Magnetek was formed in 1984 through the acquisition of Litton Industries' Magnetics Group.  During the 1980s, the Company acquired a number of other electrical equipment companies, and in 1991 joined forces with Plessey S.p.A., Europe 's largest independent manufacturer of electronic power supplies for computers. During the 1990s, Magnetek divested its electrical equipment operations in order to focus exclusively on digital power-electronics.

Magnetek's Headquartered in Los Angeles , Magnetek, Inc. is a New York Stock Exchange listed company (NYSE: MAG) specializing in the application of advanced power-electronic technology to meet the "uncommon power" needs of the global digital economy.

Today, Magnetek provides custom and industry-standard power components and systems for applications ranging from the Power Grid to the Internet. With annual revenues exceeding $200 million, it ranks among the world's leading manufacturers of digital power electronic power supplies, converters, inverters, rectifiers, regulators and controls. The Company also builds programmable power control systems based on these components, and is a leading provider of power conditioners for fuel cells and other alternative energy sources.

Magnetek's power products are used in data processing and data storage, telecom and datacom, medical and commercial imaging, semiconductor processing and testing, materials handling, people moving, "smart" appliances, distributed power generation and other applications requiring controllable, reliable, energy-efficient power. Magnetek operates ISO-certified research and manufacturing facilities and markets its products through leading distributors in North America, Europe and Asia .

Magnetek Power Electronics Group is a market leader in power control products including:  Ac-dc power supplies, Dc-dc converters as well as Dc-ac inverters, telecom power modules, appliance electronic controls, and power grid and monitoring systems.

Magnetek's technical staff consists of over 200 engineers at R&D centers in the US and Europe . More than eighty of these engineers have graduate degrees, and the teams have extensive experience in a broad range of power electronics technologies. Magnetek is ready to support its customers from the conception of product requirements through manufacturing to create reliable, top quality, competitive products.

Magnetek's R&D resources are dedicated to designing leading-edge products offering high efficiency and power quality. Their strength lies in mastering the key technologies at the core of power electronics: magnetics, power semiconductors, and digital controls. In-depth experience in thermal management and mechanics completes the powerful and creative design capabilities offered to their customers.

Every day Magnetek manufactures more than 500 different products, from 1W up to 15kW, from 2V up to 80kV. They have the manufacturing capacity to produce small quantities as well as high volumes (over a million).