Ripple detecting polarity indicator for battery charger

Details Ripple detecting polarity indicator for battery charger Ripple detecting polarity indicator for battery charger

1986-02-18

1987-03-31

Hickey, R. J.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 48, 340636, H02J 710

Patent

active

046545751

ABSTRACT:
A ripple current component detecting circuitry embodied in the terminal of a cable connecting a battery charger with a lead acid storage battery to improve safety of use by preventing the indication of a correct polarity of connection where a charger is energized before connection is made with the battery when in fact such an indication may be incorrect, the prevention of such an indication being accomplished by the utilization of the AC ripple component in the charger output. The circuitry detects the ripple and with its use overrides what would otherwise be given as a misleading indication of polarity.

REFERENCES:
patent: 3259754 (1966-07-01), Matheson
patent: 3308365 (1967-03-01), St. John
patent: 3659183 (1972-04-01), Carlson
patent: 3890555 (1975-06-01), Nelson
patent: 4163134 (1979-07-01), Budress
patent: 4166241 (1979-08-01), Grant
patent: 4217534 (1980-08-01), Cole
patent: 4238722 (1980-12-01), Ford
patent: 4272142 (1981-07-01), Zapf
patent: 4400658 (1983-08-01), Yates

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