Patents by Inventor Kuang-Hua Pan

Kuang-Hua Pan 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).

  • Inrush current suppression circuit
    Patent number: 6646842
    Abstract: An inrush current suppression circuit is installed between a DC voltage and a load with a parallel system capacitor. The inrush current suppression circuit includes a first current limiting circuit which includes a first resistor, a first controlled switch, and a second controlled switch. The inrush current suppression circuit further includes a second current limiting circuit which further includes a second resistor, a third controlled switch, and an energy-storing capacitor. The second current limiting circuit is electrically connected in parallel to the system capacitor, and the first current limiting circuit is electrically connected with the DC voltage and the second current limiting circuit. When the DC voltage is detected, the first controlled switch is conducted. When a voltage of two ends of the load reaches a first threshold value, the second controlled switch is conducted so as to bypass the first resistor.
    Type: Grant
    Filed: March 14, 2002
    Date of Patent: November 11, 2003
    Assignee: Delta Electronics, Inc.
    Inventors: Kuang-Hua Pan, Chih-Ming Hsu
  • Inrush current suppression circuit
    Publication number: 20030107859
    Abstract: An inrush current suppression circuit is installed between a DC voltage and a load with a parallel system capacitor. The inrush current suppression circuit includes a first current limiting circuit which includes a first resistor, a first controlled switch, and a second controlled switch. The inrush current suppression circuit further includes a second current limiting circuit which further includes a second resistor, a third controlled switch, and an energy-storing capacitor. The second current limiting circuit is electrically connected in parallel to the system capacitor, and the first current limiting circuit is electrically connected with the DC voltage and the second current limiting circuit. When the DC voltage is detected, the first controlled switch is conducted. When a voltage of two ends of the load reaches a first threshold value, the second controlled switch is conducted so as to bypass the first resistor.
    Type: Application
    Filed: March 14, 2002
    Publication date: June 12, 2003
    Applicant: Delta Electronics, Inc.
    Inventors: Kuang-Hua Pan, Chih-Ming Hsu