TECH FOCUS

摘要

Electromagnetic interference (EMI) is a notorious enemy of electronic device design, defined as the electrical or magnetic interference that degrades or damages the integrity of a signal or the components and functionality of electronic equipment. Suppressing EMI is key in electronics design, as many products are built with an EMI filter or other component that combats such interference. Here are some new innovations in this space.SCHURTER has extended its family of EMI filters for 1-phase systems with its new FMAB HV series. The new filter is suitable for applications requiring AC voltages up to 277 V, such as 1-phase of the 3-phase 480/277 VAC wye system, typically used for lighting applications in North America. It is also rated for 400 VDC. Due to its high symmetrical attenuation, the filter series is particularly suited for devices using semiconductors, which regulate high outputs. Furthermore, the compact, fully enclosed housing provides optimized shielding through a very stable, flush mounting. The FMAB HV offers a current range from 1 A to 20 A at 277 VAC / 277 VDC according to IEC standard, and 277 VAC and 400 VDC according to UL/CSA standard. It has ENEC and cURus approval. Temperature range is from -40 °C to 100 °C.