Ever Wondered What This Small Cylinder In Your Laptop Charger Is For?

#1 What’s That For?

Many of us have absolutely no clue what the pieces on our electronic devices are for…because we’re only worried if they work or not!

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#2 Laptop Charger

Take your charger for example, have you ever realized there’s an additional cylinder piece on the chord that seems to be there for no reason?

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#3 Isolate Noise

Well it’s actually used to isolate electro-magnetic noise, and block the cable waves or noise in AC-DC converter.

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#4 EMI ring

This one small piece scatters currents in a ferrite ceramic, and is generally called a core, block, or EMI ring.

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