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:
Mar. 31, 2020
Filed:
Jun. 01, 2018
I-shou University, Kaohsiung, TW;
Chun-An Cheng, Kaohsiung, TW;
Er-Yun Chang, Kaohsiung, TW;
Chin-Chih Lai, Kaohsiung, TW;
Man-Tang Chang, Kaohsiung, TW;
I-SHOU UNIVERSITY, Kaohsiung, TW;
Abstract
A power supply apparatus for driving a light emitting apparatus is provided. The power supply apparatus includes a lossless snubber circuit and a power converting circuit. The lossless snubber circuit has a first diode, a first inductor and a second diode coupled in series between an input end and a first reference end, and has a first capacitor coupled between the first diode and a second reference end. The power converting circuit has a switch, a transformer and a second indictor. The switch is coupled between the first and second reference ends, and is turned on or off according to a control signal. The second inductor is coupled to a first side of the transformer in parallel.