With Differential Sensing In A Single Phase System Patents (Class 361/45)
  • Patent number: 10345359
    Abstract: A system comprising: a first high voltage unit that is coupled via a high voltage supply cable to a second high voltage unit; a transformer that is configured to magnetically couple the high voltage supply cable to windings of a transformer; and a detection unit that is configured to monitor a windings signal developed in the windings of the transformer to detect a first high voltage unit arc formed within the first high voltage unit and to detect a second high voltage unit arc formed within the second high voltage unit.
    Type: Grant
    Filed: March 1, 2017
    Date of Patent: July 9, 2019
    Assignee: APPLIED MATERIALS ISRAEL LTD.
    Inventors: Tuvia Biber, Efim Kerner, Efraim Siman Tov
  • Patent number: 10340679
    Abstract: A power distribution system including a high-voltage direct current unit (HVDCU) configured to receive an amount of high-frequency alternating current (AC) input power from a power source and convert the input power into high-voltage DC power, a negative voltage distribution rail and a positive voltage distribution rail that are together configured to supply the high-voltage DC power to at least one control unit (CU) electrically disposed between the negative voltage distribution rail and the positive voltage distribution rail and the CU being configured to convert the high-voltage DC power into output power compatible with at least one load and supply the output power to the loads associated with it.
    Type: Grant
    Filed: October 15, 2014
    Date of Patent: July 2, 2019
    Assignee: Astronics Advanced Electronic Systems Corp.
    Inventor: Jeffrey A Jouper
  • Patent number: 10243347
    Abstract: An isolated DC power supply device that supplies direct current (DC) power via a positive electrode line, a negative electrode line, and a neutral line to which a signal is applied, the isolated DC power supply device including: an amplifying unit configured to amplify the DC power; a receiving unit configured to detect an occurrence of a ground leakage current flowing to the positive electrode line or the negative electrode line, compare a voltage of the neutral point with a voltage of the signal of the neutral line and connect the neutral line with a ground point via a coil; and an impedance adjusting circuit configured to be installed between the amplifying unit and the receiving unit and adjust an impedance in a voltage range of the signal applied to the neutral line and in a voltage range other than the signal voltage range.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: March 26, 2019
    Assignee: SONY CORPORATION
    Inventor: Tadashi Morita
  • Patent number: 10218168
    Abstract: A method is disclosed providing ground fault circuit interruption protection for a pump motor which includes determining a current difference between at least two leads located on a load side of an electromechanical device, wherein the electromechanical device is configured to mechanically drive a road, and wherein the method further comprises interrupting a flow of current in response to the current difference exceeding a threshold current difference.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: February 26, 2019
    Inventor: Thomas Michael Bangle
  • Patent number: 10187278
    Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for assigning channels in a messaging system. An example method includes: providing a plurality of channels, wherein each channel includes an ordered plurality of messages; assigning each channel to a channel bucket to form a plurality of channel buckets, wherein each channel bucket includes at least two channels from the plurality of channels; and assigning each channel bucket to a node selected from a plurality of nodes, wherein the node includes one or more buffers for storing messages according to the order from the channel buckets of the node.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: January 22, 2019
    Assignee: Satori Worldwide, LLC
    Inventors: Igor Milyakov, Fredrik Erik Linder, Anton Koinov, Francois Orsini, Boaz Sedan, Oleg Khabinov, Bartlomiej Puzon
  • Patent number: 10132866
    Abstract: A method is disclosed for testing a latching solenoid of a switch and a testing device for carrying out the method is disclosed. The switch includes a switching contact, formed by contact elements mechanically separated from one another when the switching contact is open; an electronic trip unit, to respectively monitor the current passing via the contact elements and test whether a current-dependent tripping condition is satisfied; and an actuator, to separate contact elements after actuation, the trip unit actuating the actuator via the latching solenoid when the tripping condition is satisfied; and an electrical energy store, to charge to a voltage before the tripping and to be discharged via the latching solenoid. After a period of time after the tripping, the voltage of the energy store is compared with a reference value and a fault signal is output if the voltage of the energy store is above the reference.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: November 20, 2018
    Assignee: Siemens Aktiengesellschaft
    Inventors: Andreas Fischer, Stefan Widmann
  • Patent number: 10114061
    Abstract: A generator system includes a generator controller for monitoring the operation of generator cable. The generator controller is configured to receive a first signal indicative of a generator output and a first connection of a generator cable and a second signal indicative of a second connection of the generator cable. The generator controller is configured to calculate a characteristic value for the generator cable based on the first signal and the second signal and compare the characteristic value for the generator cable to a threshold value. A generator status message or a generator command is generated in response to the comparison. The characteristic value may be resistance of the generator cable.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: October 30, 2018
    Assignee: Kohler Co.
    Inventors: Isaac S. Frampton, Harrison C. Chiu
  • Patent number: 10090878
    Abstract: A system and a method for driving an electrical motor with a drive unit including a wireless transceiver. A user may wirelessly couple a user input device with the transceiver, and use a drive application to, optionally, update configuration information including drive control parameters, update application logic residing in the drive unit, and/or upload performance parameters.
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: October 2, 2018
    Assignee: Franklin Electric Co., Inc.
    Inventors: Greg A. Emshwiller, Richard J. Halsey, Christopher J. Hawkins, Douglas C. Lynn, Robert C. Smith, Ross E. Waite, James H. Spreen
  • Patent number: 10084304
    Abstract: An arc fault circuit interrupter (AFCI) outlet is disclosed which detects and interrupts upstream parallel arc faults. The example AFCI outlet includes a switching element coupled between the line and neutral conductors at the outlet. The outlet also includes a voltage sensor and a current sensor. A parallel upstream arc fault is detected from a sensed voltage drop and no corresponding increase in current. On detecting the arc fault, the switching element is closed and current flows through the relatively lower resistance switching element interrupting power through the arc fault. The closed switching element results in an overcurrent condition causing an upstream conventional thermal-magnetic circuit breaker to trip.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: September 25, 2018
    Assignee: Schneider Electric USA, Inc.
    Inventors: Joseph Beierschmitt, Jeremy Schroeder
  • Patent number: 10060964
    Abstract: An arc fault circuit interrupter detector circuit including a super regenerative high frequency receiver is described herein. In one exemplary, non-limiting embodiment, a current measure component determines that a current noise signal within a circuit breaker is occurring at a particular frequency of interest. The super regenerative high frequency receiver receives the current noise signal and, via an oscillator circuit, causes the signal to ramp to a quench voltage, dissipate, and repeat. A microcontroller in communication with the super regenerative high frequency receiver measures a time period of the oscillator circuit's oscillations, and determines an amplitude of the current noise signal based, at least in part, on the time period. If it is determined that the amplitude of the input current signal at the frequency of interest corresponds to an arc fault event, a trip signal is generated to trip the circuit, quenching the arc fault event.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: August 28, 2018
    Assignee: EATON INTELLIGENT POWER LIMITED
    Inventors: Steven Christopher Schmalz, David Lee McClanahan, Charles John Luebke
  • Patent number: 10054965
    Abstract: Apparatuses and systems for analog/digital input architecture having programmable analog output mode are described herein. One apparatus includes a current source component to create a current source, a pulse-width modulation (PWM) control component to implement an analog output mode, wherein the analog output mode is implemented on a same input/output terminal as at least one other device mode, a dither input component to receive a dither signal, a current shunt component to create an input shunt, a resistance/thermistor input pull-up component to provide an excitation voltage, a voltage/current input scaling component to provide input prescaling, an input protection component to protect at least one port of the apparatus from damage, and an input filter component to provide filtering to high frequency noise.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: August 21, 2018
    Assignee: Honeywell International Inc.
    Inventors: Jeffrey David Lucas, Victor Allen Camp, Eric B. Williams
  • Patent number: 10032588
    Abstract: An integrated contactor/service disconnect assembly according to an exemplary aspect of the present disclosure includes, among other things, a stationary contact, a movable contact selectively movable relative to the stationary contact and a service disconnect unit configured to block the movable contact from contacting the stationary contact.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: July 24, 2018
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Philip Michael Gonzales, Ray C. Siciak
  • Patent number: 9912147
    Abstract: An interface for cutting off the power supply for any fault current Id?300 milliamperes such that: Id?IPE+k·Ih where IPE represents the current returning to the power source via the protective conductor connecting the exposed conductive parts to earth and Ih (?10 or 30 milliamperes) represents the current returning to the power source by ways other than via the protective conductor or via an active conductor. Current Ih is therefore likely to travel through a person. In this way, the interface protects people and property against ground insulation faults and against certain direct contacts independently of the earth of the exposed conductive parts and of external conditions. It also protects people in the event of a failure in the protection of an area using the same earth in case of a fault.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: March 6, 2018
    Inventor: Djamel Mekimah
  • Patent number: 9875843
    Abstract: An electric coil device includes a terminal unit and a coil module. The terminal unit includes a block and multiple terminals. The coil module is mounted to the block and includes first and second winding cores, two first wires and two second wires. Each of the first wires has a transformer wire segment wound on the first winding core, and an inductor wire segment wound on the second winding core. The transformer wire segment of each of the first wires is electrically connected to a respective one of the terminals, and the inductor wire segment of each of the first wires is electrically connected to the respective one of the terminals, thereby achieving the functions of a transformer and a common-mode choke.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: January 23, 2018
    Assignee: BOTHHAND ENTERPRISE INC.
    Inventors: Chung-Cheng Fan, Yung-Ming Pan
  • Patent number: 9739829
    Abstract: A residual-current-operated protective arrangement includes a residual-current-operated protective device that has a core and an evaluation coil. A control device is provided that has a detection unit for detecting an electric current flowing through the evaluation coil. The residual-current-operated protective arrangement has a test winding that is inductively coupled to the evaluation coil via the core and the control device has a testing unit for impressing a predetermined test current into the test winding.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: August 22, 2017
    Assignee: Siemens Aktiengesellschaft
    Inventors: Manfred Adlhoch, Jr., Alexander Mundry
  • Patent number: 9728952
    Abstract: The present invention is directed to an electrical wiring device that includes an automatic test circuit configured to commence an automatic test at a predetermined time such that a test current propagates on a test conductor. The sensor assembly provides a sensor test output responsive to the test current only if both the differential transformer and the grounded neutral transformer are operative. A fault detector circuit is configured to generate a test detection signal in response to the sensor test output only if the fault detector circuit is operable and the at least one power supply is substantially charged. A device integrity evaluation circuit includes a timer that effects a tripped state when a time measurement exceeds a threshold, the test detection signal resetting the time measurement when properly wired before the time measurement exceeds the predetermined threshold but does not reset the time measurement when miswired.
    Type: Grant
    Filed: October 13, 2014
    Date of Patent: August 8, 2017
    Assignee: Pass & Seymour, Inc.
    Inventors: Michael F. McMahon, Kent R. Morgan
  • Patent number: 9702918
    Abstract: An electromagnetic radiation detecting system within an electric system, the electromagnetic radiation detecting system comprising: a plurality of induction rings, each for surrounding one of a plurality of electric lines of the electric system; and a controller connected to the plurality of induction rings, for measuring voltages produced by the plurality of induction rings, and for indicating, from the measuring, electric lines corresponding to induction rings having non-zero sum total electric current flows, thereby indicating the electric lines as being electromagnetic radiation pollution sources.
    Type: Grant
    Filed: March 2, 2015
    Date of Patent: July 11, 2017
    Inventor: Moshe Cohen Gadol
  • Patent number: 9647490
    Abstract: An electric household appliance has a low-voltage capacitive power means (10) connected to an electrical power network (3) and is designed to generate a low-voltage (S2,V2). The low-voltage capacitive power means (10) comprise a capacitive dividing circuit (28) comprising a first (30) and second input terminal (31) connected to a first and second power line (3) at a first (V1) and second (VREF) predetermined potential respectively; a first output terminal (32) adapted to generate said low-voltage enabling signal (S2); first (37) and second charge-accumulating means (38) connected between said first and second input terminal; and at least one voltage limiter (40) connected parallel to said second charge-accumulating means (38) and designed to switch from a non-conducting to a conducting state when subjected to a voltage above a predetermined breakdown voltage (VZ).
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: May 9, 2017
    Assignee: Electrolux Home Products Corporation N.V.
    Inventors: Giuliano Lovisotto, Hubert Dorigo, Fernando De Luca
  • Patent number: 9595895
    Abstract: A system for protecting an inrush resistor by determining whether an inrush relay connected in parallel with the resistor properly closes. A differential amplifier connected across the resistor produces an output signal that is proportional to the differential voltage. A control circuit determines whether the relay is open based on the output signal, and if the relay is open and the motor is running, takes remedial action to protect the inrush resistor. Alternatively, the amplifier is replaced with a slow response filter that produces an output signal that is a delayed version of a bus voltage. The control circuit determines the difference between the bus voltage and the output signal, and if it exceeds a predetermined value and the motor is running, takes remedial action to protect the inrush resistor. Remedial action may include shutting off the motor or restarting the motor to confirm improper behavior of the relay.
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: March 14, 2017
    Assignee: Nidec Motor Corporation
    Inventors: Douglas D. Glenn, Donald R. Mertens
  • Patent number: 9564718
    Abstract: An electrical power plug or receptacle with an over-temperature protection function, including a reset switch operated by a solenoid that electrically connects and disconnects the input side and output side electrical lines, and an temperature-controlled switch disposed in thermal contact with one or more electrical conductor plates on the input or output side. The temperature-controlled switch is connected in series with the solenoid between the output side phase and neutral lines. When the temperature of the temperature-controlled switch is within a normal range, the switch is open and does not form a current path with the solenoid. When the temperature is at or above a threshold temperature, the temperature-controlled switch is closed, a current flows through the switch and the solenoid between the output side phase and neutral lines, and the solenoid operates the reset switch to disconnect the input side from the output side.
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: February 7, 2017
    Inventor: Chengli Li
  • Patent number: 9476928
    Abstract: A test system for testing a sensor system includes a high-impedance resistor for forming a voltage divider with any corrosion or foreign substance that might be present between a signal conductor and a ground conductor. While a voltage is applied across the voltage divider, the voltage can be measured across the high-impedance resistor for determining whether an undesirable amount of conductance exists between the signal wire and ground. The test system also includes switching means for switching between any number of signal wires of a system undergoing testing.
    Type: Grant
    Filed: October 14, 2014
    Date of Patent: October 25, 2016
    Assignee: Textron Innovations Inc.
    Inventor: Gary Froman
  • Patent number: 9430012
    Abstract: A system includes an excitation system configured to regulate one or more outputs of a power generating system. The excitation system includes data processing circuitry configured to obtain an electrical voltage measurement and an electrical current measurement associated with the power generating system, a transformer failure detection system configured to detect an abnormality associated with the electrical voltage and electrical current measurements as an indication of a possible transformer failure, and a failure detection deactivation system configured to deactivate the transformer failure detection system based at least in part on whether the abnormality comprises one of a first condition or a second condition.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: August 30, 2016
    Assignee: General Electric Company
    Inventor: William Robert Pearson
  • Patent number: 9417268
    Abstract: An earth clamp for testing contact voltage, comprising a measuring circuit formed of a voltage inducing transformer and a current measuring transformer, adapted to be mutually coupled by an earth conductor whose earth impedance is to be measured, a microcontroller to deliver an alternating voltage to the voltage inducing transformer and, in response, to receive a reference voltage generated in the earth conductor and an earth current iB+iF induced in the current measuring transformer, the microcontroller being configured to extract an amplitude E of the reference voltage, an amplitude IB and an amplitude IF of the earth current and a phase shift ? between the reference voltage and the loop current iB and to calculate the earth impedance Zb at a determined frequency, the microcontroller also computing the contact voltage Uc at said determined frequency by the product of the earth impedance times the amplitude IF.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: August 16, 2016
    Assignee: CHAUVIN ARNOUX
    Inventor: Philippe Legros
  • Patent number: 9377498
    Abstract: A system and a method for measuring leakage current in an electrical transmission network. The system contains a plurality of electric current measurement devices distributed along the electrical transmission network and at least one central controller. The current measurement devices measure the electric current substantially continuously or repeatedly and report to the central controller. The central controller performs analysis of the measurements of the electric current along the transmission network and calculates the leakage current.
    Type: Grant
    Filed: December 10, 2007
    Date of Patent: June 28, 2016
    Assignee: ELECTRICAL GRID MONITORING LTD.
    Inventor: Sabatino Nacson
  • Patent number: 9369035
    Abstract: A power converter includes a first phase leg including a first di/dt reactor and a first control section, the first di/dt reactor and the first control section being coupled between an active line and a neutral line. The power converter also includes a first current crowbar coupled between the active line and the neutral and a controller coupled to the first di/dt reactor, the control section and the first current crowbar and configured to activate the current crowbar based on a voltage across the first di/dt reactor.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: June 14, 2016
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Cyrus David Harbourt, Mark Eugene Shepard
  • Patent number: 9337643
    Abstract: An arc fault detector, an electrical device having the arc fault detector, and a method of controlling the electrical device. The arc fault detector includes a current detector to detect current flowing through a plurality of loads in an electrical device, a filter unit to pass current having a frequency equal to or higher than a predetermined cut-off frequency from the frequency of the detected current, a comparison unit to compare a voltage of the passed current with a predetermined threshold voltage and output a comparison signal based on a comparison result, and a controller to determine whether an arc fault has been generated by comparing the comparison signal with a predetermined reference arc fault signal, determine a load having the arc fault from among the plurality of loads, and control cut-off of power to the determined load.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: May 10, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Sun Jin Kim
  • Patent number: 9255957
    Abstract: An earth fault detection circuit for detecting an earth fault between a high-voltage battery and a motor includes: an A.C. signal generation portion generating an A.C. signal; a first capacitive element between the A.C. signal generation portion and one end side of the high-voltage battery; a voltage dividing circuit dividing a voltage on the one end side of the high-voltage battery; an earth fault detection portion detecting the earth fault between the high-voltage battery and the motor based on an earth fault detection signal inputted thereto; and a second capacitive element inputting an A.C. component of the voltage, on the one end side of the high-voltage battery, which is obtained by the voltage division in the voltage dividing circuit as the earth fault detection signal to the earth fault detection portion.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: February 9, 2016
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Tomoyuki Arima, Akihiko Kudo
  • Patent number: 9244109
    Abstract: In one aspect of the invention there is provided a device comprising electrical connector means adapted releasably to connect the device to an electrical circuit overload protection apparatus of a motor vehicle, the device comprising means for measuring an amount of electrical current flowing therethrough and means for outputting from the device a signal corresponding to the amount of electrical current flowing therethrough.
    Type: Grant
    Filed: January 11, 2013
    Date of Patent: January 26, 2016
    Assignee: Jaguar Land Rover Limited
    Inventors: Ian Smith, Alexandros Mouzakitis
  • Patent number: 9239368
    Abstract: Methods and apparatus for continuous ground fault self-test are disclosed. An example ground fault detection device includes a sense coil to detect current in a line conductor and a neutral conductor, the sense coil comprising a winding influenced by a current difference between the line conductor and the neutral conductor. The example ground fault detection device also includes a current bypass to facilitate a continuous current imbalance detected by the sense coil, and a ground fault detector circuit to detect at least one of the continuous current imbalance in the sense coil or a ground fault current imbalance.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: January 19, 2016
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Artur J. Lewinski, Ross Teggatz, Thomas E. Cosby
  • Patent number: 9231415
    Abstract: A stored electric power discharging circuit for an inverter device includes a group of series resistors configured to be connected in parallel to a plurality of main circuit capacitors in a normal operation, a voltage stabilization circuit configured to stabilize interterminal voltages of the respective main circuit capacitor according to a divided voltage of the series resistors during the normal operation, and a control switch having a control input and configured to cut the direct connection between the series resistors at a time of power-off, thereby breaking a voltage stability state of the main circuit capacitors by the voltage stabilization circuit.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: January 5, 2016
    Assignee: Toshiba Schneider Inverter Corporation
    Inventors: Yoshihiro Kainuma, Yoichi Goshi
  • Patent number: 9225262
    Abstract: An inverter includes a multilevel bridge circuit. A control circuit is operatively coupled to the multilevel bridge circuit and configured to detect an overcurrent for an output of the inverter, to generate a measure of a duration of the overcurrent and to selectively put an output of the bridge circuit in a first impedance state or a second impedance state based on the measure. The first and second impedance states may provide respective first and second impedances between the bridge circuit output and a neutral.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: December 29, 2015
    Assignee: Eaton Corporation
    Inventor: Tuomas Esko Aaltio
  • Patent number: 9210817
    Abstract: A pluggable module is provided for being pluggably received within a receptacle assembly. The pluggable module includes a circuit board configured to be terminated to a cable, and a housing extending a length from a plug end to a cable end. The housing includes complementary first and second shells that are mated together along a mating axis such that the first and second shells define an interior chamber of the housing. The circuit board is held within the interior chamber such that the circuit board is exposed at the plug end. The first and second shells includes respective first and second openings that extend into the respective first and second shells along respective first and second central axes that each extend non-parallel to the mating axis. The first and second openings are at least partially aligned. A spring pin extends within the first and second openings to hold the first and second shells together.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: December 8, 2015
    Assignee: Tyco Electronics Corporation
    Inventors: Eric David Briant, Troy Lyndon Blazek
  • Patent number: 9182437
    Abstract: A method and circuit assembly for the diagnosis of a load path in a vehicle. The load path comprises a DC voltage source, a switchable load permanently connected to a negative pole and a load switch permanently connected to a positive pole, controlled by a load control signal, wherein in the closed state of the load switch a load current can be conducted through the switchable load (34). During diagnosis a test current having a defined level is generated and is output to the switchable load in accordance with a test control signal via a test switch on an output terminal, wherein a resulting voltage is detected, processed and evaluated at the output terminal, wherein the load switch (36) is opened during the diagnosis, and wherein at least two different diagnostic cases are generated via the test control signal and the resulting switching state of the test switch.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: November 10, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Szilard Szoke, Zoltan Kosznai, Istvan Fater
  • Patent number: 9148010
    Abstract: Safety apparatus is disclosed for use with a load circuit connectable to a power supply via an Active conductor and a Neutral return conductor and including an Earth return conductor. The apparatus comprises means for detecting a difference in load current flowing between an energized Active conductor and the Neutral return conductor; and means for disconnecting the load circuit from the power supply in response to the difference in load current, wherein the means for detecting includes means for sensing a leakage current flowing between the Earth return conductor and the Neutral return conductor. A method of operating a load circuit connectable to a power supply via an active conductor and a neutral return conductor is also disclosed.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: September 29, 2015
    Assignee: HYBRID ELECTRONICS AUSTRALIA PTY LTD
    Inventors: Walter Henry Berryman, David Jankowski
  • Patent number: 9143710
    Abstract: The present invention relates to a sensor-integrated chip for a CCD camera in which a CCD sensor, an H/V driver for driving the CCD sensor, and an ISP (Image Signal Process) chip, which inputs a control signal for driving the CCD sensor to the H/V driver and allows a video to be displayed on a monitor (not shown) in response to an output signal from the CCD sensor, are stacked and connected with each other by inter-pad wire bonding into one IC package to be one chip, by an SIP (system In Package) method.
    Type: Grant
    Filed: April 21, 2012
    Date of Patent: September 22, 2015
    Assignee: SEMISOLUTION CO., LTD.
    Inventors: Jung Won Lee, Seok Yong Hong, Jeong Ho Lim
  • Patent number: 9136082
    Abstract: A ground-fault circuit interrupter (GFCI) device, including a relay for control a switch to be in an open position or a closed position, the relay including a first coil and a second coil, wherein when both the first coil and the second coil are non-conductive, the switch is caused to be in the open position. The GFCI also includes a relay start circuit connected to the first coil for causing the first coil to be conductive or non-conductive, wherein when the first coil is conductive, the first coil causes the switch to be in the closed position, but after the first coil is conductive, the coil start circuit becomes non-conductive. The GFCI further includes a relay sustain circuit connected to the second coil for causing the second coil to be conductive or non-conductive.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: September 15, 2015
    Inventors: Chengli Li, Guolan Yue
  • Patent number: 9136074
    Abstract: A residual current circuit breaker having a core-balance current transformer for detecting a residual current, wherein a secondary winding is arranged on a core of the core-balance element transformer, wherein the residual current circuit breaker has an AC measurement arrangement and a DC measurement arrangement, wherein the AC and DC measurement arrangements are designed to operate simultaneously and in parallel.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: September 15, 2015
    Assignee: EATON INDUSTRIES (AUSTRIA) GMBH
    Inventors: Rainer Meisel, Georg Ritzinger
  • Patent number: 9134345
    Abstract: A method and a device for galvanically isolated, AC/DC sensitive current measurement including a control current transformer having a temporally changeable magnetic control flux which is not coupled to the magnetic flux in a measuring current transformer and forms a magnetic circuit in such a manner that a segment of the magnetic circuit of the measuring current transformer is formed as a shared segment with the magnetic circuit of the control current transformer so that the material forming the shared segment is permeated by the control flux and in connection with a nonlinear magnetic characteristic curve causes a change of the relative permeability in the material forming the segment and thus an induced partial voltage in the secondary winding.
    Type: Grant
    Filed: June 10, 2013
    Date of Patent: September 15, 2015
    Assignee: BENDER GMBH & CO. KG
    Inventor: Dieter Hackl
  • Patent number: 9134354
    Abstract: The embodiments disclose a circuit for detecting and determining a type of ground fault in a security system. An operational amplifier (OA) having positive and negative inputs and an output may receive AC input signals having different frequencies, f1 and f2 at a positive input and provide an AC output signal at the output. An OA feedback loop may comprise a ground fault equivalent impedance connected at the OA negative input and a feedback resistor connected between the OA output and the OA negative input. A rectifier may convert the AC output signal to a DC signal and a filter to obtain a steady DC voltage from the rectified DC signal. A steady DC voltage for two different AC input signals may be obtained and converted to a relative voltage with respect to a constant input voltage amplitude. The relative voltages may be compared to detect and determine a type of ground fault condition.
    Type: Grant
    Filed: October 9, 2012
    Date of Patent: September 15, 2015
    Assignee: TYCO SAFETY PRODUCTS CANADA LTD.
    Inventors: Andrei Bucsa, Stephen D. W. Fosty, Aurel Cojocaru
  • Patent number: 9130400
    Abstract: Power converters are provided that convert alternating current (AC) power to direct current (DC) power. A power converter may have multiple ports. Each port may have an associated connector with multiple power and data terminals. When an electronic device is connected to a given port, the electronic device draws DC power from the power converter. To ensure that the capacity of the power converter is not exceeded when multiple devices are connected to the ports of the power converter, the power converter may actively monitor its ports for active loads. Load detection circuitry can determine what number of ports are active. Control circuitry can compute a per-port available DC power level based on the number of active ports and can provide this information to connected devices.
    Type: Grant
    Filed: September 24, 2009
    Date of Patent: September 8, 2015
    Assignee: Apple Inc.
    Inventors: Jeffrey J. Terlizzi, Nicholas A. Sims
  • Patent number: 9124094
    Abstract: A method and circuit for detecting and clamping current in a ground fault circuit interrupter circuit. In accordance with an embodiment the circuit includes an amplifier connected to a switch, where in the amplifier has an input connected to a first conduction terminal of the switch through a resistor and another input connected to a second conduction terminal of the switch. An output of the amplifier is connected to a control terminal of the switch. The circuit may include a ground fault circuit interrupter engine having an input connected to the first conduction terminal of the switch and another second input connected to the second conduction terminal of the switch.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: September 1, 2015
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Riley D. Beck, Kent D. Layton
  • Patent number: 9091709
    Abstract: A circuit arrangement detects a maximum in a profile of a measurement signal. The circuit arrangement has an operational amplifier with a non-inverting input connected to a reference potential and an output connected to an inverting input via a first resistor. The first resistor has an input connection, to which the measurement signal is applied and which is connected to the inverting input of the operational amplifier via a series circuit containing a capacitor and a second resistor. The connection point between the capacitor and the second resistor is connected to the negative supply potential of the operational amplifier via a third resistor and a first, reverse-biased diode. The connection point between the third resistor and the first diode is connected to the output of the operational amplifier via a second, forward-biased diode. The reference potential is a positive potential.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: July 28, 2015
    Assignee: Continental Automotive GmbH
    Inventor: Stephan Bolz
  • Patent number: 8989680
    Abstract: According to one aspect, a method is provided for determining a state of a receiver on a transmission line. The method may comprise, for example, evaluating a first voltage arising at a circuit point between an impedance and a transmission line coupled to the impedance, wherein the impedance is coupled between a transmitter and the receiver, and determining a state of the receiver based on the first voltage. According to further aspects, various apparatuses are provided for performing this and other methods.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: March 24, 2015
    Assignee: Infineon Technologies AG
    Inventor: Andreas Hebenstreit
  • Patent number: 8958183
    Abstract: The present disclosure provides an industrial GFCI for control panels and/or industrial machines. The industrial GFCI senses when a fault condition has occurred in an associated circuit or load and quickly disconnect the circuit. In some exemplary embodiments, the industrial GFCI includes a bypass switch, which couples a load directly to a power source, bypassing fault detection. In some exemplary embodiments, the industrial GFCI also includes intelligent filtering, which discriminate between true fault events and false signals caused by environmental noise. Further, the industrial GFCI is manufactured as a part of a control panel or a piece of equipment. In certain exemplary embodiments, the industrial GFCI is manufactured as a portable kit capable of coupling to and decoupling from one or more control panels, machines, etc.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: February 17, 2015
    Assignee: Cooper Technologies Company
    Inventors: Darron Lacey, Luis F. Salas, Carlos Eduardo Restrepo
  • Publication number: 20140313624
    Abstract: A solar energy conversion apparatus includes a solar energy conversion unit and a ground fault detection and interruption unit. The ground fault detection and interruption unit includes a switch subunit, a control subunit, and a leakage current sensing subunit. The control subunit is configured to turn off the switch subunit when the leakage current sensing subunit senses that a leakage current passing through the leakage current sensing subunit exceeds a predetermined leakage current threshold.
    Type: Application
    Filed: April 23, 2013
    Publication date: October 23, 2014
    Applicant: Chicony Power Technology Co., Ltd.
    Inventors: Jyun-Ji CHEN, Wei-Shun HUANG
  • Patent number: 8861146
    Abstract: The present invention is directed to an electrical wiring device for use in an electrical distribution system. The device includes a plurality of line terminals configured to terminate the plurality of line conductors and a plurality of load terminals configured to terminate the plurality of load conductors. The protective circuit assembly includes at least one fault detector configured to generate a fault detection signal based on electrical perturbations propagating on at least one of the plurality of line terminals or at least one of the plurality of load terminals. A device integrity evaluation circuit includes a timing circuit coupled to the source of AC power by way of the plurality of load terminals and configured to generate a time measurement. The device integrity evaluation circuit is configured to reset the time measurement if the protective circuit assembly generates the fault detection signal during a predetermined test interval in the properly wired condition.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: October 14, 2014
    Assignee: Pass & Seymour, Inc.
    Inventors: Michael McMahon, Kent R. Morgan
  • Publication number: 20140233138
    Abstract: A ground fault circuit interrupter (GFCI) includes a sense coil to determine a current flow in a power circuit coupled between a power source and a load. The GFCI also includes a switching device configured to disconnect the power source from the load. The GFCI further includes a controller that controls the switching device based on the current flow in the power circuit. The GFCI additionally includes an electrical power supply that provides electrical power to the switching device. The power supply is electrically separate and isolated from the power circuit. The GFCI may be used to monitor a power circuit connected to a tuned resonant circuit, such as a source or capture resonator of a wireless power transfer system, since inductive elements in the switching device, such as solenoids, are isolated from the power circuit and therefore cannot unbalance a tuned resonant circuit connected to the power circuit.
    Type: Application
    Filed: February 15, 2013
    Publication date: August 21, 2014
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventor: RONALD J. GLIEBE
  • Patent number: 8749929
    Abstract: A circuit interrupter includes a trip actuator configured to cooperate with an operating mechanism to trip open separable contacts. The circuit interrupter also includes a ground fault sensor configured to sense a difference between a current through a first electrical conductor and a current through a second electrical conductor and to output an output current based on the sensed difference and a ground fault amplifier circuit configured to convert the output current to an output voltage. The circuit interrupter also includes first and second switches configured to electrically connect the output of the ground fault sensor to the ground fault amplifier circuit and the trip actuator, respectively. The circuit interrupter also includes a processor configured to control operation of the first and second switches and, when the first switch is closed, to control operation of the trip actuator based on the output voltage.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: June 10, 2014
    Assignee: Eaton Corporation
    Inventor: Theodore Miller
  • Publication number: 20140153144
    Abstract: The present disclosure provides an industrial GFCI for control panels and/or industrial machines. The industrial GFCI senses when a fault condition has occurred in an associated circuit or load and quickly disconnect the circuit. In some exemplary embodiments, the industrial GFCI includes a bypass switch, which couples a load directly to a power source, bypassing fault detection. In some exemplary embodiments, the industrial GFCI also includes intelligent filtering, which discriminate between true fault events and false signals caused by environmental noise. Further, the industrial GFCI is manufactured as a part of a control panel or a piece of equipment. In certain exemplary embodiments, the industrial GFCI is manufactured as a portable kit capable of coupling to and decoupling from one or more control panels, machines, etc.
    Type: Application
    Filed: December 3, 2012
    Publication date: June 5, 2014
    Inventors: Darron Lacey, Luis F. Salas, Carlos Eduardo Restrepo
  • Publication number: 20140139956
    Abstract: A fault detecting device having a plurality of supply conductors, including a first current transformer having a primary winding comprising at least two supply conductors and a secondary winding into which a current is induced in response to a fault current in the primary winding. A fault detection circuit connects the secondary winding to an electromechanical actuator having mechanical contacts in the supply conductors, the fault detection circuit generating an output signal to the actuator when an induced current is detected in the secondary winding, the output signal causing the actuator to open the mechanical contacts. The device further includes a second current transformer having a primary winding connected to an oscillator and a secondary winding comprising at least one supply conductor, the second current transformer arranged to induce an oscillating current into the at least one supply conductor in the event of a fault condition.
    Type: Application
    Filed: September 24, 2013
    Publication date: May 22, 2014
    Applicant: Shakira Limited
    Inventor: Patrick Ward