ABSTRACT A swimming pool is a large room constructed where people eat meals and share ideas outside the meals time. The project focuses on the construction of a modern swimming pool that serves all the heart of our institution providing a space for social interaction. The swimming pool is more than just a place to eat; it is an important place where students and staff come together to share meals, ideas and experience. The proposed swimming pool will be designed to accommodate dietary need for people. It will feature sitting areas flexible dining spaces for events. The swimming pool will have different offices in it. It will have some rooms which will have catering places so as to enable the people with physical disabilities to access food and all members of the college community. It will be a place where the entire college will come to eat together showing togetherness. The construction of this swimming pool is an investment is overall well- being of college community. It promotes a sense of belonging. The researcher recommends that a construction of a modern swimming pool to solve the problems.

BSTRACT The scope of this project is to design, develop and test a power supply capable of taking an ac voltage and convert it into a regulated low voltage. The main working of this project is a full wave rectification which is done by bridge configuration in which four diodes are used to rectify the output the step-down transformer which steps down the voltage from 240v to 12 V.A Voltage Regulator is then used which gives a constant voltage. The main task is to get variable output by using the pair of voltage divider resistance to increase the output of the regulator in which the resistance is variable. So when increasing or decreasing the resistance of the resistor, also the voltage varies from 1Vto 12 V.The circuit also uses capacitors C1 and C2 to get constant input voltage to the regulator and also is used tosmoothen the rectified voltage to output.The power supply will be connected to the Zener voltage regulator that could supply to the load.

ABSTRACT The essential use of 12V lead acid batteries in automobile engines to power incorporated electrical appliances, and also the sudden failure of vehicle charging systems that often give rise to a drain of battery cells has necessitated the construction of battery chargers suitable for fully restoring the lost charge into the required 12V battery cells. Most 12V battery charging devices built for commercial services are usually heavy and bulky and lack a protection circuit and a sensitized control circuit required for automatic deactivation of charging once the battery is fully charged. In this new design product, the size of the battery charger was made portable and light in weight to enable end users to convey it as easily as possible. Short circuits and current reverse protection were incorporated as well. A sensitized control circuit was implemented to ensure that charging is terminated immediately when the battery is fully charged. This is to avoid the possible occurrence of overcharging that may result in loss of electrolytes. In this report the components used to actualize the design work were listed and the design specifications were tabulated with the circuit diagram well detailed. The operational principle of the built charger clearly explains how the design objectives were reached. An adopted formula with example on how to calculate the charging time of a battery when using the product was derived. Design limitations, recommendations, and conclusion were stated. Various relevant tests were conducted with its corresponding results tabulated. Finally, a well labeled image which lays out views of the completely constructed battery charger is attached in order to appreciate the effort and the value of the design work. (Keywords: AC power supply, rectification, charging, deactivation, full charge) Considering, the compact shape of the battery charger, with very low ventilation an extractor fan was incorporated to drive away hot air and moisture that would be generated inside the charger compartment during operation.

ABSTRACT An A.C and D.C fluorescent tube is useful for emergency blackout as it works on D.C as well, this saves the production process under lightings. This project comprises A.C components as well as D.C components under improved conditions, this makes it useful in both urban and rural areas. When A.C power is off user can supply it with D.C power to light the house or place as well Although fluorescent lamp is a very efficient lighting device in daily life, still the high harmonic distortion and low power factor cause unnecessary energy consumption. In today’s environment demanding energy efficiency, it is important to reduce this energy loss by integrating an energy saving controller in the electromagnetic ballast of fluorescent lamps. The research presented in this thesis investigates the design and implementation of a new energy saving controller for electromagnetic fluorescent lamp network. The newly developed controller attempts to reduce power losses in both the electromagnetic ballasts and fluorescent lamps by regulating the incoming supply voltage to an optimum level. In addition, the new controller is able to adjust the illuminance level of working environment lightings under either dark or bright condition. Moreover, the function of the new controller is extended with time scheduling control capability, where the switching of lighting systems can be controlled at predetermined times based on occupancy schedule. Both simulation and practical results show that the implemented controller reduces energy consumption by at least 37.5%, by reducing the incoming supply voltage by 15%. In addition, it is desirable to have variable illuminance level control to decrease the energy losses. The experimental results show that the illuminance output level of electromagnetic ballast fluorescent lamps can be decreased by 50% using the new controller while maintaining unity power factor. Integration of the new energy saving controller into electromagnetic ballast fluorescent lamps impressively outperforms the existing electronic dimmable ballast. This new controller brings great ideas for energy saving in the use of fluorescent lamps. Keyword: energy saving, illuminance level control, voltage control, electromagnetic ballast fluorescent lamps

CABLE FAULT DISTANCE LOCATOR.pdf

ABSTRACT Conductor failure or outage in general does not promote development to public and private sectors. Development of our country and in addition, there are processes that need not to be interrupted because of their importance. This project presents the design, construction and implementation of a broken ac conductor for automatic detection of a broken ac conductor. Studies have shown that the electric fault which occurs in this facilities constitute the major cause of service interruptions as a result of their exposure to high currents, mechanical strains, utilization by the high currents consuming appliances used for a long time thus it’s difficult to locate the accurate location of the broken conductor. and because now days’ electric cables are being installed inside the walls using the pvc conduits or are being installed underground by the use of underground cables and because of this people generally replace the broken conductors instead of repairing them due to hardship in locating the exact place where the cable is broken therefore the reason of coming up with this project was to facilitate quick locating and isolation.

Technology development has made automation process simpler. The rise in population in the country increases demand for electrical knowledge, Security personnel and more application of electricity in their lives for better improvement and efficient services in homes and the country at large. The need of security is essential to human and living creatures. Considering the need of security we realized that the level of crimes such as theft is increasing, which causes poverty to low class people and class beings. Security is a vital tool in life as it helps people comfortably do business, live well hence encouraging investment the act of employing people to keep monitoring the area is expensive, Therefore a unit need to be designed to solve this problem. In considering the need of many I care up with infrared Based Security Alarm system which alerts one when the intruder interference with IR. i.e. when someone enters in a given area it turns on the security lamps and hence the Buzzer/ac alarm using Relay can produce sound hence detection at the intruder. Infrared based security alarm circuit an detect any movement trigger the alarm. THIS circuit is very useful in homes, banks, shops restricted areas where an alert alarm is needed on any movement. This circuit is based on IR sensor where an infrared beam is continuously falling on a photodiode and whenever this infrared beam breaks by any kind of movement alarm is triggered. Infrared sensor consist an infrared LED and photodiode in which IR LED emits infrared radiation and photodiode detects the radiation photodiode conducts current in reverse direction whenever light falls on it and voltages across it changes this voltages charge is sensed by voltages comparator i.e.(LM358) and generates output accordingly. In this infrared based security alarm circuit we have placed infrared LED in front of photodiode so that IR light can directly falls in photodiode. Whenever someone moves through this beam IR rays stop falling on photodiode and Buzzer start beeping . Buzzer automatically stops after sometimes as buzzer is connected to 55 timer in mono stable mode. OBJECTIVE Main objectives To design infrared based security alarm.

ABSTRACT Automatic washroom light switch as the name suggests is a control device used in homes and can also be applicable in industries. A different component with different characteristics are incorporated together to come up with a circuit forming a control device. Major components used in this project are: Reed switch, Op-AMP 741, IC 4017, decade counter, General purpose relay, resistors and light emitting diode. This project is aimed at solving the problem carelessness of switching or turning off manual switches which for many cases results to a high electrical bills (consumption cost). It is simple to operate since it operates automatically. Micro controller in this project is IC 4017 while the OP – AMP 741 is a comparator.

INTRODUCTION Emergency light is an integral part of household electronics nowadays. We all Emergency light is used during the power failure to light up the home. As it is used during the power failure, it should last long, hence generally bright white LEDs are used in emergency light, because they produce more light and consume less power. Emergency light is very useful and popular project in DIY section. So today we are going to build a simple and cost effective emergency light. In this emergency light circuit, when the Power goes OFF, the emergency light activates automatically. We have used four bright white LEDs; more LEDs can be added to produce more light considering that total current consumption should not exceed the supply current. Ultra bright white LED consumes 3v and 20mA current. 1.2 OBJECTIVES -To design a project that can be used an alternative source of light in case of power failure occasioned by changes in climatic conditions. -To design a project that is cost effective. 1:3 SPECIFICATION -Input voltage (220-240) V arc -Frequency 50Hz a.c -Battery output voltage 6v d.c -Output current 4.5Ah 1:4 PROBLEM STATEMENT - In boarding school at night and dawn studies, students do have problems when their is power failure ,so I come up with this project that will help provide light to them during their studies incase of power failure.. - Lastly it helps to reduce the cost of power consumption, hence it's economical alternative source of power,, as compared to generator.

ABSTRACT This research focuses on detection of an authorized access to residential and commercial buildings when residents are away fromthe access gate of thehouse .The system is simple reliable and touch less activator security system and uses sensor technology to revolutionized the standard of living .The system provides the best resolution to most of the problems forced by house owners in their daily life. Due to its simple electronic component nature, it is more adaptable and cost effective .the system is divided into three units which employs both the use of the dc battery and the mains supply to ensure constant power supply to the circuit. The design of the system was achieved by considering some factors such as economy, availability of the components and research materials, efficiency, compatability and portability and also durability in the design process. The system works on the principal of thetouch lesssensor. The general performance of the system depends on the presence of intruder enterrring through the door .the overall system was constructed and tested and wok perfectly. The IR theft alarm consists of infrared IR Transmitter, IR receiver and comparator IC LM358. This detector circuit can be used to detect any human entry, obstacles, theft, etc, in order to use IR detector circuit to sense human entry, the IR sensor has to be placed opposite to each other .IR rays is directly falls on IR receiver which in turn is given as input to the ic LM358 which is used as a comparator. Comparator is a circuit which compares two voltages. (Reference voltage and input voltage) produced output according to the input. The output of the comparator is given to the transistor which acts as an inverter and drives a LED and a Buzzer. Buzzer will give you sound if LED is turned ON.