Resistance mode comparator for determining head resistance

Details Resistance mode comparator for determining head resistance Resistance mode comparator for determining head resistance

2005-05-27

2009-12-08

Nguyen, Hoa T (Department: 2627)

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General recording or reproducing

Specifics of biasing or erasing

C360S046000, C360S067000, C360S110000, C360S313000

Reexamination Certificate

active

07630159

ABSTRACT:
An apparatus and method for determining a resistance of a magneto-resistive head. A current drawn by the head, in response to a fixed bias voltage across the head, is converted to a zero temperature coefficient current such that when supplied to a resistor connected to an input terminal of a comparator the effects of variations in the resistance value are avoided. An output signal of the comparator indicates the resistance of the magneto-resistive head.

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