Patents by Inventor Min-Ru Lee

Min-Ru Lee 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).

  • Patent number: 4847566
    Abstract: The stability of an amplifier output stage in driving a capacitive load and sinking increasing currents is enhanced by compensating for a reduction in V.sub.BE of a first emitter follower bipolar transistor connected to the amplifier output. This is accomplished by using a second emitter follower transistor with the two emitter follower transistors driving a differential amplifier with the output of the differential amplifier controlling the conductance of a sink MOS transistor connected to the amplifier output. Another MOS transistor is serially connected with the second emitter follower transistor with the gate terminal connected to the differential amplifier output whereby an increasing sinking current causes an increase in current through the second emitter follower transistor and an increase of V.sub.BE of the transistor, thereby increasing V.sub.BE of the first emitter follower transistor.
    Type: Grant
    Filed: February 9, 1988
    Date of Patent: July 11, 1989
    Assignee: Linear Technology Corporation
    Inventor: Min-Ru Lee