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:
Aug. 28, 2018
Filed:
Mar. 27, 2014
Microsoft Technology Licensing, Llc, Redmond, WA (US);
Chee Kiong Fong, Cupertino, CA (US);
David Richard Perchilk, Redmond, CA (US);
Suet Fong Tin, Redmond, WA (US);
Michael Donovan Rulien, Auburn, WA (US);
Perry Samuel Stultz, Carnation, WA (US);
Edward C. Giaimo, III, Bellevue, WA (US);
MICROSOFT TECHNOLOGY LICENSING, LLC, Redmond, WA (US);
Abstract
A leakage reduction circuit is described herein that is configured to reduce high voltage leakage that may occur in electrical power step-down scenarios. The leakage reduction circuit, for instance, may be employed in a power adapter for a client device, such as a mobile computing device. For example, a power adapter may include a high voltage alternating current (AC) input, and circuitry for converting the AC input into lower voltage direct current (DC) for output to a client device. Implementations of the disclosed leakage reduction circuit include an arrangement of capacitors that provides a noise return path (e.g., for common mode noise) in a power adapter, while reducing high voltage leakage that may occur from a high voltage AC input to a lower voltage DC output of the power adapter.