Power Supply

A power supply is a device or system that provides electrical energy to a load or output circuit. Its main function is to convert one form of electrical energy into another, usually from alternating current (AC) to direct current (DC) or to regulate and control the voltage and current supplied to electronic devices.

Types of Power Supply:

AC

Converts alternating current (AC) from a source such as a mains power socket into a stable AC voltage suitable for operating equipment and devices that require AC input.

DC

Converts AC from a mains or other source into a steady and regular direct voltage (DC). It is commonly used to power electronic devices that require a specific DC voltage.

Linear

Uses transformers, rectifiers, and regulators to convert AC to DC. It provides a stable output but is less efficient and bulkier compared to a switching power supply’s.

Switching (SMPS – Switched-Mode Power Supply):

Uses switching devices (such as transistors) with high frequency to convert AC to DC. More efficient, smaller, and lighter, suitable for most modern electronic devices.