Power supply
A power supply is a component that supplies power to at least one electric load. Typically, it converts one type of electrical power to another, but it may also convert a different form of energy – such as solar, mechanical, or chemical - into electrical energy [Techopedia].
A power supply provides components with electric power. The term usually pertains to devices integrated within the component being powered. For example, computer power supplies convert AC current to DC current and are generally located at the rear of the computer case, along with at least one fan.
A power supply is also known as a power supply unit, power brick, or power adapter. Power supply - a device providing power to electronic equipment and sometimes designated A, B, or C according to its function of heating vacuum tube cathodes, causing a flow of electron current in plate circuits, or applying a direct voltage in grid circuits [Merriam-Webster dictionary].
Power supply. Techopedia. Retrieved from: https://www.techopedia.com/definition/1756/power-supply
Power supply. Merriam-Webster dictionary. Retrieved from: https://www.merriam-webster.com/dictionary/power%20supply