Wednesday, 27 February 2019

Capacitor on USB cable?


I was messing around with a USB camera. I wanted to change the cable because is trimmed but as I was cutting it I saw a small thing (image below). As I was trying to cut the casing and see what it has inside I saw a spark. I tried to connect it with another cable but I don't know if I'm gonna damage the camera or the USB port.


enter image description here


What is it and can I connect the camera without it?




Answer



I guess you're talking about the ferrite bead:


enter image description here


Source: Wikipedia - Ferrite bead


Its purpose is to prevent interference at high frequencies signals.


It may also work without it and with a cable as short as possible.


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