An enterprise Electro C LLC develops and produces energy converters designs which are calculated at output powers from 100 W up to some hundreds kW. A main customer of Electro C LLC – RZD that sets designs into diesel locomotives, electro locomotives and coaches of passenger or freight trains. Developed devices meet modern quality standards, they might work under tough conditions of changing ambiance temperature, should meet mechanical requirements and EMI. Converters similar to them which are produced in Electro C LLC, usually are required in many areas of industry. They supply electro energy high quality various systems and complexes.