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HDD read/write channel

HDD read/write channel consists of a preamplifier/commutator (located inside HDA), read circuit, write circuit and a synchronizing clock.

 

Drive preamplifier has several channels, each being connected to its respective head. The channels are switched by signals from the drive’s microprocessor. Preamplifier also contains a recording current switch and recording error sensor, which emits an error signal if a short circuit or break occurs in a magnetic head.

 

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