Patents by Inventor Hong-Chung Liu

Hong-Chung Liu 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).

  • A METHOD AND APPARATUS FOR PREVENTING OVERLOAD OF A DIGITAL POWER INVERTER
    Publication number: 20030218891
    Abstract: A digital electric power inverter comprising: a CPU, a PWM driving circuit, a PWM converting circuit, a rectifying circuit, an AC driving circuit, a DC/AC inverting circuit, an overload detecting circuit, a current detecting circuit and an alarm circuit, the power inverter is characterized by that: the entire circuitry of the electric power inverter is designed to be controlled by the CPU; with the CPU, the overload detecting and inductive load distinction ability, the output of the power inverter can be accurately controlled.
    Type: Application
    Filed: May 24, 2002
    Publication date: November 27, 2003
    Inventor: Hong-Chung Liu
  • DIGITAL POWER INVERTER AND METHOD OF CONTROLLING THE SAME
    Publication number: 20030218895
    Abstract: A digital electric power inverter comprising: a CPU, a PWM driving circuit, a PWM converting circuit, a rectifying circuit, an AC driving circuit, a DC/AC inverting circuit, a plurality of detecting circuits and an alarm circuit, the power inverter is characterized by that: the entire circuitry thereof is designed to be controlled by the CPU that can accurately control these circuits to endue the power inverter with an intact and multi-selection protecting function, thus render the parts thereof to develop their largest effects.
    Type: Application
    Filed: May 24, 2002
    Publication date: November 27, 2003
    Inventor: Hong-Chung Liu
  • Digital power inverter
    Publication number: 20030218837
    Abstract: A digital electric power inverter comprising: a CPU, a PWM driving circuit, a PWM converting circuit, a rectifying circuit, an AC driving circuit, a DC/AC inverting circuit, an overload detecting circuit and an alarm circuit, the power inverter is characterized by that: the entire circuitry of the electric power inverter is designed to be controlled by the CPU that can accurately control these circuits to get an ability of high driving outputting.
    Type: Application
    Filed: May 24, 2002
    Publication date: November 27, 2003
    Inventor: Hong-Chung Liu
  • Digital power inverter and method of controlling the same
    Patent number: 6646849
    Abstract: A digital electric power inverter comprising: a CPU, a PWM driving circuit, a PWM converting circuit, a rectifying circuit, an AC driving circuit, a DC/AC inverting circuit, a plurality of detecting circuits and an alarm circuit, the power inverter is characterized by that: the entire circuitry thereof is designed to be controlled by the CPU that can accurately control these circuits to endue the power inverter with an intact and multi-selection protecting function, thus render the parts thereof to develop their largest effects.
    Type: Grant
    Filed: May 24, 2002
    Date of Patent: November 11, 2003
    Assignee: Long Well Electronics Corp.
    Inventor: Hong-Chung Liu