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Battery string performance measurement

  • US 7,772,852 B2
  • Filed: 05/24/2005
  • Issued: 08/10/2010
  • Est. Priority Date: 07/21/2004
  • Status: Active Grant
First Claim
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1. A resistance measuring apparatus comprising:

  • a first voltmeter;

    an ammeter;

    a first terminal of the ammeter connected to a first terminal of a first voltmeter;

    a second terminal of the first voltmeter connected to ground;

    a second terminal of the ammeter connected to a first external connection terminal;

    a second external connection terminal connected to ground;

    an output terminal connected to the first terminal of the ammeter;

    a DC power supply, the DC power supply connected to the first terminal of the ammeter; and

    a controller configured to communicate with the DC power supply and control an output voltage of the DC power supply,wherein the DC power supply is not a battery.

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