Charging generator controlling device

Details Charging generator controlling device Charging generator controlling device

1984-05-17

1985-12-24

Eisenzopf, Reinhard J.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Generator protective circuits

322 28, H02H 706

Patent

active

045610363

ABSTRACT:
A charging generator controlling device including a protective circuit for protecting against excess current flow due to a short circuit. The device includes a charging generator, a rectifier, a battery, a voltage regulator circuit, a charge display lamp, a load and a current path switching device, as in a conventional device. The protective circuit includes an excess current detecting transistor coupled to be rendered conductive when the current flowing from the battery through the keyswitch to the field coil of the charging generator exceeds a predetermined value, in which case current is supplied from the battery through the keyswitch to a capacitor connected in a discharge loop. A comparator generates an output which drives a current switching device to energize the charge display lamp instead of the load and render a transistor series-connected with the field coil nonconductive during a predetermined period when the voltage across the capacitor exceeds a predetermined value.

REFERENCES:
patent: 3942097 (1976-03-01), Itoh et al.
patent: 4262243 (1981-04-01), Mori et al.
patent: 4435676 (1984-03-01), Morishita
patent: 4455525 (1984-06-01), Morishita et al.
patent: 4471287 (1984-09-01), Morishita et al.

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