A power supply is a device that provides power to electronic devices, also known as a power supply. 

It provides the electrical energy required by all components in a computer. The size of the power supply,

 whether the current and voltage are stable, will directly affect the working performance and service life

 of the computer.

A power supply is a device that converts other forms of energy into electrical energy and provides electrical 

energy to a circuit (electronic device).

The power source is based on the principle of "magneto generated electricity", which is generated by renewable

 energy sources such as water power, wind power, ocean tides, dam water pressure difference, solar energy, and

 burning coal, oil residue, etc.

Common power sources are dry batteries (DC) and household 110V-220V AC power sources.