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. 07, 2015
Filed:
Jul. 14, 2014
Applicant:
International Technological University, San Jose, CA (US);
Inventor:
Karl L. Wang, Los Altos, CA (US);
Assignee:
International Technological University, San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 1/20 (2006.01); G01R 19/00 (2006.01); G01R 15/22 (2006.01);
U.S. Cl.
CPC ...
G01R 15/22 (2013.01);
Abstract
A transformer-less method and system for voltage and current sensing using voltage drops across resistors is disclosed. Using optically coupled isolators, the sensed voltages in the high voltage power lines are optically coupled and electrically isolated to the low voltage circuits. The circuit designs for voltage and current sensing's and electrical isolation are disclosed.