Patents by Inventor Yoon S. Ahn

Yoon S. Ahn 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).

  • Switched mode power supply controller having a stand-by state using a frequency divided burst mode
    Patent number: 5126930
    Abstract: The present invention relates to a power supply device adapted for various electric or/and electric instruments. The present invention generates lower voltages during a standby mode except for power to a microcomputer, using a frequency-dividing circuit and provides the normal output voltages in operation mode to minimize the power consumption without a relay circuit.
    Type: Grant
    Filed: December 28, 1990
    Date of Patent: June 30, 1992
    Assignee: SamSung Electronics Co., Ltd.
    Inventor: Yoon S. Ahn