Patents by Inventor Christopher Allen Riggio

Christopher Allen Riggio 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).

  • Patent number: 6952355
    Abstract: The use of low permeability magnetic material (NSME) with the disclosed design strategies form a two-stage isolated output converter system with the distinct advantages of superior density, efficiency, thermal operating bandwidth, service life, transient survival, and form factor flexibility over the prior art. These improvements are realized by, optimized application of NSME, efficient rectifying flyback management techniques, inclusion of switching buffers that substantially reduce switching losses. The instant invention provides power factor correction, output regulation, inrush limiting, over voltage, over current, over temperature, and transient protection, multi-converter load sharing, hot swapability, and fault signals. The disclosed system is designed, specified, and certified to function from ?40 deg. C. to +65 deg. C. from a 180 vac to 264 vac 50/60 Hz input line and supports 1000 watts of output or 600 watts from 90 vac to 120 vac 50/60 Hz line input at greater then 0.
    Type: Grant
    Filed: July 22, 2002
    Date of Patent: October 4, 2005
    Assignee: OPS Power LLC
    Inventors: Christopher Allen Riggio, Jeffrey Michael Buske, David R. Thompson, Lyle J. Stahle, Nathan J. Hunter, Garth Blair Woodland
  • Publication number: 20040012986
    Abstract: The use of low permeability magnetic material (NSME) with the disclosed design strategies form a two-stage isolated output converter system with the distinct advantages of superior density, efficiency, thermal operating bandwidth, service life, transient survival, and form factor flexibility over the prior art. These improvements are realized by, optimized application of NSME, efficient rectifying flyback management techniques, inclusion of switching buffers that substantially reduce switching losses. The instant invention provides power factor correction, output regulation, inrush limiting, over voltage, over current, over temperature, and transient protection, multi-converter load sharing, hot swapability, and fault signals.
    Type: Application
    Filed: July 22, 2002
    Publication date: January 22, 2004
    Inventors: Christopher Allen Riggio, Jeffrey Michael Buske, David R. Thompson, Lyle J. Stahle, Nathan J. Hunter, Garth Blair Woodland
  • Patent number: 6567281
    Abstract: Single, multistage, and distributed magnetic switched and tank resonant power conversion systems utilizing NSME. The NSME provide, superior protection to conducted lightning transients, superior thermal operating bandwidth, higher magnetizing efficiency, greater flux/power density potential and form factor flexibility when implemented with the disclosed circuit strategies. Output voltage is maintained substantially constant and ripple free in the presence of line and load variations by the action of various feedback strategies. These mechanisms combine to produce compensations by controlling the duration and/or frequency of a switch or switches. A novel function generator implementation supplies a signal, which is a function of magnetic flux tracking, AC line phasing, and output voltage feedback to provide output regulation, active ripple rejection, and power factor correction to the AC line. Efficient energy storage and transfer is achieved by the optimized application of NSME.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: May 20, 2003
    Assignee: Online Power Supply, Inc.
    Inventors: Christopher Allen Riggio, Garth Blair Woodland
  • Patent number: 6507501
    Abstract: Single, multistage, and distributed magnetic switched and tank resonant power conversion systems use a non saturating magnetic element (NSME). The NSME provide superior protection to conducted lightning transients, superior thermal operating bandwidth, higher magnetizing efficiency, greater flux/power density potential and form factor flexibility when implemented with the disclosed circuit strategies. Output voltage is maintained substantially constant and ripple free in the presence of line and load variations by the action of various feedback strategies. These mechanisms combine to produce compensations by controlling the duration and/or frequency of a switch or switches. A novel function generator implementation supplies a signal which is a function of magnetic flux tracking, AC line phasing, and output voltage feedback to provide output regulation, active ripple rejection, and power factor correction to the AC line.
    Type: Grant
    Filed: August 6, 2001
    Date of Patent: January 14, 2003
    Assignee: Online Power Supply, Inc.
    Inventors: Christopher Allen Riggio, Garth Blair Woodland
  • Patent number: 6504423
    Abstract: A drive with a high impedance input, low impedance output is created. When a switching or driving action requiring the sourcing and sinking of current from a common node in a wide frequency range is desired, the invention allows the creation of a simple, efficient, two switch drive system that functions across a wide range of conditions. The circuit uses a discrete N-Channel FET paired with discrete PNP transistors. A high impedance input node is formed by connecting the FET gate to the transistor base. The differential threshold voltage that exists between the FET gate and the transistor base prevents the two devices from generating conflicting currents at the output node formed by the common source emitter. The circuit further lends itself to output waveform variations as may be required for various drive strategies by manipulating the input signal processing to custom modify the resulting output voltage and current.
    Type: Grant
    Filed: March 11, 2002
    Date of Patent: January 7, 2003
    Assignee: Online Power Supply, Inc.
    Inventors: Christopher Allen Riggio, Garth Blair Woodland
  • Publication number: 20030002303
    Abstract: A drive with a high impedance input, low impedance output is created. When a switching or driving action requiring the sourcing and sinking of current from a common node in a wide frequency range is desired, the invention allows the creation of a simple, efficient, two switch drive system that functions across a wide range of conditions. The circuit uses a discrete N-Channel FET paired with discrete PNP transistors. A high impedance input node is formed by connecting the FET gate to the transistor base. The differential threshold voltage that exists between the FET gate and the transistor base prevents the two devices from generating conflicting currents at the output node formed by the common source emitter. The circuit further lends itself to output waveform variations as may be required for various drive strategies by manipulating the input signal processing to custom modify the resulting output voltage and current.
    Type: Application
    Filed: March 15, 2002
    Publication date: January 2, 2003
    Inventors: Christopher Allen Riggio, Garth Blair Woodland
  • Patent number: 6493242
    Abstract: A drive with a high impedance input, low impedance output is created. When a switching or driving action requiring the sourcing and sinking of current from a common node in a wide frequency range is desired, the invention allows the creation of a simple, efficient, two switch drive system that functions across a wide range of conditions. The circuit uses a discrete N-Channel FET paired with discrete PNP transistors. A high impedance input node is formed by connecting the FET gate to the transistor base. The differential threshold voltage that exists between the FET gate and the transistor base prevents the two devices from generating conflicting currents at the output node formed by the common source emitter. The circuit further lends itself to output waveform variations as may be required for various drive strategies by manipulating the input signal processing to custom modify the resulting output voltage and current.
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: December 10, 2002
    Assignee: Online Power Supply, Inc.
    Inventors: Christopher Allen Riggio, Garth Blair Woodland
  • Publication number: 20020181250
    Abstract: A drive with a high impedance input, low impedance output is created. When a switching or driving action requiring the sourcing and sinking of current from a common node in a wide frequency range is desired, the invention allows the creation of a simple, efficient, two switch drive system that functions across a wide range of conditions. The circuit uses a discrete N-Channel FET paired with discrete PNP transistors. A high impedance input node is formed by connecting the FET gate to the transistor base. The differential threshold voltage that exists between the FET gate and the transistor base prevents the two devices from generating conflicting currents at the output node formed by the common source emitter. The circuit further lends itself to output waveform variations as may be required for various drive strategies by manipulating the input signal processing to custom modify the resulting output voltage and current.
    Type: Application
    Filed: March 11, 2002
    Publication date: December 5, 2002
    Inventors: Christopher Allen Riggio, Garth Blair Woodland
  • Publication number: 20020176263
    Abstract: Single, multistage, and distributed magnetic switched and tank resonant power conversion systems can use a transformer with a magnetic element operating in a non-saturated region (NSME). The NSME provides superior protection to conducted lightning transients, superior thermal operating bandwidth, higher magnetizing efficiency, greater flux/power density potential and form factor flexibility when implemented with many circuit strategies, some of which are disclosed herein. Efficient energy storage and transfer is achieved by the optimized application of NSME. The use of efficient rectifying flyback management techniques protects switches and provides additional output. The preferred embodiment teaches against common theories of transformers and uses a NSME in the core.
    Type: Application
    Filed: March 11, 2002
    Publication date: November 28, 2002
    Inventors: Christopher Allen Riggio, Garth Blair Woodland
  • Publication number: 20020172056
    Abstract: Single, multistage, and distributed magnetic switched and tank resonant power conversion systems utilizing NSME. The NSME provide, superior protection to conducted lightning transients, superior thermal operating bandwidth, higher magnetizing efficiency, greater flux/power density potential and form factor flexibility when implemented with the disclosed circuit strategies. Output voltage is maintained substantially constant and ripple free in the presence of line and load variations by the action of various feedback strategies. These mechanisms combine to produce compensations by controlling the duration and/or frequency of a switch or switches. A novel function generator implementation supplies a signal, which is a function of magnetic flux tracking, AC line phasing, and output voltage feedback to provide output regulation, active ripple rejection, and power factor correction to the AC line. Efficient energy storage and transfer is achieved by the optimized application of NSME.
    Type: Application
    Filed: March 18, 2002
    Publication date: November 21, 2002
    Inventors: Christopher Allen Riggio, Garth Blair Woodland
  • Publication number: 20020039298
    Abstract: Single, multistage, and distributed magnetic switched and tank resonant power conversion systems use a non saturating magnetic element (NSME). The NSME provide superior protection to conducted lightning transients, superior thermal operating bandwidth, higher magnetizing efficiency, greater flux/power density potential and form factor flexibility when implemented with the disclosed circuit strategies. Output voltage is maintained substantially constant and ripple free in the presence of line and load variations by the action of various feedback strategies. These mechanisms combine to produce compensations by controlling the duration and/or frequency of a switch or switches. A novel function generator implementation supplies a signal which is a function of magnetic flux tracking, AC line phasing, and output voltage feedback to provide output regulation, active ripple rejection, and power factor correction to the AC line.
    Type: Application
    Filed: August 6, 2001
    Publication date: April 4, 2002
    Inventors: Christopher Allen Riggio, Garth Blair Woodland
  • Patent number: 6272025
    Abstract: Single, multistage, and distributed magnetic switched and tank resonant power conversion systems utilizing NSME. The NSME provide, superior protection to conducted lightning transients, superior thermal operating bandwidth, higher magnetizing efficiency, greater flux/power density potential and form factor flexibility when implemented with the disclosed circuit strategies. Output voltage is maintained substantially constant and ripple free in the presence of line and load variations by the action of various feedback strategies. These mechanisms combine to produce compensations by controlling the duration and/or frequency of a switch or switches. A novel function generator implementation supplies a signal, which is a function of magnetic flux tracking, AC line phasing, and output voltage feedback to provide output regulation, active ripple rejection, and power factor correction to the AC line. Efficient energy storage and transfer is achieved by the optimized application of NSME.
    Type: Grant
    Filed: October 1, 1999
    Date of Patent: August 7, 2001
    Assignee: Online Power Supply, Inc.
    Inventors: Christopher Allen Riggio, Garth Blair Woodland