Patents by Inventor Leslie L. Szepesi

Leslie L. Szepesi 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).

  • Alternating current amplifier with digitally controlled frequency response
    Patent number: 4868516
    Abstract: An improved alternating current amplifier employs capacitive feedback to balance the intrinsic input capacitance, and a multiplier circuit responsive to a digital control signal coupled in the feedback path to vary the effective capacitance of the capacitive feedback. Thus, the frequency response of the amplifier may be adjusted and set digitally, such as under computer control, obviating the need to make manual adjustments to improve amplifier performance.
    Type: Grant
    Filed: April 14, 1988
    Date of Patent: September 19, 1989
    Assignee: John Fluke Mfg. Co., Inc.
    Inventors: Robert M. Henderson, Leslie L. Szepesi