Patents by Inventor Shigetada Goto

Shigetada Goto 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).

  • Transistor drive circuit
    Patent number: 4709161
    Abstract: A circuit arrangement for retaining a main transistor in a conductive state while receiving an external turn-on control signal and bringing the main transistor to a complete cut-off state in response to an external turn-off control signal includes a circuit provided on the primary side of a transformer for supplying a turn-on signal or turn-off signal to the main transistor in response to the turn-on or turn-off control signal and a constant current circuit for maintaining the transformer primary current constant so that the currents derived from the turn-on and turn-off signals are kept constant.
    Type: Grant
    Filed: March 28, 1986
    Date of Patent: November 24, 1987
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Fumio Mizohata, Shigetada Goto