I. Objective of the design

II. Introduction of the design
A power supply is a device that supplies electrical energy to one or more electric loads. The term is most commonly applied to devices that convert one form of electrical energy to another. A regulated power supply is one that controls the output voltage or current to a specific value, the controlled value is held nearly constant despite variations in either load current or the voltage supplied by the power supply's energy source. Variable power supplies are common laboratory and service shop test equipment, allowing the output voltage to be adjusted over a range.

Generally, a power outage can be identified as a power cut, power failure or blackout. This can be addressed as loss of electricity power to a specific area. Nevertheless, there are different causes of power failure in electricity which can easily cause damages to human and business operations. It is fairly settled in the literature that infrastructure plays a critical and positive role in economic development. Infrastructure interacts with the economy through multiple and complex processes. It represents an intermediate input to production, and thus changes in infrastructure quality and quantity affect the profitability of production, and invariably the levels of income, output and employment. Moreover, infrastructure services raise the productivity of other factors of production.
Currently in Nigeria, lack of electricity supply is one of major infrastructure problem affecting the business sector. The typical Nigerian firm experiences power failure or voltage fluctuations about seven times per week, each lasting for about two hours, without the benefit of prior warning which may likely cause damages such as spoiled materials, lost output, damaged electronic electronic equipment, restarting cost operations and distraction of business