Pioneer Magnetics is dedicated to providing high-quality value-added AC-DC, DC-DC, rectifier and inverter switched-mode power supplies, power systems and engineering support to OEM companies as well as to the end user. AC-DC, DC-DC, rectifier and inverter switching power supplies designed and manufactured by Pioneer Magnetics are found in every country of the world. For over 50 years, PMI has continued to set the standard and remains the industrys leading supplier of high-power AC-DC, DC-DC, rectifier and inverter switching power supplies. In addition, our ability to create industry standard configurations as well as custom power solutions provides cost-effective solutions for thousands of applications. PMIs hallmark is its superior technology and system design experience Pioneer Magnetics AC-DC technology is widely respected throughout the industry. PMI's R & D group has developed and patented over 60 innovations relating to switching power supplies and test equipment. PMI is known for its industry-leading technologies. One such cutting-edge design is power factor correction (Pfc) ( U.S. patent # 4,677,366) . This product was licensed to major semiconductor manufacturing companies worldwide and incorporated into a myriad of applications used throughout the power supply manufacturing industry.