Method for fabrication of rear chip for hall effect magnetic hea

Details Method for fabrication of rear chip for hall effect magnetic hea Method for fabrication of rear chip for hall effect magnetic hea

1978-09-05

1980-02-05

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

360112, G11B 542

Patent

active

041864816

ABSTRACT:
A method for fabricating a rear core for the magnetic circuit of a Hall effect magnetic head is disclosed. The bottom size of the rear core protrusion is made substantially equal to the size of a Hall element. A gap is provided between the Hall element and the rear core. In order to minimize the gap, the rear core block is provided with supports for fabrication, whereby the gap between the Hall element and the bottom protrusion of the rear core is positioned accurately. The supports are removed at the end of fabrication. The bottom protrusion of the rear core prevented pressure from being applied to the Hall element, thus improving the sensitivity of the Hall effect magnetic head without increasing noises.

REFERENCES:
patent: 3943570 (1976-03-01), Yamamoto et al.

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