Electromagnetic

November 22, 2009
Tags: electronics, hard drive

Hard drives contain several strong magnets that interact with a wire coil on the actuator arm. As the coil is electrified, the arm moves the heads across the surface of the disk. As a took apart one drive, I unraveled the wire coil to reveal its true length.

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Moshe
November 23, 2009
9:13 am

And it looks like 1/3 of it is still unravelled!

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