ABSTRACT
A UPS system is a DC to AC conversion system of 1KVA power rating and expected to carry around 800 watts load. It provides power to electronic and electrical appliances such as radio sets, TV DVD/VCD, computers, fans and lighting. The design was conceived and put down as block diagram. Corresponding circuit diagrams for each black box were sourced and drawn. The component values according to desired specifications were designed from the first principle and needed values derived. The transformer was also designed and with measurements and component values we went to the market. Most of the transistors were not in the market and order was made with the trader and they were later collected. These components were first wired on project board, tested before being removed and transferred to veroboard where they were soldered permanently and tested. The tests carried out were successfully including the capacity of the transformer and the transformer stability and hum-free operation. The circuit veroboard and transformer along with meters, switches, indicators and output sucket were all carefully packaged inside the system box and test carried out again. This financial test was also successful.
Abstract
This project examines the comparative study of the performances of government owned and privately owned broadcasting media organ...
CHAPTER ONE
INTRODUCTION
Background of the study
Institutio...
ABSTRACT
This study investigated the effects of positive reinforcementand social skills training counselling techniques on sullenness amo...
Statement of the Research Problem
Despite serious concerns regarding retirement and its consequences on workers overall wellness, there h...
ABSTRACT
This study was carried out to assess the Principals‟ Role on Students‟ Service Delivery in Secondary Schools in Abuja Municipal...
ABSTRACT
This study looks at legal and institutional framework for Islamic banking in Nigeria with a view to identifying the challenges i...
ABSTRACT
The main focus of this study was to find out the attitude of in-school adolescents in Eket Local Government Are...
Abstract
This research work examined the impact of radio on voters mobilization with Enugu North municipality as a case study. The survey...
INTRODUCTION
In Nigeria society the child is highly cherished not only by the parents but also by the f...
ABSTRACT
Information communication technology has brought numerous innovative success in the constructi...