Patents Assigned to Jang B. Lee
  • Electronic large current switch for a single power circuit
    Patent number: 4887198
    Abstract: An electronic large current switch for a single power circuit has a DC-to-DC converter for low voltage transformation, the operation of which is controlled by a control switch or a periodic switching circuit and a switching transistor supplied with the low voltage output of the DC-to-DC converter as its base bias voltage and which controls the power supply to an electrical load circuit so as to be capable of minimzing the power loss of the switching transistor and making the product small and integrated.
    Type: Grant
    Filed: March 1, 1988
    Date of Patent: December 12, 1989
    Assignee: Jang B. Lee
    Inventor: Youn S. Lee