Rotation angle detecting device having function of detecting...

Details Rotation angle detecting device having function of detecting... Rotation angle detecting device having function of detecting...

2007-05-15

2007-05-15

LeDynh, Bot (Department: 2862)

Electricity: measuring and testing

Magnetic

Displacement

Reexamination Certificate

active

11583064

ABSTRACT:
A rotation angle detecting device includes magnetic field forming members such as a permanent magnet and a yoke, a plurality of magnetic sensors disposed in the magnetic field to rotate relative to the magnetic field forming members to provide output signals that are 90 degrees in phase different from each other, a judgment level calculating circuit that provides a judgment level based on the output signals and judging circuit that judges the output signals normal if the judgment level is within a prescribed range and not normal if the judgment level is out of the prescribed range.

REFERENCES:
patent: 2002-104211 (2002-04-01), None
patent: 2003-75108 (2003-03-01), None

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