The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 08, 2007
Filed:
Jul. 15, 2003
Dennis G. Thibedeau, Franklin, WI (US);
Gary Jonker, Kenosha, WI (US);
Alejandro P. Brott, Chicago, IL (US);
Paul A. Willems, Kenosha, WI (US);
Alan D. Goetzelmann, Wheeling, IL (US);
Dennis G. Thibedeau, Franklin, WI (US);
Gary Jonker, Kenosha, WI (US);
Alejandro P. Brott, Chicago, IL (US);
Paul A. Willems, Kenosha, WI (US);
Alan D. Goetzelmann, Wheeling, IL (US);
Snap-On Incorporated, Kenosha, WI (US);
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.