Patent ID: 6067200
Filing Date: 2000-05-23
Classification: G11B

Abstract:
A method for adjusting a bias current flowing through a magneto-resistive effect type magnetic head, comprising the steps of:supplying an examining current to the magneto-resistive effect type magnetic head;measuring a voltage applied to a pair of terminals of the magneto-resistive effect type magnetic head through which the examining current flows;calculating a resistance of the magneto-resistive effect type magnetic head according to the examining current and the voltage;calculating an allowable range of a magneto-resistive effect type bias current flowing through the magneto-resistive effect type magnetic head according to a relationship between the resistance and a life time of the magneto-resistive effect type magnetic head determined in advance; anddetermining an optimum value of the magneto-resistive effect type bias current as an optimum magneto-resistive effect type bias current within the allowable range.