Sensor protection circuit

Details Sensor protection circuit Sensor protection circuit

2006-08-29

2006-08-29

Vu, Phuong T. (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

Reexamination Certificate

active

07099133

ABSTRACT:
The invention relates to a sensor protection circuit for at least one sensor (6), especially in a motor vehicle electric system, comprising at least one supply line (3, 4) for supplying current to the sensor (6) and a current measuring unit (8) for detecting the electric current flowing through the supply line (3), in order to prevent damage to the sensor (6) as a result of excess voltage. Said current measuring unit (8) is connected to a current limiting device or to a switch element in order to limit the current or to disconnect the supply line (3).

REFERENCES:
patent: 5414792 (1995-05-01), Shorey
patent: 6538866 (2003-03-01), Hanzawa et al.
patent: 0497478 (1992-08-01), None
patent: 0552471 (1993-07-01), None

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