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MTE Corporation was formed in 1982 for the purpose of acquiring four, independent, magnetic and electronic companies, located in the Milwaukee, Wisconsin area. In 1983 the acquisition was completed which brought together the companies known as Milwaukee Transformer Co., Transformer Design Inc., Hytran Inc., and Milwaukee Electronics Corporation. Each of these companies specialized in a different field of magnetics and transformer design and were long established companies in their respective fields. The clear objective of this acquisition was to build the best magnetics company in the country by capitalizing on the individual strengths of each of the companies, while bringing to each a new dimension in management, marketing and quality under the new MTE Corporation.


By 1988, Milwaukee Electronics was sold and the remaining companies merged into MTE Corporation operating divisions, maintaining the same specialization they had as independent companies. Milwaukee Transformer and Transformer Design, subsequently the Industrial Products Division, produces a full range of dry type transformers, reactors, chokes, etc. for the commercial and industrial marketplace. A wide spectrum of products are manufactured using laminated core, C-core and amorphous metal core technologies. Fabrication techniques include open frame, and encapsulated units. Encapsulated units typically include potting in molded epoxy, plastic or metal enclosures. This division also produces custom ballasts used in Municipal Street lighting systems which employ high-pressure sodium vapor lighting.


A new division was formed in 1990 called the Power Quality Division. This division produces various Power Quality devices; in particular 3-phase Line/Load Reactors sold under the copyrighted name "Guard-AC". AC Reactors have widespread applications in power quality and energy conservation. Reactors are widely used in conjunction with variable speed drives and other electronic equipment to protect the equipment from unwanted power surges and to help bring harmonics into compliance with IEEE, IEC and U.S. utility standards for harmonics distortion and power factor. Today, this division offers a complete range of electrical power quality solutions.