Capacitor charging control circuit

Details Capacitor charging control circuit Capacitor charging control circuit

2008-01-16

2010-06-22

Tso, Edward (Department: 2858)

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

Having variable number of cells or batteries in series

C320S118000, C320S166000

Reexamination Certificate

active

07741811

ABSTRACT:
A parallel monitor circuit having a simple circuit configuration, in which a voltage divider circuit can be formed with resistors having the same resistance value, includes plural capacitors are connected in series, and a bypass device of each of parallel monitor circuits is connected in parallel with each capacitor. Plural voltages Va different from one another by a constant voltage are sequentially outputted from a digital-to-analog converter, and the voltages Va are inputted to plural parallel monitor circuits. When a charging voltage is higher than a monitor voltage determined by the voltage Va, each capacitor discharges through the bypass device, and the capacitor is kept at a predetermined monitor voltage.

REFERENCES:
patent: 5969505 (1999-10-01), Okamura
patent: 6075378 (2000-06-01), Okamura
patent: 6133710 (2000-10-01), Okamura
patent: 7078914 (2006-07-01), Yano et al.
patent: 7248020 (2007-07-01), Hidaka et al.
patent: 7508165 (2009-03-01), Sobue et al.
patent: 7564217 (2009-07-01), Tanigawa et al.
patent: 3313647 (2002-05-01), None
patent: 2005-287155 (2005-10-01), None
English abstract of JP2000050495 published Feb. 18, 2000, esp@cenet database, 1 page.
English abstract of JP2005287155 published Oct. 13, 2005, esp@cenet database, 1 page.

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