mode power supplies are widely used because of the advantages they
offer in terms of size, weight, cost, efficiency and overall
performance. As a result of their performance, switch mode power
supplies are used in all but the most exacting applications to
provide an efficient and effective source of power for most forms of
electronic systems. Switch mode power supplies have become an
accepted part of the electronics scene and are often referred to as
switch mode power converters, or just switchers. A switched-mode power supply is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently.