The purpose of a power supply unit is to convert the standard Alternating Current (AC) into low-voltage Direct Current (DC) for various applications in computer products, communication products, consumer electronic products, home appliances, industrial controllers, industrial machines, wind turbine modules, solar power modules, and power conversion systems and so on. Another application of the power supply unit is switch power supply module, which is commonly used in regular computer power supply system.
UL and CE are the mandatory common certifications for most of the power supply units to ensure the functionality, stability, and the safety requirements of such products. Such high quality standard also applies to Printed Circuit Board (PCB) that is used in those power supply units. For decades, Liang Dar has been engaged in providing PCB to industry leaders in power supply business, with great experience of manufacturing PCB in this particular area.