Detector for shorted rotating diode of a brushless alternator

Details Detector for shorted rotating diode of a brushless alternator Detector for shorted rotating diode of a brushless alternator

1983-11-25

1985-07-09

Hickey, R. J.

Electricity: single generator systems

With signals, indicators, recorders, testing, etc.

324158MG, 361 21, H02H 706

Patent

active

045284938

ABSTRACT:
A circuit for detecting the occurrence of a shorted diode in the rotating rectifier of a brushless alternator. A comparator has connected to it signals representing the base drive to the voltage regulator output transistor and the voltage at the terminal of the generator field winding connected with the collector-emitter circuit of the output transistor. The occurrence of a field winding terminal voltage of the order of the voltage at the anode of the diode which shunts the voltage regulator output transistor, in the absence of a drive signal to the transistor, indicates that there is a shorted rectifier diode.

REFERENCES:
patent: 3534228 (1970-10-01), Hyvarinen et al.
patent: 3705331 (1972-12-01), South et al.
patent: 4041369 (1977-08-01), King et al.
patent: 4178546 (1979-12-01), Hulls et al.
patent: 4348629 (1982-09-01), Sievers

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