Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells
Reexamination Certificate
2007-12-06
2010-10-12
Tso, Edward (Department: 2858)
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
C320S121000, C320S166000, C324S426000, C324S434000
Reexamination Certificate
active
07812568
ABSTRACT:
A voltage detecting circuit comprises: an operational amplifier whose one input terminal is applied with a first reference voltage; a first capacitor whose one end is connected to the other input terminal of the operational amplifier; a second capacitor whose one end is connected to an output terminal of the operational amplifier, and whose other end is connected to the other input terminal of the operational amplifier; a switch circuit for applying a first voltage and a second voltage sequentially to the other end of the first capacitor; and a discharging circuit for discharging the second capacitor before the second voltage is applied to the other end of the first capacitor, a difference between the first voltage and the second voltage being detected based on a voltage at the output terminal of the operational amplifier after the second voltage is applied to the other end of the first capacitor.
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Diao M'Baye
Gunther John E.
Sanyo Electric Co,. Ltd.
Sanyo Semiconductor Co. Ltd.
Sereboff Steven C.
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