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What is the bigger cylindrical part found at the end of USB cables but also some laptop PSU cables?

Fresh6 days ago
Mar 15, 20268744 views
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Possible Duplicate: What is that cylinder on cables? What's this part?

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Fix for: What is the bigger cylindrical part found at the end of USB cables but also some laptop PSU cables?

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It is a Ferrite Bead. They're used to reduce and dissipate high frequency noise. To prevent it from moving on the cable, it is overmoulded with plastic. Functionally, it is a dissipative low-pass filter. It's basically an inductor with very high rel…

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