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:
Oct. 25, 2016
Filed:
May. 24, 2013
Applicant:
Keithley Instruments, Inc., Cleveland, OH (US);
Inventors:
Wayne C. Goeke, Hudson, OH (US);
John C. Gibbons, Macedonia, OH (US);
Assignee:
KEITHLEY INSTRUMENTS, INC., Cleveland, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 27/36 (2006.01); H01F 17/04 (2006.01); H01F 27/28 (2006.01);
U.S. Cl.
CPC ...
H01F 27/362 (2013.01); H01F 27/288 (2013.01); H01F 2027/2833 (2013.01);
Abstract
An isolated DC-to-DC switching power supply includes an isolation transformer having a magnetic core, a first winding around the magnetic core, a first winding-shield around the magnetic core, a second winding-shield within the first winding-shield, and a second winding within the second winding-shield. There is no direct coupling between the first winding and the second winding since the second winding is enclosed within the second winding-shield and the second winding-shield is enclosed within the first winding-shield.