Patents by Inventor Joseph J. Pleitz

Joseph J. Pleitz 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).

  • Driver for N-channel VFET output stage of power amplifier
    Patent number: 5783970
    Abstract: An input driver stage for an audio power amplifier wherein the amplifier incorporates only N-channel VFETs in the output stage, the invention locks the currents in second stage (via a closed loop) which is directly connected to the VFET output stage thus allowing precise open loop predictive temperature compensated programming of the quiescent operating point of the VFET output stage into an acceptable linear area of operation--without fettering the amplifiers inherent straight forwardness of implementation or the amplifiers excellent signal amplification characteristics.
    Type: Grant
    Filed: October 25, 1996
    Date of Patent: July 21, 1998
    Assignee: Mitek Corporation
    Inventor: Joseph J. Pleitz