ABSTRACT
This project presents the design and construction of a battery charger. A battery charger is an electrical/electronic device used to put energy into a secondary cell or rechargeable battery by forcing an electric current through it. The system consists of a step down transformer, an AC to DC converter and a DC voltage regulator. The circuits are designed using copper wire, rectifier diodes, electrolytic capacitors, resistors with other passive and active component of electronics. A battery charger is an indispensible device for battery users because battery is an essential element that powers any electronic products like UPS inverters system, photographic equipments, hand-held lamps (flashlight or torch), computer-memory standby, toys, novelties and automobiles, etc. These products will become useless if there is no charger to refill their battery when it runs down. In this project, a sophisticated class of battery charger is designed not just to refill rechargeable batteries but to conserve the battery life because wrong handling and charging of a battery can permanently damage the battery even if is brand new. With this project, people can recharge both alkaline, NiCad and lead acid batteries by themselves and then save money on battery purchases
ABSTRACT
This study was carried out to evaluate the concentrations of heavy metals and other contaminants in the effluents from some food...
ABSTRACT
In most communities, the first level of healthcare visit is usually the community pharmacies h...
ABSTRACT
This study investigated the physical, mineralogical and geochemical properties of Kutigi clay deposit in the central Bida Basin...
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The study seeks to investigate the influence of mobile phone usage on conventional tools by un...
STATEMENT OF THE PROBLEM
The master key to the success of any institution (financial and non – fi...
ABSTRACT
The purpose of this study, titled “the problems affecting the teaching of poetry in Junior Secondary Scho...
Abstract
In this research work, the researcher intended to have a general discussion with local government as my backgro...
Abstract
Macroinvertebrates organisms form significant part of an aquatic ecosystem which are of ecological and economic importance becau...
ABSTRACT
Plantains (Musa epp) are important staple foods, which make substantial contribution of the nutrition and econo...
Abstract
The study examined the impact of government expenditure on economic growth in Nigeria, using the time frame 2000-2015 (5years).<...