Switched boost voltage generator for actuator retract in disk dr

Details Switched boost voltage generator for actuator retract in disk dr Switched boost voltage generator for actuator retract in disk dr

1996-06-05

1998-04-07

Tran, Thang V.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7303, 318254, 318560, G11B 2102

Patent

active

057371440

ABSTRACT:
A voltage boost circuit within a hard disk drive is realized by switching a center tap node of a three phase spindle motor to ground during a power down sequence, thereby employing inductance of the spindle motor as a voltage boost inductor. The boosted voltage is rectified and stored in a capacitor for use, e.g. to control a source transistor of an actuator driver during an actuator retract operation.

REFERENCES:
patent: 4371903 (1983-02-01), Lewis
patent: 4658308 (1987-04-01), Sander, Jr.
patent: 5208518 (1993-05-01), Grapenthin et al.
patent: 5218253 (1993-06-01), Morehouse et al.
patent: 5473238 (1995-12-01), Latham, II et al.
patent: 5495372 (1996-02-01), Bahlmann et al.
patent: 5633568 (1997-05-01), Dunfield
"DC-DC Converters", The Electrical Engineering Handbook , Dorf, Ed., CRC Press, Boca Raton, FL, .COPYRGT.1993, pp. 708-709.

Affiliated with

Also associated with

Rating

Switched boost voltage generator for actuator retract in disk dr does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Switched boost voltage generator for actuator retract in disk dr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Switched boost voltage generator for actuator retract in disk dr will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-18516