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:
Nov. 20, 2012
Filed:
Sep. 04, 2008
Ho-woong Kang, Yongin-si, KR;
Ho-woong Kang, Yongin-si, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
A method for selecting an electric power supply and a circuit thereof are provided. The method includes detecting whether there is an output signal from a high electric power source, connecting a low electric power source with input of a transformer if there is no output signal from the high electric power source, disconnecting output of the transformer with a general circuit if there is no output signal from the high electric power source, transforming a voltage received from the low electric power source, and outputting the transformed voltage to a control unit. By disconnecting the output of the transformer with the general circuit, the low power source may reduce waste of an electric power.