Patents by Inventor Leslie H. Whatley

Leslie H. Whatley 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).

  • Sinusoidal current sense and scaling circuit
    Patent number: 4928059
    Abstract: A circuit for providing a scaled sinusoidal voltage proportional to a sinusoidal current referenced to a first reference potential. The scaled sinusoidal voltage is referenced to a second reference potential. A scaling resistor is connected between an operational amplifier inverting input terminal and the operational amplifier output terminal. A transformer has a primary winding in series with the sinusoidal current. A secondary winding has a first terminal coupled to the second reference potential and a second terminal coupled to the operational amplifier inverting input terminal. An integrator has an inverting input terminal coupled to the operational amplifier output terminal, a noninverting input terminal coupled to the second reference potential and an output terminal coupled to the operational amplifier noninverting input terminal.
    Type: Grant
    Filed: May 1, 1989
    Date of Patent: May 22, 1990
    Assignee: Rockwell International Corporation
    Inventors: Hugh L. Franklin, Leslie H. Whatley, George N. Klees