Patents by Inventor Ki D. Kang

Ki D. Kang 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).

  • Multiple transformer switch mode power supply
    Patent number: 5124906
    Abstract: A switch mode power supply (10) including a switch control circuit (26), a switching device (28), and a plurality of transformers (38) and (40) is disclosed. Turns ratios of the transformers (38) and (40) are selected to produce desired output voltages within acceptable tolerances. A voltage from an output (46) is selected as a feedback voltage and is provided through an isolator (76) to the switch control circuit (26) for regulation thereof. The power supply (10) is characterized in that desired output voltages are produced without the use of supplementary voltage regulators. Output voltages from the transformers (38) are combined and rectified, as required, to produce needed derivative voltages.
    Type: Grant
    Filed: January 12, 1990
    Date of Patent: June 23, 1992
    Inventor: Ki D. Kang