Electrical transmission or interconnection systems – Plural supply circuits or sources – Connecting or disconnecting
Reexamination Certificate
2008-05-13
2010-11-16
Paladini, Albert W (Department: 2836)
Electrical transmission or interconnection systems
Plural supply circuits or sources
Connecting or disconnecting
C307S130000
Reexamination Certificate
active
07834481
ABSTRACT:
A threshold detection circuit includes, in one embodiment, a comparator having a first input connection for receiving a backup voltage from a backup power source, a second input connection for receiving a primary voltage from a primary power source, and an output connection for providing an output voltage; a first resistor and a first capacitor that are coupled in series between the first input connection and the output connection; and a second resistor that is coupled between the first input connection and the output connection, and that is coupled in parallel to the series of first resistor and the first capacitor.
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Anderson John D.
Duggan Michael P.
Cavallari Daniel
Paladini Albert W
Scientific-Atlanta, Inc.
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