was determined by load assessment, solar panel number determination, battery requirement and then inverter sizing. A complete solar panel rated at 200w was however purchased, together with 2 no. 150A solar battery, 1500W inverter and also 10A charge controller. These were assembled together with necessary protective gadgets like cut out switches; to give the 200W expected. The solar panel was mounted outside the building to allow for maximum collection of sun ene...

DESIGN AND CONSTRUCTION OF 20WATTS WIRELESS PUBLIC ADDRESS SYSTEM

ABSTRACTIt 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 address or “P.A SYSTEM” is an electronic amplification system with a mixer ,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 a microphone , which converts the sound...

DESIGN AND FABRICATION OF WHEEL AND BRAKE SYSTEM OF A TIPPING TRUCK

ABSTRACTThe purpose of this research work is to design, fabricate and install a hydraulic brake system on a wheel system of an agricultural tipping truck. For an efficient functioning of the brake system some measures have to be strictly considered; the weight of the vehicle and the external load.The engineering materials used in the fabrication of the wheels system include metals, ceramics and polymerics.Despite the efficiency of the brake there must be routine checks and maintenance to ensu...


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