Alarm apparatus for vehicle-onboard AC generator

Details Alarm apparatus for vehicle-onboard AC generator Alarm apparatus for vehicle-onboard AC generator

1999-11-18

2000-10-31

Hofsass, Jeffery A.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340436, 340455, 340660, 340662, 322 28, 322 99, B60Q 100

Patent

active

061409154

ABSTRACT:
An alarm apparatus for a vehicle-onboard AC generator has an alarm function improved owing to detection of both output voltages of a pair of armature coils of the generator. The alarm apparatus includes an AC generator (1) driven by an engine of a motor vehicle and including a field coil (10) and a pair of armature coils (11, 12), a pair of rectifier circuits (21, 22; 21A, 22A) for rectifying output voltages generated by the paired armature coils (11, 12), respectively, a battery (5) charged by rectified outputs of the paired rectifier circuits (21, 22; 21A, 22A), a voltage regulator (3) for regulating the output voltages of the paired armature coils (11, 12) on the basis of either rectified output voltages of the rectifier circuits (21, 22; 21A, 22A) or a terminal voltage of the battery (5), and an alarm means (4A, 49) for generating an alarm when at least one of the output voltages of the paired armature coils (11, 12) deviates from a predetermined value (VR2).

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