초록 ▼

A detector monitoring the function of the stator and rectifying diodes in a multiphase alternator battery charging system is disclosed. A circuit combines individual phase signals from the alternator to form an artificial neutral at which a normally symmetric wave signal is present. A first comparis

A detector monitoring the function of the stator and rectifying diodes in a multiphase alternator battery charging system is disclosed. A circuit combines individual phase signals from the alternator to form an artificial neutral at which a normally symmetric wave signal is present. A first comparison means detects deviations in the normally symmetric wave signal greater in value than a first threshold voltage level. A second comparison means detects deviations in the normally symmetric wave signal lesser than a second threshold voltage level. Means coupled to the first and second comparators produce an output signal whenever the normally symmetric wave signal deviates above the first threshold voltage level or below the second threshold voltage level. The detection of assymmetry in the normally symmetric wave signal indicates a fault in the stator or rectifying diodes of the alternator.

대표청구항 ▼

In a multiphase alternator battery charging system, said alternator producing a rectified electrical signal for charging said battery, a detector monitoring the function of the stator and rectifying diodes of said alternator comprising: means coupled between said stator and said rectifying diodes, c

In a multiphase alternator battery charging system, said alternator producing a rectified electrical signal for charging said battery, a detector monitoring the function of the stator and rectifying diodes of said alternator comprising: means coupled between said stator and said rectifying diodes, combining the individual phase signals of said alternator to produce a normally symmetric wave signal representative of the proper performance of said stator and diodes in said alternator; first and second comparison means coupled to said combining means, said first comparison means detecting deviations in said normally symmetric wave signal greater in magnitude than a first threshold value, and said second comparison means detecting deviations in said normally symmetric wave signal lesser in magnitude than a second threshold value; and means producing an output signal whenever said normally symmetric wave signal deviates above said first threshold value or below said second threshold value.