Patent ID: 7061707
Filing Date: 2006-06-13
Classification: G11B

Abstract:
1. An apparatus for retracting a read/write head from a memory disk of a hard disk drive, comprising: a motor for moving the read/write head; a first power source coupled to said motor; a retract power source coupled to said first power source and said motor, said retract power source for providing said motor with power to retract the read/write head when said first power source is inactivated; electrical circuitry other than said motor and said power sources, said electrical circuitry coupled to said power sources; a first isolation device connected between said retract power source and said electrical circuitry for isolating said retract power source from said electrical circuitry when said first power source is inactivated; and a second isolation device connected between said motor and said retract power source for isolating said retract power source from said motor when said first power source is inactivated.