Patents by Inventor Yukio Ikarashi

Yukio Ikarashi 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 unit, parallel operation control circuit applied thereto, and parallel operation control method
    Patent number: 6014322
    Abstract: An anode voltage of a diode for reverse current prevention provided in each power supply module is output to a current balance control terminal via a resistor. The current balance control terminals of the respective power supply modules are mutually connected, and an average level of the anode voltages in the reverse current prevention diodes of the respective power supply modules is applied to the current balance control terminals as a reference voltage level. By executing the switching control for the power MOSFET in each power supply module so as to make the anode voltage of the reverse current prevention diode in each power supply module equal to the reference voltage, the output current values of the respective power supply modules are set to be equal.
    Type: Grant
    Filed: June 26, 1998
    Date of Patent: January 11, 2000
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shinya Higashi, Yukio Ikarashi