Disk drive having electrically parallel actuator coils for...

Details Disk drive having electrically parallel actuator coils for... Disk drive having electrically parallel actuator coils for...

2005-09-20

2005-09-20

Hudspeth, David (Department: 2651)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S265000

Reexamination Certificate

active

06947251

ABSTRACT:
A disk drive includes a disk, a voltage supply, a head stack assembly and a switching circuit. The head stack may include a coil portion that includes a coil assembly having first and second wound coils. The switching circuit is electrically coupled to the voltage supply and to the coil assembly, and is configured to selectively switch the first and second wound coils between a first configuration and a second different configuration in which the first wound coil is electrically in parallel with the second wound coil.

REFERENCES:
patent: 5991124 (1999-11-01), Forbord
patent: 6104581 (2000-08-01), Huang et al.

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