Power Supply I2V AC and DC

Description

A power supply is an electronic device that supplies electric energy to an electrical load. The primary function of a
power supply is to convert one form of electrical energy to another. As a result, power supplies are sometimes
referred to as electric power converters. Some power supplies are discrete, stand-alone devices, whereas others are
built into larger devices along with their loads. Examples of the latter include power supplies found in desktop
computers and consumer electronics devices.
Every power supply must obtain the energy it supplies to its load, as well as any energy it consumes while
performing that task, from an energy source. Depending on its design, a power supply may obtain energy from
various types of energy sources, including electrical energy transmission systems, energy storage devices such as
a batteries and fuel cells, electromechanical systems such as generators and alternators, solar power converters, or
another power supply.