Patents by Inventor Brian J. Hruby

Brian J. Hruby 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).

  • Testing protection schemes of a power converter
    Patent number: 8742778
    Abstract: A system for testing the existing protection schemes of a power converter. The system simulates the voltage regulator producing a voltage level below an under-voltage threshold. The system simulates the voltage regulator producing a voltage level above an over-voltage threshold. The system simulates a short in the power converter pulling down the input bus. The system simulates a short in the power converter pulling down the output bus. The system measures the system responses to these simulations against responses of a properly operating system and determines if the power converter's protection schemes are operating correctly.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: June 3, 2014
    Assignee: International Business Machines Corporation
    Inventors: Patrick K. Egan, Brian J. Hruby, Michael L. Miller
  • TESTING PROTECTION SCHEMES OF A POWER CONVERTER
    Publication number: 20130181729
    Abstract: A system for testing the existing protection schemes of a power converter. The system simulates the voltage regulator producing a voltage level below an under-voltage threshold. The system simulates the voltage regulator producing a voltage level above an over-voltage threshold. The system simulates a short in the power converter pulling down the input bus. The system simulates a short in the power converter pulling down the output bus. The system measures the system responses to these simulations against responses of a properly operating system and determines if the power converter's protection schemes are operating correctly.
    Type: Application
    Filed: January 18, 2012
    Publication date: July 18, 2013
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Patrick K. Egan, Brian J. Hruby, Michael L. Miller
  • Active impendance current-share method
    Patent number: 7282899
    Abstract: Exemplary embodiments include An active impedance current-sharing circuit including: a power supply in electrical communication with a current sense resistor; a differential amplifier in electrical communication with the current sense resistor; a gate adjust amplifier in electrical communication with the differential amplifier; an ORing MOSFET in electrical communication with the gate adjust amplifier and the current sense resistor; a current share resistor in electrical communication with a current share bus and the gate adjust amplifier; and a current share output in electrical communication with the ORing MOSFET, wherein the circuit allows two or more power supplies that are not designed for current share to be connected in parallel and current share by actively modulating the ORing MOSFET between its linear and fully enhanced regions.
    Type: Grant
    Filed: June 9, 2006
    Date of Patent: October 16, 2007
    Assignee: International Business Machines Corporation
    Inventors: Timothy C. Daun-Lindberg, Brian J. Hruby