Patents by Inventor Jung Suk CHU

Jung Suk CHU 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 and DC-DC converter with voltage drop circuit therein
    Patent number: 9350242
    Abstract: A power supply includes a rectifier circuit to rectify power, a smoothing circuit unit to smoothen a voltage of the rectified power, and a voltage drop circuit unit to drop the smoothened voltage. The voltage drop circuit unit includes an electric charge storage circuit to output the voltage-dropped voltage, a resonance circuit to receive first current from the smoothing circuit unit and to supply second current to the electric charge storage circuit, and a current interruption circuit to control the first current and the second current using zero current switching for performing switching when current does not flow using a resonance circuit.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: May 24, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Joon Hwan Lee, Min Kwang Lee, Soon Bae Yang, Jae Jin Kim, Dong Gyu Lee, Jung Suk Chu
  • POWER SUPPLY AND DC-DC CONVERTER THEREIN
    Publication number: 20140327420
    Abstract: A power supply includes a rectifier circuit to rectify power, a smoothing circuit unit to smoothen a voltage of the rectified power, and a voltage drop circuit unit to drop the smoothened voltage. The voltage drop circuit unit includes an electric charge storage circuit to output the voltage-dropped voltage, a resonance circuit to receive first current from the smoothing circuit unit and to supply second current to the electric charge storage circuit, and a current interruption circuit to control the first current and the second current using zero current switching for performing switching when current does not flow using a resonance circuit.
    Type: Application
    Filed: April 22, 2014
    Publication date: November 6, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Joon Hwan LEE, Min Kwang LEE, Soon Bae YANG, Jae Jin KIM, Dong Gyu LEE, Jung Suk CHU