Patent ID: 6947251
Filing Date: 2005-09-20
Classification: G11B

Abstract:
1. A disk drive, comprising: a disk; a single supply of voltage; a head stack assembly for reading and writing to the disk, including: a body portion; an actuator arm cantilevered from the body portion; a coil portion cantilevered from the body portion in an opposite direction from the actuator arm, the coil portion including a coil assembly having a first wound coil and a second wound coil, the first coil defining a first pair of coil leads and the second wound coil defining a second pair of coil leads, and a switching circuit electrically coupled to the single supply of voltage and to the first and second pairs of coil leads, the switching circuit being configured to selectively switch the first and second wound coils between a first configuration and a second configuration in which the first wound coil is electrically in parallel with the second wound coil, the second configuration being different from the first configuration.