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
Unemployment has been a challenge to many economies especially to those in the developing world. The main purp...
ABSTRACT
The main purpose and focus of this study was to investigate and bring to limelight the roles of insurance c...
ABSTRACT: The influence of early childhood education on scientific inquiry...
BACKGROUND OF THE STUDY
Every society across the globe has its peculiar problems and challenges. Nigeri...
Background to the Study
In recent years various women's issues have been the focus of attention and debate not only...
ABSTRACT
This study was carried out to examine the problems and prospects of teaching technical ed...
BACKGROUND OF THE STUDY
Location-based services are quickly becoming one of the most valuable capabilities available on...
ABSTRACT
Biological diversity-the variety within and among species and ecosystem is essential for our planet, human wellbeing, livelihood...
ABSTRACT
The study examined the Evaluation of Availability, Organization and Utilization of Multimedia Resources for Teaching Social Stud...
ABSTRACT
This project is on the design and development of portable and reliable fingerprint based student attendance mon...