Apparatus for controlling AC generator in vehicle

Details Apparatus for controlling AC generator in vehicle Apparatus for controlling AC generator in vehicle

1992-09-11

1993-11-23

Hickey, R. J.

Electricity: single generator systems

Automatic control of generator or driving means

Voltage of generator or circuit supplied

320 64, 322 99, H02J 714

Patent

active

052647790

ABSTRACT:
An apparatus for controlling an AC generator in a vehicle, the AC generator including an exciting coil and driven by an engine to generate an AC output which is rectified and fed to a battery, includes a pilot-lamp switching transistor device constituted by a Darlington-connection of transistors, the pilot-lamp switching transistor device having a base and a collector for turning a pilot lamp on/off, the pilot lamp being fed with a current from the battery through a key switch, a resistor connected between the base and the collector of the pilot-lamp switching transistor, an initial exciting transistor for controlling a current for the initial excitation of the exciting coil by the battery, a voltage detection circuit for detecting a voltage of the battery, and a voltage detection circuit switching transistor for controlling a switching operation of the voltage detection circuit. In the control apparatus, at least one of the initial exciting transistor and the voltage detection circuit switching transistor is driven by a collector potential of the pilot-lamp switching transistor.

REFERENCES:
patent: 4346338 (1982-08-01), Nakamoto et al.
patent: 4471287 (1984-09-01), Morishita et al.
patent: 4549128 (1985-10-01), Morishita et al.
patent: 4812732 (1989-03-01), Iwatani
patent: 4945277 (1990-07-01), Iwatani et al.

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