High resolution leveling resistor

Details High resolution leveling resistor High resolution leveling resistor

G - Physics

08

C

26/124, 340/137,

G08C 21/00 (2006.01)

Patent

CA 1261939

Abstract of the Disclosure An electrical lapping guide resistor for measuring the lapping distance in a process for manufacturing thin film magnetic transducers. Final throat height is measured with an electrical lapping guide resistor which provides a linear change in resistance versus lapping distance. The lapping guide resistor is configured in a shape such that the effective length of the resistors increases as the effective width decreases. In a preferred embodiment of the invention, the resistor includes first and second converging edges which extend from a rearward edge parallel to the final throat height toward the lapping surface. Conductors are disposed along the converging edges. Measurements of the change in lapping distance are effected by measuring the distance between the conductors.

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