Ferrite Core Basics - Essential knowledge for EMC Test Engineers

I often jest that the language barrier between EMC test engineers and electronics design engineers can be summed up in one word: ferrites. Back when I was a design engineer myself, many years ago, I had absolutely no clue about what ferrites were or how to use them. Most of the time, design engineers would rely on test engineers to choose a ferrite core if their product failed EMC testing the first time. Unfortunately, in some labs, the practice of blindly selecting a random ferrite core seems all too common, largely due to a lack of basic understanding about ferrite cores. This series is dedicated to addressing these issues, and this is Episode 1 of our journey to demystify ferrite cores.