Electricity: electrical systems and devices – Safety and protection of systems and devices – Load shunting by fault responsive means
Reexamination Certificate
2008-03-18
2008-03-18
Ha, Nguyen T. (Department: 2831)
Electricity: electrical systems and devices
Safety and protection of systems and devices
Load shunting by fault responsive means
C361S058000, C361S091200, C361S093100, C361S118000, C361S119000, C361S321100
Reexamination Certificate
active
11209559
ABSTRACT:
A capacitor circuit with surge protection that is selectively connected between a voltage source and a device includes a first capacitance element has one end that communicates with a first terminal of the voltage source. A first transistor has a first terminal that communicates with an opposite end of the first capacitance element and a second terminal that communicates with a second terminal of the voltage source. A control terminal of the first transistor communicates with a capacitor enable signal that provides a controlled turn-on to limit current surge and turns off the first transistor when voltage surge is detected.
REFERENCES:
patent: 5079455 (1992-01-01), McCafferty et al.
patent: 5532894 (1996-07-01), Sweaton
patent: 5598313 (1997-01-01), Gersbach
patent: 5621625 (1997-04-01), Bang
patent: 5796567 (1998-08-01), Botti et al.
patent: 6768619 (2004-07-01), Ker et al.
patent: 6927954 (2005-08-01), Boudreaux et al.
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