Patents by Inventor Marko Vulovic
Marko Vulovic 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).
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Publication number: 20220352822Abstract: A switching converter has a first converter output for connection to a user load and a second converter output for connection to the user load. A first direct current rail power negative terminal has a first positive output and a first negative output connected to the second converter output. A second direct current rail power negative terminal has a second negative output and a second positive output connected to the first positive output. A first switch has a first positive terminal connected to the first positive output, a first negative terminal and a first control terminal. A second switch has a second positive terminal connected to the first negative terminal, a second negative terminal connected to the second negative output, and a second control terminal. A pulse width modulator has a first modulator output connected to the first control terminal, and a second modulator output connected to the second control terminal.Type: ApplicationFiled: May 1, 2021Publication date: November 3, 2022Inventors: Peyman Safa, Marko Vulovic
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Patent number: 11469675Abstract: A switching converter has a first converter output for connection to a user load and a second converter output for connection to the user load. A first direct current rail power negative terminal has a first positive output and a first negative output connected to the second converter output. A second direct current rail power negative terminal has a second negative output and a second positive output connected to the first positive output. A first switch has a first positive terminal connected to the first positive output, a first negative terminal and a first control terminal. A second switch has a second positive terminal connected to the first negative terminal, a second negative terminal connected to the second negative output, and a second control terminal. A pulse width modulator has a first modulator output connected to the first control terminal, and a second modulator output connected to the second control terminal.Type: GrantFiled: May 1, 2021Date of Patent: October 11, 2022Assignee: Keysight Technologies, Inc.Inventors: Peyman Safa, Marko Vulovic
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Patent number: 10330715Abstract: In accordance with one illustrative embodiment, a system for determining a self-discharge current characteristic of a storage cell (or a bank of storage cells) includes a voltage source, first and second voltage measurement circuits, a current measurement circuit, and a processor. The voltage source provides a potentiostat voltage to the storage cell coupled to the system. The first voltage measurement circuit provides a first voltage resolution for measuring an open circuit voltage across a pair of terminals of the storage cell. The second voltage measurement circuit provides a second voltage resolution that is significantly higher than the first voltage resolution for measuring a terminal voltage at one of the pair of terminals of the storage cell. The processor executes a test procedure by using the voltage source, the first and second voltage measurement circuits, and the current measurement circuit, to determine the self-discharge leakage current characteristic of the storage cell.Type: GrantFiled: December 11, 2016Date of Patent: June 25, 2019Assignee: Keysight Technologies, Inc.Inventors: Edward Brorein, Marko Vulovic, Bryan Boswell, Robert Zollo
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Publication number: 20180164363Abstract: In accordance with one illustrative embodiment, a system for determining a self-discharge current characteristic of a storage cell (or a bank of storage cells) includes a voltage source, first and second voltage measurement circuits, a current measurement circuit, and a processor. The voltage source provides a potentiostat voltage to the storage cell coupled to the system. The first voltage measurement circuit provides a first voltage resolution for measuring an open circuit voltage across a pair of terminals of the storage cell. The second voltage measurement circuit provides a second voltage resolution that is significantly higher than the first voltage resolution for measuring a terminal voltage at one of the pair of terminals of the storage cell. The processor executes a test procedure by using the voltage source, the first and second voltage measurement circuits, and the current measurement circuit, to determine the self-discharge leakage current characteristic of the storage cell.Type: ApplicationFiled: December 11, 2016Publication date: June 14, 2018Inventors: Edward Brorein, Marko Vulovic, Bryan Boswell, Robert Zollo
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Patent number: 9297846Abstract: Disclosed is a continuous broken sense lead detection system (“CBSLDS”) for use with a Kelvin-connected device under test (“DUT”), a power source, and detection system stimulus configured to provide a periodic stimulus voltage. The CBSLDS is configured to detect a discontinuity in a first sense lead, second sense lead, or both, that are in signal communication with the DUT. The CBSLDS includes a first transformer, second transformer, first DC-blocker, second DC-blocker, first detection module, and second detection module.Type: GrantFiled: December 1, 2012Date of Patent: March 29, 2016Assignee: Keysight Technologies, Inc.Inventor: Marko Vulovic
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Patent number: 8964437Abstract: An energy dissipating device configured to connect to a power supply and to dissipate excess energy from a direct current (DC) rail in response to a change in power supply settings or operating characteristics. The energy dissipating device is connected to the DC rail, which conducts current generated by an AC/DC converter to at least one DC/DC converter. When power demand to the DC/DC converter is reduced, the DC/DC converter generates a supplemental current surge on the DC rail. A rail current monitor monitors the current level on the DC rail and generates the DC rail power signal indicative of the supplemental current surge level generated by the at least one DC/DC converter. The supplemental surge current is used to control dissipative elements connected across the DC rail to modulate a current sink path across the DC rail to dissipate the excess energy from the DC rail.Type: GrantFiled: January 15, 2013Date of Patent: February 24, 2015Assignee: Keysight Technologies, Inc.Inventors: Peyman Safa, Michael J. Benes, Marko Vulovic
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Patent number: 8892791Abstract: An apparatus and method for synchronous communications using a serial data stream employs a housing with a controller and a back plane. The housing accepts one or more modules for interconnection with the back plane. The back plane distributes power to the modules and provides a communication link from the controller to each module. Each communication link includes a data out line, a data in line and a clock line, where each clock line is derived from one clock source.Type: GrantFiled: October 17, 2007Date of Patent: November 18, 2014Assignee: Keysight Technologies, Inc.Inventors: James P. McKim, Jr., John W. Hyde, Marko Vulovic, Buck H. Chan, John F. Kenny, Richard A. Carlson
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Publication number: 20140198549Abstract: An energy dissipating device configured to connect to a power supply and to dissipate excess energy from a direct current (DC) rail in response to a change in power supply settings or operating characteristics. The energy dissipating device is connected to the DC rail, which conducts current generated by an AC/DC converter to at least one DC/DC converter. When power demand to the DC/DC converter is reduced, the DC/DC converter generates a supplemental current surge on the DC rail. A rail current monitor monitors the current level on the DC rail and generates the DC rail power signal indicative of the supplemental current surge level generated by the at least one DC/DC converter. The supplemental surge current is used to control dissipative elements connected across the DC rail to modulate a current sink path across the DC rail to dissipate the excess energy from the DC rail.Type: ApplicationFiled: January 15, 2013Publication date: July 17, 2014Applicant: AGILENT TECHNOLOGIES, INC.Inventors: PEYMAN SAFA, MICHAEL J. BENES, MARKO VULOVIC
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Publication number: 20140152335Abstract: Disclosed is a continuous broken sense lead detection system (“CBSLDS”) for use with a Kelvin-connected device under test (“DUT”), a power source, and detection system stimulus configured to provide a periodic stimulus voltage. The CBSLDS is configured to detect a discontinuity in a first sense lead, second sense lead, or both, that are in signal communication with the DUT. The CBSLDS includes a first transformer, second transformer, first DC-blocker, second DC-blocker, first detection module, and second detection module.Type: ApplicationFiled: December 1, 2012Publication date: June 5, 2014Applicant: AGILENT TECHNOLOGIES, INC.Inventor: Marko Vulovic
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Patent number: 8354834Abstract: In one embodiment, a measurement apparatus has an input stage, an output stage and a multiplexer. The input stage has a signal input, a plurality of measurement range outputs, and a plurality of selectable gain stages, with each of the selectable gain stages being coupled between the signal input and a respective one of the measurement range outputs. The output stage has a measurement acquisition path between an analog measurement input and a digital measurement output. The measurement acquisition path includes an analog-to-digital converter. The multiplexer has i) a plurality of data inputs, at least two of which are coupled to respective ones of the plurality of measurement range outputs, and at least one of which is a reference input configured to receive a signal to which signals appearing at the measurement range outputs are commonly referenced, ii) a data output coupled to the analog measurement input of the output stage, and iii) a control input.Type: GrantFiled: June 26, 2009Date of Patent: January 15, 2013Assignee: Agilent Technologies, Inc.Inventors: Benjamin D. Hoover, Marko Vulovic, Peyman Safa
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Patent number: 8143880Abstract: An electrical current measurement system. A sense impedance and a composite amplifier are in electrical communication and together define a trans-impedance circuit that presents a frequency-compensated impedance lower than the sense impedance to an input electrical current to be measured. A sense amplifier in electrical communication with the sense impedance provides an output indicative of a magnitude of the input electrical current. A current bypass circuit may parallel the trans-impedance circuit and bypass the input electrical current around the trans-impedance circuit when the current reaches a predefined magnitude. The system may be combined with another current sensor to form a dual-range current measurement instrument.Type: GrantFiled: July 31, 2009Date of Patent: March 27, 2012Assignee: Agilent Technologies, Inc.Inventors: Marko Vulovic, Peyman Safa, Benjamin D. Hoover, Daniel R. Schwartz
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Patent number: 8115474Abstract: An electrical current measurement system. A first low-range current gauge receives a current to be measured and provides a first intermediate value indicative of the amplitude of the current up to a first maximum current. A second low-range current gauge receives any portion of the current having a magnitude that exceeds the first maximum current and provides a second preliminary value indicative of the amplitude of the portion of the current having a magnitude that exceeds the first maximum current up to a second maximum current. An arithmetic unit or a digital processor receives the first intermediate value and the second preliminary value and provides a second intermediate value indicative of the amplitude of the current. A full-range current gauge may also be provided. A selector or the digital processor selects one of the values for display or other output.Type: GrantFiled: November 6, 2009Date of Patent: February 14, 2012Assignee: Agilent Technologies, Inc.Inventors: Marko Vulovic, Peyman Safa, Daniel R. Schwartz, Benjamin D. Hoover
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Publication number: 20110109300Abstract: An electrical current measurement system. A first low-range current gauge receives a current to be measured and provides a first intermediate value indicative of the amplitude of the current up to a first maximum current. A second low-range current gauge receives any portion of the current having a magnitude that exceeds the first maximum current and provides a second preliminary value indicative of the amplitude of the portion of the current having a magnitude that exceeds the first maximum current up to a second maximum current. An arithmetic unit or a digital processor receives the first intermediate value and the second preliminary value and provides a second intermediate value indicative of the amplitude of the current. A full-range current gauge may also be provided. A selector or the digital processor selects one of the values for display or other output.Type: ApplicationFiled: November 6, 2009Publication date: May 12, 2011Inventors: Marko Vulovic, Benjamin D. Hoover, Daniel R. Schwartz
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Publication number: 20110025299Abstract: An electrical current measurement system. A sense impedance and a composite amplifier are in electrical communication and together define a trans-impedance circuit that presents a frequency-compensated impedance lower than the sense impedance to an input electrical current to be measured. A sense amplifier in electrical communication with the sense impedance provides an output indicative of a magnitude of the input electrical current. A current bypass circuit may parallel the trans-impedance circuit and bypass the input electrical current around the trans-impedance circuit when the current reaches a predefined magnitude. The system may be combined with another current sensor to form a dual-range current measurement instrument.Type: ApplicationFiled: July 31, 2009Publication date: February 3, 2011Inventors: Marko Vulovic, Peyman Safa, Benjamin D. Hoover, Daniel R. Schwartz
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Publication number: 20100327850Abstract: In one embodiment, a measurement apparatus has an input stage, an output stage and a multiplexer. The input stage has a signal input, a plurality of measurement range outputs, and a plurality of selectable gain stages, with each of the selectable gain stages being coupled between the signal input and a respective one of the measurement range outputs. The output stage has a measurement acquisition path between an analog measurement input and a digital measurement output. The measurement acquisition path includes an analog-to-digital converter. The multiplexer has i) a plurality of data inputs, at least two of which are coupled to respective ones of the plurality of measurement range outputs, and at least one of which is a reference input configured to receive a signal to which signals appearing at the measurement range outputs are commonly referenced, ii) a data output coupled to the analog measurement input of the output stage, and iii) a control input.Type: ApplicationFiled: June 26, 2009Publication date: December 30, 2010Inventors: Benjamin D. Hoover, Marko Vulovic, Peyman Safa
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Patent number: 7668975Abstract: An apparatus and method for synchronous communications using a serial data stream employs a housing with a controller and a back plane. The housing accepts one or more modules for interconnection with the back plane. The back plane distributes power to the modules and provides a communication link from the controller to each module. Each communication link includes a data out line, a data in line and a clock line, where each clock line is derived from one clock source.Type: GrantFiled: June 26, 2007Date of Patent: February 23, 2010Assignee: Agilent Technologies, Inc.Inventors: James B. McKim, Jr., John W. Hyde, Marko Vulovic, Buck H. Chan, John F. Kenny, Richard A. Carlson
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Publication number: 20080201503Abstract: An apparatus and method for synchronous communications using a serial data stream employs a housing with a controller and a back plane. The housing accepts one or more modules for interconnection with the back plane. The back plane distributes power to the modules and provides a communication link from the controller to each module. Each communication link includes a data out line, a data in line and a clock line, where each clock line is derived from one clock source.Type: ApplicationFiled: October 17, 2007Publication date: August 21, 2008Inventors: James B. McKim, John W. Hyde, Marko Vulovic, Buck H. Chan, John F. Kenny, Richard A. Carlson
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Publication number: 20080163000Abstract: An apparatus and method for synchronous communications using a serial data stream employs a housing with a controller and a back plane. The housing accepts one or more modules for interconnection with the back plane. The back plane distributes power to the modules and provides a communication link from the controller to each module. Each communication link includes a data out line, a data in line and a clock line, where each clock line is derived from one clock source.Type: ApplicationFiled: October 17, 2007Publication date: July 3, 2008Inventors: James P. McKim, John W. Hyde, Marko Vulovic, Buck H. Chan, John F. Kenny, Richard A. Carlson
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Publication number: 20080022165Abstract: An apparatus and method for synchronous communications using a serial data stream employs a housing with a controller and a back plane. The housing accepts one or more modules for interconnection with the back plane. The back plane distributes power to the modules and provides a communication link from the controller to each module. Each communication link includes a data out line, a data in line and a clock line, where each clock line is derived from one clock source.Type: ApplicationFiled: June 26, 2007Publication date: January 24, 2008Inventors: James McKim, John Hyde, Marko Vulovic, Buck Chan, John Kenny, Richard Carlson
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Patent number: 7302282Abstract: An apparatus and method for synchronous communications using a serial data stream employs a housing with a controller and a back plane. The housing accepts one or more modules for interconnection with the back plane. The back plane distributes power to the modules and provides a communication link from the controller to each module. Each communication link includes a data out line, a data in line and a clock line, where each clock line is derived from one clock source.Type: GrantFiled: May 28, 2004Date of Patent: November 27, 2007Assignee: Agilent Technologies, Inc.Inventors: James B. McKim, Jr., John W. Hyde, Marko Vulovic, Buck H. Chan, John F. Kenny, Richard A. Carlson