Patents by Inventor Gary Charles Vance

Gary Charles Vance 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).

  • Amplifier circuit having a floating input stage
    Patent number: 3988690
    Abstract: An input amplifier stage is isolated from the main body of an amplifier and instrument ground by a single transformer which provides both an energy path to the input stage and an amplifier signal path from the input stage using a modulated load technique. The secondary of the transformer, which is connected across the input amplifier, includes a rectifier and filtering components to provide a floating D. C. voltage supply.
    Type: Grant
    Filed: October 4, 1973
    Date of Patent: October 26, 1976
    Assignee: Tektronix, Inc.
    Inventors: Gary Charles Vance, Richard James Ballard