Patents by Inventor Daniel Kustera

Daniel Kustera 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).

  • AC current sensor having high accuracy and large bandwidth
    Patent number: 6094044
    Abstract: A method and apparatus for processing in output of an inductive sensor, including integrating the output of the inductive sensor with an integrator, having a transfer function with at least two zeros, and at least three poles having characteristic frequencies above the zeros, having a greater number of said poles than said zeros, wherein an integration is performed at frequencies above the characteristic frequencies of the poles, and low frequency noise is substantially rejected at frequencies below the poles. The inductive sensor may be, for example, a Rogowski coil.
    Type: Grant
    Filed: May 7, 1999
    Date of Patent: July 25, 2000
    Assignee: Airpax Corporation, LLC
    Inventors: Daniel Kustera, Shaun Goodwin
  • Low noise sinusoidal controller for pulse width modulated converters
    Patent number: 5642274
    Abstract: A controller for supplying a switching signal to a switched mode power supply, includes a sinusoidal-like wave generator, and circuitry for selectively shifting a dc level in the sinusoidal-like wave whereby a duty cycle of the sinusoidal-like wave at a predetermined threshold level, corresponding to a turn-on level of a power switch in the switched mode power supply, is effectively controlled.
    Type: Grant
    Filed: July 26, 1994
    Date of Patent: June 24, 1997
    Assignee: U.S. Philips Corporation
    Inventors: Joseph G. Zahnen, William S. Burdick, Daniel Kustera, Dhaval B. Dalal, Rui Liu, Paulo Caldeira