Alternator/starter testing device

  • US 5,701,089 A
  • Filed: 10/12/1995
  • Issued: 12/23/1997
  • Est. Priority Date: 10/12/1995
  • Status: Expired due to Fees
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First Claim
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1. A device for testing an alternator which has been removed from an automobile, comprising:

  • a motor adapted to be temporarily coupled to the alternator for rotating an armature of the alternator as part of a test;

    a test coupling jack, adapted to be electrically connected to a corresponding connector on the alternator, the test coupling jack comprising a battery line connector, a ground line connector, and a field line connector, each line connector for connecting to a corresponding circuit in the alternator;

    a power supply for simulating an automobile battery voltage, an output thereof coupled to the battery line connector;

    a voltage regulator having a first terminal coupled to the power supply and to the battery line connector, and a second terminal coupled to the field line connector, wherein the voltage regulator regulates a voltage present at the first terminal by controlling a voltage at the second terminal;

    a meter coupled to the battery line connector for displaying a voltage generated by the alternator in response to the test; and

    a meter disconnect switch, coupled to the meter and to the power supply, for disconnecting the meter when the power supply is connected to the battery line of the alternator.

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