EMC Filters Damp Differential and Common-Mode Noise at Same Time

Jan. 6, 2020

The All Mode filter is created from a magnetostriction-free material, making them noiseless as well as lighter than comparable solutions.

Cabe Atwell

SMP Sintermetalle Prometheus has created a new “All Mode” EMC filter featuring high-frequency stability. The filters work to reduce interference currents and voltage spikes in power-converter systems by simultaneously damping differential and common-mode noise. To accomplish this, special materials are used to create a stable inductance over a large range of the frequency spectrum.

Unlike the common ferrite, steel sheets, and nancrystalline ribbon material more commonly found in EMC filters, the All-Mode filter is created from a magnetostriction-free material, allowing them to be noiseless and 40% lighter than standard solutions. The family of products is capable of supporting currents into the thousands of amps and frequencies into the gigahertz range.

SMP Sintermetalle Prometheus GmbH & Co., Ottostraße 4, 76676 Graben-Neudorf, Germany; phone: +49 7255 7160; www.smp.de

About the Author

Cabe Atwell

Engineer, Machinist, Maker, Writer. A graduate Electrical Engineer actively plying his expertise in the industry and at his company, Gunhead. When not designing/building, he creates a steady torrent of projects and content in the media world. Many of his projects and articles are online at element14 & SolidSmack, industry-focused work at EETimes & EDN, and offbeat articles at Make Magazine. Currently, you can find him hosting webinars and contributing to Penton’s Electronic Design and Machine Design.