Inside The LG Super Multi DVD ReWriter AdapterManufactured in China, this power adapter's purpose is to convert AC current to DC and provide electricity at a lower voltage than that supplied by wall outlets.
The copper windings, visible at the bottom right, serve to help convert (or reduce) electrical current.
The transformer, meanwhile, assists by transfering electricity through magnetic fields. The transformer is the component wrapped in the protective sheath (with the "APD" lettering atop).
Erik Eckel owns and operates two technology companies. As a managing partner with Louisville Geek, he works daily as an IT consultant to assist small businesses in overcoming technology challenges and maximizing IT investments. He is also president of Eckel Media Corp., a communications company specializing in public relations and technical authoring projects.