Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Gary Jonker0
Paul A. Willems0
Alan D. Goetzelmann0
Alejandro P. Brott0
Dennis G. Thibedeau0
Date of Patent
May 8, 2007
0Patent Application Number
106191870
Date Filed
July 15, 2003
0Patent Citations Received
Patent Primary Examiner
Patent abstract
An automated method is provided for testing an electrical circuit using a system tester. Load leads and sense leads of the tester are connectable to any two points of an electrical circuit, such as in a vehicle system, for displaying in real time the impedance between the tested circuit points. A controller is responsive to various sensed signals to calculate impedance, admittance or conductance, and related parameters, such as available cranking current, and provide results for read out or display. A load may be connected across the circuit points under test, the sensed signals derived from a current sense amplifier, a DC voltage amplifier, a ripple amplifier, and an AC amplifier.
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