Patents by Inventor Albert Hsu

Albert Hsu 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).

  • DC/AC inverter with adjustable gate-source voltage
    Patent number: 7502243
    Abstract: The present invention is a DC/AC inverter for converting a DC supply voltage signal to an AC voltage signal. The DC/AC inverter includes a drive circuit, a switch circuit, a transformer circuit and an auxiliary circuit. The drive circuit provides a first drive signal and a second drive signal. The switch circuit includes a high-side transistor for receiving the first drive signal from the drive circuit and a low-side transistor for receiving the second drive signal from the drive circuit. The switch circuit further receives the DC supply voltage signal and generates a voltage signal. The transformer circuit receives the voltage signal from the switch circuit and transforms it to the AC voltage signal. The auxiliary circuit adjusts a gate-source voltage of the high-side transistor and thus enables the DC/AC inverter to be applicable to a wide DC voltage supply range.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: March 10, 2009
    Assignee: O2Micro International Ltd.
    Inventor: Albert Hsu
  • DC/AC inverter with adjustable gate-source voltage
    Publication number: 20070291521
    Abstract: The present invention is a DC/AC inverter for converting a DC supply voltage signal to an AC voltage signal. The DC/AC inverter includes a drive circuit, a switch circuit, a transformer circuit and an auxiliary circuit. The drive circuit provides a first drive signal and a second drive signal. The switch circuit includes a high-side transistor for receiving the first drive signal from the drive circuit and a low-side transistor for receiving the second drive signal from the drive circuit. The switch circuit further receives the DC supply voltage signal and generates a voltage signal. The transformer circuit receives the voltage signal from the switch circuit and transforms it to the AC voltage signal. The auxiliary circuit adjusts a gate-source voltage of the high-side transistor and thus enables the DC/AC inverter to be applicable to a wide DC voltage supply range.
    Type: Application
    Filed: June 15, 2006
    Publication date: December 20, 2007
    Inventor: Albert Hsu
  • Table
    Patent number: D880200
    Type: Grant
    Filed: May 24, 2018
    Date of Patent: April 7, 2020
    Assignee: Seville Classics Inc.
    Inventors: James Sokol, Martin Avila, Mark Bevan, Albert Hsu