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:
Dec. 15, 2015
Filed:
May. 17, 2012
John O'connell, Painesville, OH (US);
Dale Terdan, Concord Township, OH (US);
David A. Pasela, Seven Hills, OH (US);
Charmaine J. Van Minnen, Aurora, OH (US);
Bret S. Hildebran, Chagrin Falls, OH (US);
John O'Connell, Painesville, OH (US);
Dale Terdan, Concord Township, OH (US);
David A. Pasela, Seven Hills, OH (US);
Charmaine J. Van Minnen, Aurora, OH (US);
Bret S. Hildebran, Chagrin Falls, OH (US);
Rockwell Automation Technologies, Inc., Mayfield Heighs, OH (US);
Abstract
An I/O circuit for use with an industrial controller provides a photovoltaic optical isolator communicating between a controller and a field-side of the I/O circuit, the photovoltaic optical isolator eliminating the need for high wattage power dropping circuits for powering the field-side of the I/O circuit from high-voltage field signals. The field effect transistor type transistors permit use of the low-power photovoltaic optical isolator while allowing flexible connections to various field circuit types.