W132 N10611 Grant Drive Germantown, WI 53022


TCI – The Leading Source for Active and Passive Harmonic Filters

TCI manufactures active (electronic) and passive (magnetic) products to resolve power quality and harmonic issues associated with industrial power conversion. TCI’s experienced staff specializes in developing optimal solutions to achieve IEEE-519 compliance and enhanced motor protection.

TCI partners with electrical and machinery OEMs worldwide, to offer both stand alone and integrated harmonics mitigation and power quality solutions. With over 50 years of experience in solving complex power quality problems, TCI has the expertise to design the right solution for you.

Trans-coil, Inc. was founded in 1961 in Milwaukee, Wisconsin. Over the past 40 plus years, we have changed our name to TCI, LLC, upgraded our manufacturing system with Quick Response Manufacturing (QRM) and added an Electronic Product Division to expand our harmonic mitigation products and solutions.

Allied Motion Technologies Inc. acquired TCI in December 2018. Allied Motion is a global company that designs, manufactures and sells precision and specialty motion control components and systems used in a broad range of industries. CLICK HERE for the full press release from Allied Motion.

Today TCI employs over 100 people and is continuously growing in sales revenue.  We aggressively pursue the development of new products enabling us to remain technically superior in the marketplace. Over the years our distributor and manufacturer’s representative network has spread across North America. Our mission remains to be the supplier of choice for products and support that increase the value and improve the overall system performance of electronic power conversion processes.