Detector for shorted rotating diode

G - Physics – 01 – R

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324/17, 321/76,

G01R 31/34 (2006.01) H02H 7/06 (2006.01)

Patent

CA 1203281

Detector for Shorted Rotating Diode of a Brushless Alternator 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 col- lector-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, indi- cates that there is a shorted rectifier diode.

463640

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