| 摘要 |
PROBLEM TO BE SOLVED: To easily and surely inspect the unstability of output around a bias point by applying a current to an inductive element without impressing the magnetic field on a magnetic head from the outside and measuring the output characteristic of an MR element after the application of this current is finished. SOLUTION: A sense current is applied to the MR element by aligning the output terminal of the MR element of the magnetic head to be inspected and a 1st probe pin 12a and aligning the input terminal of the inductive element and a 2nd probe pin 12b. Next, after the supply of a rectangular current to the inductive element of the head to be inspected is finished, a voltage from the output terminal of the MR element is detected in the state in which the sense current is applied, and is subjected to A/D conversion to fetch as data. These data are analyzed by a control computer 20 to calculate the standard deviation, the maximum value and the minimum value, etc., of the output voltage, and by these obtained values, the decision of the normal/defective article is made in accordance with the existence of the unstability of the output of this magnetic head.
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