You plug it in, your laptop charges, and that's usually the end of the story. Still, a lot of people eventually notice the same detail: a chunky cylinder sitting somewhere along the charging cable, ...

The small black cylinder near the end of many power and data cables is not a decorative lump of plastic, it is a deliberate piece of engineering that keeps your gadgets talking clearly in a noisy ...

One of the best tools in the engineer’s lightning protection toolbox is a tried, true and frequently underutilized friend, the ferrite toroid. The principle is quite simple. If you have two (or more) ...