What is a Power Supply Unit (PSU)?

A Power Supply Unit (PSU) is a device that provides power to a system or device. The power supply unit typically converts AC (alternating current) to DC (direct current) and delivers the required voltage and current for the operation of the device. This enables electronic equipment such as computers, servers, home appliances, and communication devices to receive stable power. Power supply units are designed with efficiency, reliability, and safety in mind. They often come with protection features like overvoltage, overcurrent, and short-circuit protection to safeguard the device. Additionally, they are designed to provide various outputs (voltage and current) depending on the needs of the equipment.

For example, a computer power supply unit usually takes an input of AC100V–240V and provides multiple outputs, such as 12V, 5V, and 3.3V. Efficient design is crucial, as minimizing energy consumption is an important consideration.

※Includes information on some trading companies