Load Shunting By Fault Responsive Means (e.g., Crowbar Circuit) Patents (Class 361/54)
  • Patent number: 10289182
    Abstract: A power conditioning circuit includes at least one power storage device having electrodes coupled for receiving power from a DC power source. At least one active current limit (ACL) circuit coupled to the electrodes of the power storage device is for limiting a maximum power output from the power storage device under fault conditions. A DC-to-DC converter has its inputs coupled to the ACL circuit. At least one crowbar circuit has a first terminal and a second terminal and a shorting device coupled to an output of the DC-to-DC converter for providing output terminals for the power conditioning circuit.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: May 14, 2019
    Assignee: Honeywell International Inc.
    Inventors: Murali Krishna Bezawada, Bart Meijer, John Boettger, Suresh Babu Dtvs
  • Patent number: 10197231
    Abstract: A lighting arrangement (10) is disclosed that comprises a plurality of solid state lighting elements (22) mounted on a grid of conductive wires (12), said grid comprising a plurality of grid segments (20) each defined by respective portions of adjacent conductive wires, each grid segment comprising a pair of reinforcement members (24, 26) affixed to said portions; and at least one said solid state lighting element mounted on said portions in between the reinforcement members of at least some of the grid segments. An apparatus and method for deforming such a lighting arrangement are also disclosed.
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: February 5, 2019
    Assignee: PHILIPS LIGHTING HOLDING B.V.
    Inventors: Sébastien Paul René Libon, Johannes Wilhelmus Weekamp
  • Patent number: 10095193
    Abstract: Exemplary apparatuses and methods are provided which provide a safety system that automatically controls charge and discharge of high voltage (HV) capacitors upon application or removal of HV power to a HV system (e.g., a surveillance radar) that includes different timing and sequencing for turn-on/turn operations. In one embodiment, an apparatus and method automatically discharges high voltage (HV) capacitors when HV power is deactivated. Another aspect of an embodiment of the invention automatically deactivates a HV capacitor shunt when the HV system's main HV power is applied or activated. Additionally, an exemplary apparatus requires no human interaction when shunting the HV capacitors, increasing electrical system safety.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: October 9, 2018
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventor: George L. Irizarry
  • Patent number: 9881545
    Abstract: A light emitting diode (LED) display apparatus, including: a plurality of LED lines including a plurality of LEDs; a plurality of switches connected to respective LED lines among the plurality of LED lines; a controller configured to sequentially supply power to the plurality of LED lines by sequentially turning on and off the plurality of switches; and an LED driver configured to detect an error state of an LED from the plurality of LEDs by estimating current flowing through the plurality of LED lines, and to provide the controller with a result of the detection.
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: January 30, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Tae-hyeun Ha, Byeong-cheol Hyeon
  • Patent number: 9742184
    Abstract: A system for clearing power transmission line faults includes a sensor network configured to communicate with a transmission line and configured to detect one or more faults on the transmission line, a crowbar configured to coordinately switch first and second ends of a section of the transmission line to respective termination points, wherein the crowbar includes first and second grounding switches disposed respectively at about the first and second ends of the section of the transmission line, and a controller configured to receive information from the sensor network and configured to control the switching of the crowbar in response to the information.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: August 22, 2017
    Assignee: Deep Science, LLC
    Inventors: Roderick A. Hyde, Muriel Y. Ishikawa, Lowell L. Wood, Jr., Victoria Y. H. Wood
  • Patent number: 9502888
    Abstract: A system for clearing power transmission line faults includes a sensor network configured to communicate with a transmission line and configured to detect one or more faults on the transmission line, a crowbar configured to coordinately switch first and second ends of a section of the transmission line to respective termination points, wherein the crowbar includes first and second grounding switches disposed respectively at about the first and second ends of the section of the transmission line, and a controller configured to receive information from the sensor network and configured to control the switching of the crowbar in response to the information.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: November 22, 2016
    Assignee: Deep Science, LLC
    Inventors: Roderick A. Hyde, Muriel Y. Ishikawa, Lowell L. Wood, Jr., Victoria Y. H. Wood
  • Patent number: 9397510
    Abstract: A system comprises a battery including one or more cells, an energy source, a load, and a battery protection circuit coupled to the battery, the energy source and the load. The circuit determines if the charge of each cell is at/above a predetermined, band gap supplied threshold voltage, which results in disconnecting of the battery from the energy source. The circuit also may determine if the charge of any cell is at/below a second predetermined level, which may result in disconnecting of the battery from the load. The circuit may be radiation-hardened (e.g., via redundancy), through the use of two sets of field effect transistors, two logic gates, two groups of comparator circuits, and two relays. The circuit provides multiply redundant protection comprising: redundantly assessing the overvoltage determination; redundantly triggering battery isolation; and preventing inadvertent isolation and non-charging, occurring absent overvoltage, through redundant first and second relays.
    Type: Grant
    Filed: February 11, 2014
    Date of Patent: July 19, 2016
    Assignee: Aeroflex Plainview, Inc.
    Inventors: George Altemose, Michael Consi
  • Patent number: 9302637
    Abstract: One embodiment provides a vehicle voltage supply having a vehicle battery, a load with two voltage supply connections, a fuse in a path between the vehicle battery and one of the voltage supply connections of the load, and a clamping circuit transistor. The clamping circuit transistor can be switched in such a manner that the clamping circuit transistor produces a short circuit between voltage supply connections of the load in order to activate the fuse. An energy store is set up to store the energy needed to drive the clamping circuit transistor when producing the short circuit, and a charging circuit is set up to charge the energy store at least during the time in which the clamping circuit transistor does not produce a short circuit.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: April 5, 2016
    Assignee: Infineon Technologies AG
    Inventors: Alfons Graf, Wolfgang Troeger
  • Patent number: 9224702
    Abstract: A three-dimension (3D) integrated circuit (IC) package is disclosed. The 3D IC package has a package substrate having a surface. At least one integrated circuit (IC) chip with or without suppressing a transient voltage and at least one transient voltage suppressor (TVS) chip are arranged on the surface of the substrate and electrically connected with each other. The IC chip is independent from the TVS chip. The IC chip and the TVS chip stacked on each other are arranged on the package substrate. Alternatively, the IC chip and the TVS chip are together arranged on an interposer formed on the package substrate.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: December 29, 2015
    Assignee: Amazing Microelectronic Corp.
    Inventors: Ming-Dou Ker, Che-Hao Chuang
  • Patent number: 9178351
    Abstract: A system for clearing power transmission line faults includes a sensor network configured to communicate with a transmission line and configured to detect one or more faults on the transmission line, a crowbar configured to coordinately switch first and second ends of a section of the transmission line to respective termination points, wherein the crowbar includes first and second grounding switches disposed respectively at about the first and second ends of the section of the transmission line, and a controller configured to receive information from the sensor network and configured to control the switching of the crowbar in response to the information.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: November 3, 2015
    Assignee: The Invention Science Fund I, LLC
    Inventors: Roderick A. Hyde, Muriel Y. Ishikawa, Lowell L. Wood, Jr., Victoria Y. H. Wood
  • Patent number: 9093831
    Abstract: An electrical wiring system/method implementing transient voltage suppression is disclosed. The system/method incorporates HOT, NEUTRAL, GROUND wiring in conjunction with a series drop resistor (SDR) on the HOT conductor that supplies current to the load device. Parallel shunting metal oxide varistors (MOVs) are used in conjunction with corresponding shunt diode rectifiers (SDRs) to suppress transients on the HOT conductor to either the GROUND conductor and/or NEUTRAL conductor. The parallel shunting MOV/SDR pairs may be integrated into a singular structure that is encapsulated in an insulating material to permit implementation of the transient protection wiring system/method into electrical loads and common power distribution equipment such as electrical outlets and power strips.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: July 28, 2015
    Assignee: 4GID HOLDCO LLC
    Inventor: Mark E. Goodson
  • Patent number: 9083174
    Abstract: The object of the invention is a thermal overload protection device (22) for protecting an electric component (10), in particular an electronic component, wherein the overload protection device (22) has a short-circuit unit (24) for short-circuiting connections (12, 14) of the component (10), and an actuating member (26) actuating the short-circuit unit (24) in a temperature sensitive manner. According to the invention it is provided that the short-circuit unit (24) is attached to a circuit path support (16) in at least one area (28), and is supported in at least another area (30) on the component (10) disposed on the circuit path support (16) via the actuating unit (26), and/or at least one of the circuit paths (18, 20) contacting one of the connections (12, 14) to be short-circuited. The invention further relates to a respective arrangement (36) having a circuit path support (16), at least one component (10) disposed thereupon, and at least one assigned overload protection device (22).
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: July 14, 2015
    Assignee: PHOENIX CONTACT GMBH & CO. KG
    Inventors: Thomas Meyer, Steffen Pförtner, Friedrich-Eckhard Brand, Bernd Pötzsch
  • Patent number: 8993916
    Abstract: Equipment protection systems, arc containment devices, and methods of assembling arc containment devices are disclosed. In one example, an electrical isolation structure includes a conductor base, a cover coupled to the conductor base and defining an isolation chamber, a containment shield disposed on the conductor base within the isolation chamber, and a biasing assembly positioned between the cover and the containment shield. The containment shield defines a containment chamber configured to enclose the plurality of electrode assemblies. The containment shield is configured to at least partially contain the arc products within the containment chamber. The biasing assembly is configured to permit the containment shield to move away from the conductor base to thereby define a gap between the conductor base and the containment shield to enable at least some of the arc gases to vent from the containment chamber.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: March 31, 2015
    Assignee: General Electric Company
    Inventors: Srinivas Naga Palvadi, Ravi Kumar, Chandrakanth Gopularam
  • Patent number: 8988234
    Abstract: An alarm system for alarming whenever there is a power leakage from an electronic device, includes a voltage decreasing circuit, a switch circuit and an alarm circuit. The voltage decreasing circuit receives a first voltage from a live wire output terminal and outputs a second voltage. The switch circuit outputs a control signal when the power leakage is detected. The switch circuit is electrically connected to a connection port. The connection port is electrically connected to the live wire output terminal and a neutral wire output terminal. The alarm circuit receives the control signal and alarms. If there is power leakage from the electronic device, the first voltage from the live wire input terminal flows into the ground wire input terminal via the electronic device; the switch circuit turns on and the alarm circuit is closed to alarm.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: March 24, 2015
    Assignee: Zhongshan Innocloud Intellectual Property Services Co., Ltd.
    Inventor: Ke-You Hu
  • Patent number: 8981248
    Abstract: A circuit protection device is provided for use with a circuit that includes at least one pair of conductors. The protection device is configured to generate an arc. The protection device includes at least a pair of electrode assemblies electrically coupled to the at least one pair of conductors and a conductor base to support the pair of electrode assemblies. The protection device includes a cover coupled to the conductor base and defining at least one isolation chamber, wherein the electrode assemblies are disposed within the isolation chamber. The protection device includes a containment shield moveably coupled to the cover. The containment shield defines a containment chamber configured to contain charged particles produced by the arc. The containment shield is operative to move relative to the cover in response to a change in pressure produced by the arc within the containment chamber.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: March 17, 2015
    Assignee: General Electric Company
    Inventors: Srinivas Naga Palvadi, Sudhakar Sambaiah Pachunoori, Ravi Kumar
  • Patent number: 8957664
    Abstract: A device and a method for detecting a crowbar circuit in a wind turbine are provided, wherein the wind turbine comprises a converter electrically connected to the crowbar circuit, and the method comprises: electrically coupling a detection module to the crowbar circuit; inputting a first control signal into the crowbar circuit, to turn on the crowbar circuit; providing a three-phase voltage signal to the crowbar circuit via the converter, wherein voltage signals in any two adjacent phases has a predetermined phase angle difference; reading the first detection signal outputted by the detection module, to determine whether the crowbar circuit is normally thrown into the wind turbine; inputting a second control signal to the crowbar circuit, to turn off the crowbar circuit; and reading again the second detection signal outputted by the detection module, to determine whether the crowbar circuit is normally cut out from the wind turbine.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: February 17, 2015
    Assignee: Delta Electronics (Shanghai) Co., Ltd.
    Inventors: Liang Cao, Li Cai, Yan-Song Lu
  • Publication number: 20150043112
    Abstract: A system for clearing power transmission line faults includes a sensor network configured to communicate with a transmission line and configured to detect one or more faults on the transmission line, a crowbar configured to coordinately switch first and second ends of a section of the transmission line to respective termination points, wherein the crowbar includes first and second grounding switches disposed respectively at about the first and second ends of the section of the transmission line, and a controller configured to receive information from the sensor network and configured to control the switching of the crowbar in response to the information.
    Type: Application
    Filed: October 23, 2014
    Publication date: February 12, 2015
    Applicant: SEARETE LLC
    Inventors: Roderick A. Hyde, Muriel Y. Ishikawa, Lowell L. Wood, JR., Victoria Y.H. Wood
  • Publication number: 20150043111
    Abstract: The invention relates to a control unit for a motor vehicle. Said control unit comprises a voltage converter which has an inlet for a direct voltage network. Said voltage converter is designed to generate a direct voltage smaller than an input voltage on the inlet for the direct voltage network and the direct voltage is emitted on the outlet side. According to the invention, the voltage converter comprises an inverter and a transformer which is connected to said inverter. Said voltage converter also comprises an inlet for a discharge signal and is designed to discharge by means of the inverter an intermediate circuit capacitor which is connected to the inlet of the direct voltage network in accordance with the discharge signal, and to reduce a working frequency of the inverter, in particular, compared to the frequency with no discharge signal.
    Type: Application
    Filed: September 26, 2012
    Publication date: February 12, 2015
    Inventors: Stefan Koch, Jian Tian, Ralf-Peter Bergmann, Stephan Mueller
  • Publication number: 20150029621
    Abstract: An arrangement for controlling the electric power transmission in a high voltage direct current, HVDC, power transmission system includes at least one HVDC transmission or distribution line for carrying direct current, DC, and the arrangement includes an apparatus connectable to the HVDC transmission or distribution line, the apparatus being arranged to control the direct current of the HVDC transmission or distribution line by introducing a DC voltage in series with the HVDC transmission or distribution line. The arrangement includes a protection device for protecting the apparatus against over-current or overvoltage occurrences. The protection device includes a bypass device connectable to the HVDC transmission or distribution line and connected in parallel with the apparatus. The bypass device is arranged to be in a non-conducting mode and arranged to be set to a conducting mode.
    Type: Application
    Filed: December 21, 2011
    Publication date: January 29, 2015
    Applicant: ABB TECHNOLOGY LTD
    Inventors: Dimitris Giannoccaro, Soubhik Auddy, Mats Hyttinen, Mukherjee Subhasish, Tomas Jonsson, Bopparaju Gopichand, Carl Heyman
  • Patent number: 8879219
    Abstract: Systems and methods for dynamically clearing faults in a power transmission line involve automatically terminating ends of a section of the power line while preserving electrical and/or physical continuity of the power line. The terminating of the ends is reversed at about voltage zero-crossings in the power line to clear a fault.
    Type: Grant
    Filed: August 15, 2013
    Date of Patent: November 4, 2014
    Assignee: The Invention Science Fund I, LLC
    Inventors: Roderick A. Hyde, Muriel Y. Ishikawa, Lowell L. Wood, Jr., Victoria Y. H. Wood
  • Publication number: 20140293491
    Abstract: An active bypass diode circuit that mitigates the hazard of arc flash events in a Photovoltaic (PV) solar power array, and a PV solar power module that utilizes a plurality of said active bypass circuits are disclosed The active bypass circuit comprises a diode, a switch in parallel with the diode, a control circuit for opening and closing the switch, a circuit for detecting arc flash events, a power management circuit, a power supply circuit, and a capacitor. When an arc flash event is detected, all the switches are closed concurrently, reducing the voltage produced by the PV string to a level that is too low the sustain the arc, and thereby terminating the arc.
    Type: Application
    Filed: March 27, 2013
    Publication date: October 2, 2014
    Applicant: SUNFIELD SEMICONDUCTOR INC.
    Inventor: Steven Andrew Robbins
  • Patent number: 8743514
    Abstract: A high voltage direct current (HVDC) power transmission system includes a cable fault ride-through system. The cable fault ride-through system is configured to ensure the HVDC power transmission system remains operational via an earth path between the power source end and the load end during a transmission cable fault, even in the absence of a neutral bus and/or dc circuit breakers.
    Type: Grant
    Filed: April 25, 2011
    Date of Patent: June 3, 2014
    Assignee: General Electric Company
    Inventors: Christof Martin Sihler, Simon Herbert Schramm, Emad Ezzat Ahmed, Gorm Sande, Rainer Hoffman
  • Patent number: 8729739
    Abstract: A circuit breaker comprising first and second JFETs, each comprising a gate, drain and source connection, the JFETs sources being operatively connected to each other to form a common-source connection and adapted to be connected to and operating to open an external circuit when the current flowing through the JFETs exceeds a predetermined threshold, the JFETs' gates, and common-source connection being operatively connected to a gate driver circuit which causes the JFETs to turn off when the predetermined threshold is exceeded; whereupon the current flows through the common-source connection into the second gate and into the gate driver circuit which causes the gate driver circuit to turn off the first and second JFETs and open the circuit breaker. Also claimed is a method of sensing an overloaded circuit comprising leading and trailing JFETs in a circuit that open the circuit and prevent current flow when a predetermined threshold is exceeded.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: May 20, 2014
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Vadim Lubomirsky, Damian Urciuoli
  • Patent number: 8711532
    Abstract: In one embodiment, an integrated circuit, and method of manufacturing thereof, is provided. The integrated circuit contains an over-voltage protection element and an over-current protection element. The integrated circuit operates to provide enhanced and efficient ESD functionality. The over-current element of the instant disclosure includes a diffusion protection layer to enhance the lifetime of the over-current element and improve functionality.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: April 29, 2014
    Assignee: NXP, B.V.
    Inventors: Olaf Pfennigstorf, Wolfgang Schnitt
  • Patent number: 8675323
    Abstract: Provided is an ESD protection circuit for CDM capable of preventing a high current from flowing and preventing breakage when a battery is connected with reverse polarity. The ESD protection circuit employs a circuit configuration in which transistor elements are interposed in series to OFF transistors (11 and 13) included in the ESD protection circuit for CDM so that parasitic diodes of the transistor elements are connected to parasitic diodes of the OFF transistors in a reverse direction.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: March 18, 2014
    Assignee: Seiko Instruments Inc.
    Inventor: Minoru Sudo
  • Publication number: 20130335867
    Abstract: An electrical overstress (EOS) protection circuit that at least partially neutralizes or compensates for undershoot and overshoot in first and second signals that are communicated using differential signaling, such as with USB communications. For an undershoot, the EOS protection circuit injects charge into pads that receive the first and second signals. For an overshoot, the EOS protection circuit drains charge from the pad that receives the second signal and injects charge into the pad that receives the first signal.
    Type: Application
    Filed: November 3, 2011
    Publication date: December 19, 2013
    Applicant: INTEL CORPORATION
    Inventor: Suhas Vishwasrao Shinde
  • Patent number: 8611057
    Abstract: An LED module for use in sign letter channel lights comprises a substrate, a reflector mounted on the substrate, an LED mounted within the reflector on the substrate and a Zener diode shunt element connected in parallel across the LED, a printed circuit board on the substrate, wherein the LED is mounted on the printed circuit board, and an insulating cover. The module may be entirely encapsulated. An LED driving protection circuit provides ground fault protection for a plurality of series connected LED modules.
    Type: Grant
    Filed: September 9, 2008
    Date of Patent: December 17, 2013
    Assignee: Inshore Holdings, LLC
    Inventors: Francis J. Parker, Robert Crawbuck, Emilian Padurariu
  • Patent number: 8587907
    Abstract: A lithium-based battery system for a vehicle includes a plurality of lithium battery cells arranged in series that provide energy to propel the vehicle. Each of the battery cells includes a first terminal, a second terminal, a plurality of lithium battery elements arranged in parallel, a plurality of disconnect switches, and a shunt switch. Each of the battery elements includes a first terminal and a second terminal. The first terminal of each of the battery elements is connected to the first terminal of the battery cell. The second terminal of each of the battery elements is connected to the second terminal of the battery cell via a corresponding one of the disconnect switches. The shunt switch is connected between the first and second terminals of the battery cell. A control module selectively opens and closes the shunt switches and the disconnect switches.
    Type: Grant
    Filed: April 6, 2012
    Date of Patent: November 19, 2013
    Assignee: Dow Kokam France SAS
    Inventor: Fabien Gaben
  • Publication number: 20130265675
    Abstract: A digital protective relay includes at least one daughter PCB having an electronic circuit which generates electromagnetic interference noise or high frequency noise; and a backplane printed circuit board having, on an upper surface thereof, a plurality of first connectors for connection with the daughter PCB, connected to the daughter PCB through the first connectors, and providing a noise discharge path along which the electromagnetic interference noise or the high frequency noise from the daughter PCB flows to an external ground.
    Type: Application
    Filed: March 26, 2013
    Publication date: October 10, 2013
    Applicant: LSIS CO., LTD.
    Inventor: Hong Seon AHN
  • Publication number: 20130250460
    Abstract: A time triggered crowbar, which is so embodied that it monitors the on-time of at least one downstream electronic component and the period of clocking and therewith the power supply in such a manner that a predetermined maximum allowable surface temperature of the at least one downstream component is not exceeded in the explosion endangered area.
    Type: Application
    Filed: August 12, 2011
    Publication date: September 26, 2013
    Applicant: Endress Hauser GmbH Co. KG
    Inventors: Roland Grozinger, Detlef Ramin
  • Publication number: 20130250458
    Abstract: Disclosed herein are systems and methods for leveraging the inherent redundancy of electrical measurement inputs available to microprocessor-based intelligent electronic devices (IEDs). Specifically, an IED may receive a plurality of electrical measurements associated with an electric power delivery system, such as measurements associated with a generator. A first protection module may be configured to detect a first type of electrical disturbance using a first subset of the plurality of electrical measurements. A second protection module may be configured to detect a second type of electrical disturbance using a second subset of the plurality of electrical measurements. A first redundant protection module may be configured to verify the detection of the first type of electrical disturbance using at least a portion of the second subset of the plurality of electrical measurements.
    Type: Application
    Filed: March 26, 2012
    Publication date: September 26, 2013
    Inventors: Dale S. Finney, Bogdan Z. Kasztenny, Normann Fischer
  • Patent number: 8537511
    Abstract: Systems and methods for dynamically clearing faults in a power transmission line involve automatically terminating ends of a section of the power line while preserving electrical and/or physical continuity of the power line. The terminating of the ends is reversed at about voltage zero-crossings in the power line to clear a fault.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: September 17, 2013
    Inventors: Roderick A. Hyde, Muriel Y. Ishikawa, Lowell L. Wood, Jr., Victoria Y.H. Wood
  • Patent number: 8508893
    Abstract: An distributed electronic circuit (1), such as a transmission line or distributed amplifier, is disclosed comprising an input terminal (2), an output terminal (3), power supply lines (4,5), a sequence of sections (61, 62, 63, 64, 65), between the input terminal (2) and the output terminal (3), arranged to transfer an electrical signal from one section to another section; each section (61, 62, 63, 64, 65) comprising at least one Electro Static Discharge (ESD) protection component (9) configured to, upon occurrence of an ESD event, convey corresponding ESD currents to a power supply line (4, 5); and wherein the ESD components (9) of the respective sections (61, 62, 63, 64, 65) are selected such that, upon occurrence of an ESD event, at least one subsequent section (62, 63, 64, 65) is triggered before the first section (61).
    Type: Grant
    Filed: August 26, 2010
    Date of Patent: August 13, 2013
    Assignee: IMEC
    Inventors: Steven Thijs, Dimitri Linten
  • Patent number: 8452255
    Abstract: A field device for use in an industrial process control or monitoring system includes terminals configured to connect to a two-wire process control loop configured to carry data and to provide power. In one embodiment, RF circuitry in the field device is configured for radio frequency communication having variable power consumption. In another embodiment, the RF circuitry is coupled to the field device through a separate digital communication bus. A method of modulating the power of RF communication based upon a process communication signal is also provided.
    Type: Grant
    Filed: June 27, 2006
    Date of Patent: May 28, 2013
    Assignee: Rosemount Inc.
    Inventor: Kelly M. Orth
  • Patent number: 8451637
    Abstract: The present application discloses methods, circuits and systems for power conversion, using a universal multiport architecture. When a transient appears on the power input (which can be, for example, polyphase AC), the input and output switches are opened, and a crowbar switch shunts the inductance which is used for energy transfer. This prevents this inductance from creating an overvoltage when it is disconnected from outside lines.
    Type: Grant
    Filed: July 5, 2012
    Date of Patent: May 28, 2013
    Assignee: Ideal Power Converters, Inc.
    Inventor: William C. Alexander
  • Publication number: 20130128397
    Abstract: A system for decoupling arcing RF signals in a plasma chamber including a top electrode, an electrostatic chuck for supporting a semiconductor wafer, and a capacitor coupled between the at least one of a plurality of clamping electrodes in the surface of the electrostatic chuck and a baseplate of the electrostatic chuck, the capacitor having a capacitance of greater than about 19 nanofarads, the capacitor disposed within an interior volume of the electrostatic chuck. A method of decoupling arcing RF signals in a plasma chamber is also disclosed.
    Type: Application
    Filed: November 21, 2012
    Publication date: May 23, 2013
    Applicant: Lam Research Corporation
    Inventor: Lam Research Corporation
  • Patent number: 8446745
    Abstract: The present application discloses methods, circuits and systems for power conversion, using a universal multiport architecture. When a transient appears on the power input (which can be, for example, polyphase AC), the input and output switches are opened, and a crowbar switch shunts the inductance which is used for energy transfer. This prevents this inductance from creating an overvoltage when it is disconnected from outside lines.
    Type: Grant
    Filed: July 5, 2012
    Date of Patent: May 21, 2013
    Assignee: Ideal Power Converters, Inc.
    Inventor: William C. Alexander
  • Patent number: 8441819
    Abstract: The present application discloses methods, circuits and systems for power conversion, using a universal multiport architecture. When a transient appears on the power input (which can be, for example, polyphase AC), the input and output switches are opened, and a crowbar switch shunts the inductance which is used for energy transfer. This prevents this inductance from creating an overvoltage when it is disconnected from outside lines.
    Type: Grant
    Filed: July 5, 2012
    Date of Patent: May 14, 2013
    Assignee: Ideal Power Converters, Inc.
    Inventor: William C. Alexander
  • Patent number: 8432711
    Abstract: The present application discloses methods, circuits and systems for power conversion, using a universal multiport architecture. When a transient appears on the power input (which can be, for example, polyphase AC), the input and output switches are opened, and a crowbar switch shunts the inductance which is used for energy transfer. This prevents this inductance from creating an overvoltage when it is disconnected from outside lines.
    Type: Grant
    Filed: July 5, 2012
    Date of Patent: April 30, 2013
    Assignee: Ideal Power Converters, Inc.
    Inventor: William C. Alexander
  • Patent number: 8432650
    Abstract: A control system comprises a solid-state switch, a mechanical current interrupting device, and a control module. The solid-state switch is connected in series with a power source and an intake air heater. The mechanical current interrupting device is connected in series with the power source and the solid-state switch. The control module selectively closes the solid-state switch to provide power to the intake air heater. The control module also causes the mechanical current interrupting device to mechanically interrupt current flow to the intake air heater when a voltage of the intake air heater is outside of a desired range.
    Type: Grant
    Filed: November 5, 2008
    Date of Patent: April 30, 2013
    Assignee: Phillips & Temro Industries Inc.
    Inventor: Ronald N. Seger
  • Publication number: 20130070375
    Abstract: An electrical component having a core and a first and second coil positioned around the core is controlled in such a manner, that in response to the second coil being switched off, the first coil is short-circuited via a quenching circuit to quench the inductive load of the second coil.
    Type: Application
    Filed: January 13, 2011
    Publication date: March 21, 2013
    Inventors: Harald Schueler, Sven Hartmann, Stefan Tumback
  • Patent number: 8400740
    Abstract: A device for limiting a short-circuit current in an alternating-current low-voltage installation includes one or more supply lines having power-supply points with power-supply aggregates protected by feeder switches. The supply lines are separated at an isolating point into two line sections in response to a short circuit fault. One or more polyphase high-speed short-circuiting devices are coupled to the isolating point, having a current carrying capacity sufficient for short-circuit current intensities occurring on the supply line. The high-speed short-circuiting device performs a short-circuit switching operation at the isolating point in response to a trip signal. Two power circuit breakers are each connected in series between each of the line sections and the high-speed short circuiting device. A current-sensing device is coupled to each line section. The current-sensing device detects the short circuit fault, and transmits the trip signal to the high-speed short circuiting device.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: March 19, 2013
    Assignee: Eaton Industries GmbH
    Inventors: Andreas Schumacher, Peter Terhoeven
  • Patent number: 8395868
    Abstract: A device for limiting short-circuit current in a consumer network having at least one supply line with a respective current feed point includes a disconnection point disposed in the at least one supply line so as to provide a first partial line and a second partial line in an event of a short-circuit fault. Each of the first and second partial lines has a respective associated current detector and at least one of the first and second partial lines has at least one current feed aggregate. The device includes a multiphase high-speed short circuiter having a current carrying capacity for short-circuit current intensities in the at least one supply line and a respective power circuit breaker connected in series with the high-speed short circuiter. The respective associated current detector is configured, upon detection of a short circuit in one of the first and second partial lines, to transmit a triggering signal so as to effect a short-circuit switching operation.
    Type: Grant
    Filed: November 14, 2008
    Date of Patent: March 12, 2013
    Assignee: Eaton Industries GmbH
    Inventors: Andreas Schumacher, Peter Terhoeven
  • Patent number: 8390966
    Abstract: A power switch disposed in a housing includes a contact breaker configured to connect and disconnect a low-voltage switchgear from a power source supplying the low-voltage switchgear, a triggering device configured to disconnect the low-voltage switchgear in an overload event, a current detection device, a control device, a first evaluation device configured to evaluate an accidental arc overcurrent, and a second evaluation device configured to evaluate the accidental arc overcurrent. The power switch is configured to be activated via an overcurrent signal generated by an arc monitoring system in response to the accidental arc overcurrent. The overcurrent signal is linked to the at least one triggering signal. The second evaluation has a threshold above a threshold of the first evaluation device. The triggering device is configured to be activated via a turn-off pulse when a signal from the current detection device is above the threshold of the second evaluation device.
    Type: Grant
    Filed: May 9, 2008
    Date of Patent: March 5, 2013
    Assignee: Eaton Industries GmbH
    Inventors: Samuel Dahl, Andreas Schumacher, Wolfgang Wagner
  • Patent number: 8391033
    Abstract: The present application discloses methods, circuits and systems for power conversion, using a universal multiport architecture. When a transient appears on the power input (which can be, for example, polyphase AC), the input and output switches are opened, and a crowbar switch shunts the inductance which is used for energy transfer. This prevents this inductance from creating an overvoltage when it is disconnected from outside lines.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: March 5, 2013
    Assignee: Ideal Power Converters, Inc.
    Inventor: William C Alexander
  • Patent number: 8390968
    Abstract: A device (1) has a series circuit of submodules with a power semiconductor circuit and an energy accumulator connected in parallel with the power semiconductor circuit. Each submodule is associated with a short circuit device for shorting the submodule. The short circuit device is a vacuum switching tube. The device is cost-effective and at the same time enables safe bridging of a defective submodule.
    Type: Grant
    Filed: April 2, 2008
    Date of Patent: March 5, 2013
    Assignee: Siemens Aktiengesellschaft
    Inventors: Jörg Dorn, Werner Hartmann
  • Publication number: 20130050883
    Abstract: In one embodiment, an integrated circuit, and method of manufacturing thereof, is provided. The integrated circuit contains an over-voltage protection element and an over-current protection element. The integrated circuit operates to provide enhanced and efficient ESD functionality. The over-current element of the instant disclosure includes a diffusion protection layer to enhance the lifetime of the over-current element and improve functionality.
    Type: Application
    Filed: August 24, 2011
    Publication date: February 28, 2013
    Inventors: Olaf Pfennigstorf, Wolfgang Schnitt
  • Publication number: 20130044398
    Abstract: An information processing unit is disclosed that includes a load circuit, a pair of terminals that are capable of being connected to and removed from a direct current power source, a first capacitor connected between power terminals of the load circuit, a rush current suppressing circuit configured to suppress rush current flowing from the direct current power source to the first capacitor or the load circuit via the terminals, a buffer circuit connected between the terminals and buffers voltage fluctuation between the terminals, a second capacitor connected in series with the rush current suppressing circuit and the first capacitor in a line parallel to the buffer circuit, a switch connected parallel to the second capacitor, and a first controller configured to turn on the switch when a designated period of time is elapsed after hot insertion of the terminals into the direct current power source.
    Type: Application
    Filed: June 29, 2012
    Publication date: February 21, 2013
    Applicant: FUJITSU LIMITED
    Inventor: Takahiro MIYAZAKI
  • Publication number: 20130033788
    Abstract: Embodiments of the invention are directed to systems and methods using an interruption device for automatically re-routing power upon the occurrence of an event. The interruption device may interrupt the flow of power to an external device upon the detection of an event, such as a circuit overload or short circuit. Interrupting the flow of power may cause power to be cut off to a receiving connector, which supplies power to the external device, by re-routing the flow of power away from the receiving connector by the use of relay switches. By interrupting and re-routing the flow of power, an electrical fire, damage to the external device or other hazard may be prevented. Once the source of the problem, such as a defective external device, has been removed or fixed, the flow of power may be re-routed back to the receiving connector.
    Type: Application
    Filed: August 6, 2011
    Publication date: February 7, 2013
    Inventors: Ferdinand Villegas Legaspi, Michael McGuire, SR., Dana Denton
  • Patent number: 8363365
    Abstract: The resistance of an integrated circuit against ESD (electrostatic discharge) is improved without disturbing improvement of the performance and reduction of size of the integrated circuit. A protection circuit is interposed between an input and output terminals. When ESD is generated, the input and output terminals are short-circuited by the protection circuit, so that overvoltage application to the circuit is prevented. The circuit is electrically connected to the input and output terminals by a connection wiring. The circuit has a plurality of electrical connection portions between the circuit and the connection wiring, and the connection wiring is formed such that the wiring resistance between the input or output terminal and each of the connection portions is the same. Accordingly, if ESD is generated, voltage application on only one of the connection portions is prevented, whereby the possibility that the circuit will be broken by ESD is decreased.
    Type: Grant
    Filed: June 4, 2009
    Date of Patent: January 29, 2013
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Osamu Fukuoka, Hideaki Shishido