Member of the Altes holding company, SEF Power is an SME specializing in the design and manufacturing of power supplies and power converters for the railway, defense and aeronautics sectors. CNB Electronique and SDS High Voltage are also members of Altes and also offer low and high voltage DC/DC converters. Our global service offers you a range of standard converters or a design based on specifications. Product range: - AC/DC - 10 to 2000 W - DC/DC - 10 to 2000 W - High voltage DC/DC - up to 50kV - UPS - DC/AC Services: - Engineering in Power Electronics, Energy Conversion, Digital Control - Subcontracting in electronic cabling and integration of mechanical systems - Subcontracting and manufacturing of electronic cards and systems SEF Power is ISO9001 and EN9001 certified. All teams are located in a modern building close to Paris, France