Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1977-07-14
1979-05-01
Hickey, Robert J.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 32, 320 39, H02J 704
Patent
active
041526350
ABSTRACT:
A battery charging circuit employing three operational amplifiers, one to sense charging current and two to regulate constant voltage charging, one for low rate or float level and one for high rate charging. A resistance element acts as part of the current sensing circuit and also limits charge current. A Zener diode provides a voltage reference and aids in sensing deviations of actual terminal voltage from desired terminal voltage to provide feedback control to the voltage regulating operational amplifiers.
REFERENCES:
patent: 3517295 (1970-06-01), Lapuyade
patent: 3699422 (1972-10-01), Miller et al.
Hickey Robert J.
Research Development Systems, Inc.
Wagner John E.
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