Alternator test apparatus and method

Details Alternator test apparatus and method Alternator test apparatus and method

1978-01-06

1979-12-11

Rolinec, Rudolph V.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rotor

322 99, G01R 3100, G08B 2100

Patent

active

041785460

ABSTRACT:
An automobile alternator test apparatus tests for the presence of a failed diode by detecting a frequency component (a subharmonic component) in the alternator output ripple voltage produced by the failed diode. The subharmonic frequency component is detected by a tracking filter that is slaved to the subharmonic frequency of the ripple frequency voltage produced by the failed diode. The output signal of the slaved filter indicates the presence of the failed diode.

REFERENCES:
patent: 2123859 (1938-07-01), Winograd
patent: 3629704 (1971-12-01), Stevens
patent: 3977239 (1976-08-01), Hulls et al.
patent: 3978416 (1976-08-01), Sutphin et al.
patent: 3978719 (1976-09-01), Hadden et al.

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