Battery charger and power supply circuitry

Details Battery charger and power supply circuitry Battery charger and power supply circuitry

1978-10-05

1982-03-23

Hickey, Robert J.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 21, 320 39, 320 59, H02J 710

Patent

active

043215238

ABSTRACT:
A transformerless battery charging circuit is described including a rectifier, a semiconductor switch in series with the battery, a sensing network monitoring battery voltage, a trigger circuit responsive to the sensed battery voltage for controlling operation of the semiconductor switch, and a voltage regulator for regulating output voltage of the rectifier as supplied to the triggering and battery voltage sensing networks. The circuitry in combination with an appropriate rechargeable battery also serves as a power supply to drive a DC load connected to the battery.

REFERENCES:
patent: 3586955 (1971-06-01), Kisiel
patent: 3708738 (1973-01-01), Crawford et al.
patent: 3842288 (1974-10-01), Bradshaw
patent: 3867682 (1975-02-01), Yamauchi et al.
patent: 3876921 (1975-04-01), Bigbee
patent: 3970912 (1976-07-01), Hoffman
patent: 3987354 (1976-10-01), Mason
patent: 4039920 (1977-08-01), Popp

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