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:
Apr. 01, 2014
Filed:
Jun. 22, 2011
Jochen Aicher, Rietheim-Weilheim, DE;
Robert J. Alvord, Elmwood Park, IL (US);
James W. Kopec, St. Charles, IL (US);
VU T. Nguyen, Carol Stream, IL (US);
Jochen Aicher, Rietheim-Weilheim, DE;
Robert J. Alvord, Elmwood Park, IL (US);
James W. Kopec, St. Charles, IL (US);
Vu T. Nguyen, Carol Stream, IL (US);
Diehl AKO Stiftung & Co. KG, Wangen, DE;
Abstract
A diagnostic circuit is configured for connecting to a unit under test that has a load and a sinusoidal source. The diagnostic circuit includes a voltage sensing device that has an input for sensing a signal, a first terminal for connecting to the load, a second terminal for connecting to the sinusoidal source, and a relay connected between the first and second terminals for connecting the sinusoidal source to the load. Clamping diodes are provide for clamping a sinusoidal signal and include a first clamping diode connected between a D/C voltage source and the input and a second clamping diode connected between ground and the input. A resistor is connected between the D/C voltage source and the first terminal. The diagnostic circuit verifies the operational functionality of the load, related wiring and connections.