Electricity: single generator systems – With signals – indicators – recorders – testing – etc.
Patent
1975-12-17
1976-12-28
Hickey, Robert J.
Electricity: single generator systems
With signals, indicators, recorders, testing, etc.
320 48, 320 64, H02J 714, H02P 900
Patent
active
040004538
ABSTRACT:
A circuit for indicating faults in a storage battery charging system of the type including a voltage regulator controlled alternator field winding switching transistor and a rectifier circuit having a diode trio which supplies alternator field winding energizing current. A differential amplifier circuit, to which is applied normally equal reference and sensing potentials which become unbalanced with alternator faults, produces a first fault indicating signal in the event of an alternator malfunction and a transistor having the control electrode connected to the output of the field winding diode trio of the rectifier circuit produces a second fault indicating signal in the event of a failure of one of these diodes. These fault indicating signals trigger a transistor conductive to complete an energizing circuit for a fault indicating device. Additionally, an oscillator flashes the fault indicating device "on" and "off" in the event of a voltage regulator failure.
REFERENCES:
patent: 3656135 (1972-04-01), Ruff
patent: 3764879 (1973-10-01), Hill
patent: 3781633 (1973-12-01), Iwaki et al.
King Charles W.
Ruff Donald O.
Sheldrake Leonard J.
General Motors Corporation
Hickey Robert J.
Stahr Richard G.
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