Hard Disk Drive Actuator Auto-Landing Zone Circuit
Original Publication Date: 1989-Aug-01
Included in the Prior Art Database: 2005-Jan-28
Disclosed is a circuit for an auto-head parking function of a hard disk drive. The auto-head function involves moving an actuator arm to an inner side or an outer side of a disk where a power supply is turned off. To achieve it, this circuit uses the kinetic energy of a spindle motor for driving disks. This circuit provides the electric current of a coil of a spindle motor to a VCM (Voice Coil Motor) at the moment when the power supply is turned off.