Schaffner - energy efficiency and reliability. Schaffner is the international leader in the fields of electromagnetic compatibility (EMC) and power quality offering solutions like EMC filters, EMI filters, EMC components, EMI filtering, harmonic filters, passive harmonic filters, active harmonic filter, AHF, AC filters, DC filters, electromagnetic compatibility, EMC, IEC inlet filters, power entry modules, noise filters, EMI chokes, power quality, transformers, output reactors, line reactors, output filters, power line filters, feedthroughs, single-phase filters, three-phase filters for industrial applications such as energy-efficient drive systems and electronic motor controls, renewable energy, machine tools and robotics, electronic devices and power supplies, telecom, public transport and for automotive.