All the components of your devices have some purpose or the other. Sometimes you know it, though at times, you are not aware of the purpose. Hence, no matter how weird a part appears, there is always ...

Simple, two-terminal SMT (surface-mount-technology)-ferrite-bead components perform crucial functions in many systems. For example, one might suppress electromagnetic emissions from a power wire.

If you ever see a small black cylindrical thing that looks like a lump sticking to the cable of your phone or laptop charger and wonder what it is for, then know that most people simply ignore it or ...