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:
Feb. 28, 2017
Filed:
Oct. 17, 2014
Zhejiang Shenghui Lighting Co., Ltd, Jiaxing, CN;
ZHEJIANG SHENGHUI LIGHTING CO., LTD, Jiaxing, CN;
Abstract
A power circuit for an LED lighting device using discrete components is provided. The power circuit includes a filtering unit configured to filter an inputted AC and a rectifying unit configured to convert an AC to a DC. The power circuit also includes a transformer connected to the rectifying unit. Further, the power circuit includes a first switch and a second switch that are field effect transistors, wherein a grid electrode of the first switch is connected to a drain electrode of the second switch. Further, a drain electrode of the first switch is connected to the transformer. A source electrode of the first switch is connected to a source electrode of the second switch through a detection resistor. A grid electrode of the second switch is connected to the source electrode of the first switch through a thermistor.