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:
Mar. 28, 2006
Filed:
Dec. 29, 2003
Richard H. Breinlinger, Hampstead, NH (US);
Richard H. Breinlinger, Hampstead, NH (US);
Schneider Automation, SAS, Sophia Antipolis, FR;
Abstract
An interface circuit for use between an input circuit and an industrial automation system is disclosed. The industrial automation system includes an opto-coupler capable of being operably connected to the interface circuit. The interface circuit includes a first and second terminal, each terminal capable of being operably connected to the opto-coupler. A first current-source is operably connected to the first terminal and a second current-source is operably connected to the second terminal. A reference voltage is operably connected to the first current-source and the second current-source wherein the first and second current-source cooperate to provide a total input current in accordance with the operating characteristics of the industrial automation circuit.