A power supply serves as an indispensable electrical apparatus, delivering electrical energy to various electrical loads. Its core purpose lies in the transformation of electric current from a source into the precise voltage, current, and frequency required to energize the load. Consequently, power supplies are often denoted as electric power converters, encompassing offerings such as the Hi-Link Power Supply Module, SMPS, and Power Adapter.

Power supplies manifest in different forms; some exist as standalone entities, while others integrate seamlessly within the electrical appliances they empower. The acronym SMPS stands for switch-mode power supply, entrusted with the task of converting standard wall-voltage AC power into lower-voltage DC power. Conversely, the Hi-Link Power Supply Module represents a compact, plastic-encased PCB-mounted isolated switching step-down power supply module.