Circuit and method for protecting emergency head-retract...

Details Circuit and method for protecting emergency head-retract... Circuit and method for protecting emergency head-retract...

2008-10-13

2009-11-24

Olson, Jason C (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C320S166000, C361S015000

Reexamination Certificate

active

07623316

ABSTRACT:
A charging system includes a current source, a voltage pump, and a comparator that compares a charging level of a capacitor to each of a first threshold and a second threshold. A controller turns on the voltage pump and turns off the current source after the charging level exceeds the first threshold, and turns off the voltage pump and turns on the current source when the charging level falls below the second threshold. The first threshold is greater than the second threshold.

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