Electricity: measuring and testing – Electrical speed measuring – Including speed-related frequency generator
Patent
1995-06-20
1997-05-20
O'Shea, Sandra L.
Electricity: measuring and testing
Electrical speed measuring
Including speed-related frequency generator
29607, G01P 348, H01F 706
Patent
active
056315562
ABSTRACT:
A rotation sensor device capable of detecting rotation speed of a rotatable magnetic member with high accuracy and reliability even in a low rotation speed range and a method of manufacturing the same through simplified process. As a means for detecting a rotation frequency of a toothed-wheel-like rotatable magnetic member (100), a permanent magnet (25) and a magneto-electric conversion element (22) are used. Conductors (24) having these elements (22; 25) mounted at a tip end portion is embedded integrally in a base (23) of a resin material through an insert molding process such that the elements (22; 25) and those portions of the conductors which constitute mounting electrodes are exposed at least partially on the surface of the base (23). Electronic parts (26) are packaged on the mounting electrode portions (24a).
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patent: 5010263 (1991-04-01), Murata
patent: 5121289 (1992-06-01), Gagliardi
patent: 5414355 (1995-05-01), Davidson et al.
patent: 5418455 (1995-05-01), Takaishi et al.
patent: 5488294 (1996-01-01), Liddell et al.
Klaus Fischer, Rotation Sensor Device Using a Differential-Hall-IC, Apr. 1991, pp. 86, 95-97.
Mitsubishi Denki & Kabushiki Kaisha
O'Shea Sandra L.
Phillips Roger
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