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You’ve probably noticed those strange cylinders at the end of your puter cables.
I have computer laptop which cables do not have that thingie, could one can take one from another -that is not useful anymore- and put it? propotionally as seen in the video?
Well, not all cables need one. They’re usually added for passing EMI testing (to ensure Gizmo A doesn’t interfere with Gizmo B via radio waves, more or less). Of course, it can’t really hurt anything to stick some of the snap-on ferrite cores on your cable if you’re seeing weird problems. I’ve done it before.
For example, some USB cables are very cheap for a reason, so a ferrite core might help. Other USB cables are very well designed, so the ferrite is unnecessary. It also depends on what the USB cable is connecting! Ultimately, you’d need some fancy equipment to do some testing to really know for sure if a ferrite choke would help or not.
One popular use is if you have computer speakers, and you can hear those fun “computer noises” when a cell phone is near the speakers. Many people have reported winding the audio cable from the puter to the speakers around a ferrite core, and poof! No more weird noises. Haven’t tried that one myself – yet!