Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Patent
1992-04-30
1993-10-12
Strecker, Gerard R.
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
324158MG, 324511, 324546, 322 99, G01R 3100, H02P 900
Patent
active
052529266
ABSTRACT:
An automotive charging circuit fault detection circuit includes a pseudo stator-phase signal generator and a stator-phase existence circuit for determining if a stator-phase signal is below a predetermined threshold. A pseudo stator-phase signal control circuit selectively applies the pseudo stator-phase signal to replace the stator-phase signal when the stator-phase existence circuit determines that the stator-phase signal is below the predetermined threshold. A voltage detector circuit continues the application of the pseudo stator-phase signal if an output voltage from the charging circuit is above a minimum voltage. A timer times a predetermined time the stator-phase signal is below the predetermined threshold to enable the voltage detection circuit, and a warning indicator provides a warning if the pseudo stator-phase signal is applied and if an output voltage from the charging circuit is below the minimum voltage.
REFERENCES:
patent: 4019120 (1977-04-01), Fattic
patent: 4379990 (1983-04-01), Sievers et al.
patent: 4755737 (1988-07-01), Komurasaki et al.
patent: 5079496 (1992-01-01), Pierret et al.
Bachand Richard A.
Do Diep
Jorgenson Lisa K.
Robinson Richard K.
SGS-Thomson Microelectronics Inc.
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