Power Supply

By Megan Jones

What is a power supply?

A power supply is an electronic device that supplies energy to an electric load. The primary function of a power supply is to convert one form of electricity energy to another end and, as a result, power supplies are sometimes referred to as electric power converts.

The Basics

There are two basic forms of power supplies used in electronics equipment.

Unregulated and Voltage regulated.


An unregulated power supply is the easiest 'switch mode power supply' (SMPS). This is used in mobile power.


A regulated power is a circuit. Its function is to supply a stable voltage (or less often current) to a circuit or a device that must be operated within certain power supply limits.

Big image

This is the power supply with all its different parts labled

Choosing the Right PC Power Supply (PSU) as Fast As Possible