Battery charging circuit

Details Battery charging circuit Battery charging circuit

1977-11-02

1979-08-14

Hickey, Robert J.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

58 23C, 320 40, H02J 704

Patent

active

041646983

ABSTRACT:
A circuit for use in charging a battery from a current source, such as a solar cell, includes a Zener diode, a current limiting resistor in series with the Zener diode, and a switch which shunts the resistor. In periods of high current output from the solar cell, the resistor is shunted allowing the Zener diode to limit the charging current to the battery in order to prevent damage thereto. In periods of low current output from the solar cell, the resistor limits the power consumption of the Zener diode to insure sufficient power delivery to the battery.

REFERENCES:
patent: 3205422 (1965-09-01), Gold
patent: 3263092 (1966-07-01), Knauss
patent: 3312889 (1967-04-01), Gold
patent: 3426263 (1969-02-01), Hennigan et al.
patent: 3979656 (1976-09-01), Takeda et al.

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