Constant current, fast and float rate, variable hysteresis batte

Details Constant current, fast and float rate, variable hysteresis batte Constant current, fast and float rate, variable hysteresis batte

1986-07-25

1987-08-11

Hickey, R. J.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 39, 320DIG1, H02J 710

Patent

active

046864431

ABSTRACT:
A battery charger of the type which provides a constant current charge for charging batteries which may be used to charge batteries having a wide range of voltages and capacities. The charging circuit of the constant current battery charger of the present invention includes a conventional voltage source, three terminal regulators, fast and float charging rate resistors, a resistive divider for sensing battery voltage and integrated circuit means for providing drive current for a switching relay and for providing hysteresis. The circuit provides ready and complete adjustability of voltage range, fast and float current ranges and switching hysteresis range wherein these ranges are defined by linear relationships and may be changed by substituting passive components such as resistors.

REFERENCES:
patent: 3919618 (1975-11-01), Coleman et al.
patent: 4350946 (1982-09-01), Prinze
patent: 4426612 (1984-01-01), Wicnienski et al.

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