Battery charging systems for road vehicles

Details Battery charging systems for road vehicles Battery charging systems for road vehicles

1980-03-07

1981-10-27

Hickey, Robert J.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

322 28, 322 59, 322 73, H02J 716

Patent

active

042976316

ABSTRACT:
A battery charging system includes an alternator with a rectifier connecting the alternator output to the battery. A voltage rectifier controls the current in the alternator field winding in accordance with the battery voltage. A transistor switch in the voltage regulator controls the bias current to the output stage of the regulator and is in turn controlled by a differential amplifier through a diode pump. The differential amplifier is connected to detect the presence of an a.c. on one phase of the alternator and causes the transistor to be switched off, disabling the output stage of the regulator, whenever no a.c. signal is present.

REFERENCES:
patent: 3496443 (1970-02-01), Snedeker et al.
patent: 3835363 (1974-09-01), Kirk
patent: 3982169 (1976-09-01), Cummins
patent: 4079306 (1978-03-01), Mori et al.

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