Reverse battery protection circuit for power switch

Details Reverse battery protection circuit for power switch Reverse battery protection circuit for power switch

2007-10-30

2007-10-30

Deberadinis, Robert L. (Department: 2836)

Electrical transmission or interconnection systems

Switching systems

Condition responsive

Reexamination Certificate

active

10841313

ABSTRACT:
A circuit for protecting a power switch in the event of a reverse battery connection, wherein the power switch comprises a MOSFET having a body diode and the MOSFET is connected in series with a load, the circuit comprising terminals connected to the circuit and normally connectable to respective positive and negative power potentials of the battery, and the circuit comprising a switching circuit coupled to the terminals such that the switching circuit turns on the power switch in the event that the terminals are connected with a reverse battery connection.

REFERENCES:
patent: 4992683 (1991-02-01), Robin, Jr.
patent: 6034448 (2000-03-01), Xu et al.
patent: 37 41 394 (1989-06-01), None
patent: 195 34 159 (1997-03-01), None
patent: 197 42 169 (1999-04-01), None
patent: 6-129337 (1994-05-01), None
R.G. Keen, Advanced Power Switching and Polarity Protection for Effects, 1999, pp. 1-4.
Official Notice of Rejection mailed Jul. 7, 2006 from Japanese Patent Office with English language translation.
Official Letter dated Jul. 6, 2005 from German Patent Office with partial English language translation.

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