A power supply is an electrical device that supplies electric power to an electrical load. The primary function of a power supply is to convert electric current from a source to the correct voltage, current, and frequency to power the load. As a result, power supplies are sometimes referred to as electric power converters.

The Hi-Link Power Supply Module is a plastic enclosed PCB mounted isolated switching power supply module. It is widely used in a smart home, automation and control, communication equipment, instrumentation, and other industries.