Magnetic detector

Details Magnetic detector Magnetic detector

2005-08-30

2005-08-30

LeDynh, Bot (Department: 2862)

Electricity: measuring and testing

Magnetic

Displacement

C324S207210, C324S252000, C324S174000

Reexamination Certificate

active

06937010

ABSTRACT:
A magnetic detector capable of being easily assembled and diminishing fluctuation in magnetic detection accuracy includes: magnetic resistance elements whose resistance value changes according to change in magnetic field generated by rotation of a multi-polarized rotor; an IC formed by integrating a signal processing circuit section that outputs a signal corresponding to multi-polarization of the rotor based on change in resistance values of the magnetic resistance elements; a lead frame mounted with the IC and connected to an external output terminal for externally outputting an output signal from the signal processing circuit section; a magnet applying a bias magnetic field to the magnetic resistance elements; and a magnetic guide for correcting lines of magnetic force from the magnet. The IC, lead frame and magnetic guide are preliminarily assembled to serve as a first assembly, and the magnet and external output terminal are preliminarily assembled to serve as a second assembly.

REFERENCES:
patent: 5637995 (1997-06-01), Izawa et al.
patent: 2004/0027712 (2004-02-01), Yokotani et al.
patent: 2004-69546 (2004-03-01), None

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