Patents by Inventor Man-Tang Chang

Man-Tang Chang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Power supply apparatus
    Patent number: 10608527
    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.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: March 31, 2020
    Assignee: I-SHOU UNIVERSITY
    Inventors: Chun-An Cheng, Er-Yun Chang, Chin-Chih Lai, Man-Tang Chang
  • POWER SUPPLY APPARATUS
    Publication number: 20190372455
    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.
    Type: Application
    Filed: June 1, 2018
    Publication date: December 5, 2019
    Applicant: I-SHOU UNIVERSITY
    Inventors: Chun-An Cheng, Er-Yun Chang, Chin-Chih Lai, Man-Tang Chang