Rotation information detecting apparatus with noise...

Details Rotation information detecting apparatus with noise... Rotation information detecting apparatus with noise...

2006-05-30

2006-05-30

Patidar, Jay M. (Department: 2862)

Electricity: measuring and testing

Magnetic

Displacement

C324S207200, C324S207210

Reexamination Certificate

active

07053605

ABSTRACT:
There is provided a rotation information detecting apparatus which suppresses noise superimposed on an output line and can prevent detection of erroneous rotation information. A periodic changing magnetic field is applied to a detection element according to the rotation of a rotation object, and rotation information is detected. A signal processing circuit includes an output circuit for generating a binary output signal changing between a high level and a low level according to the rotation of the rotation object. The output circuit includes an output transistor, an output line connected to the output transister, a power supply terminal for the output transistor, and a noise suppression circuit connected between the output line and the power supply terminal a power supply terminal. The noise suppression circuit includes a diode and a current limiting resistor.

REFERENCES:
patent: 5289089 (1994-02-01), Aoki
patent: 6177793 (2001-01-01), Shinjo et al.
patent: 54-123825 (1979-09-01), None
patent: 11-304416 (1999-11-01), None

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