Patents by Inventor Yukio Ohsaka

Yukio Ohsaka 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).

  • Switching type power supply circuit
    Patent number: 4258309
    Abstract: A switching type power supply circuit having a series connection of a switching element and an inductance element connected between output terminals of a DC voltage source, a series connection of a fly-wheel diode and a detecting resistor connected between the junction of the switching element and inductance element and the ground, and a capacitor connected between the junction of the inductance element and the DC voltage source and the ground, in which when a voltage across the detecting resistor exceeds a predetermined level, the supply of the switching pulse to the switching element is stopped to render the switching element OFF.
    Type: Grant
    Filed: July 5, 1979
    Date of Patent: March 24, 1981
    Assignee: Sony Corporation
    Inventors: Yukio Ohsaka, Takaharu Ikeda