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:
Dec. 03, 2019
Filed:
Feb. 28, 2017
Guangdong Bestek E-commerce Co., Ltd., Shenzhen, CN;
Tao Hou, Shenzhen, CN;
GUANGDONG BESTEK E-COMMERCE CO., LTD., Shenzhen, CN;
Abstract
A smart sine wave step-down converter is provided including: an input and rectifying unit; a high-frequency modulation unit including a first and a second switching tubes, the drain of the first switching tube being connected to an output terminal of the input and rectifying unit, the source of the first switching tube being connected to the drain of the second switching tube, the grids of the first and the second switching tubes being connected with two-path anti-phased PWM pulse signals; an inductance filtering unit including a inductor and a first capacitor, the front end of the inductor being connected to the source of the first switching tube; an inverting paraphase unit; a filter controlling unit including a third switching tube and an electrolytic capacitor having an anode connected to the output terminal of the input and rectifying unit and a cathode connected to the drain of the third switching tube.