Control Circuits For Nonelectromagnetic Type Relay (e.g., Thermal Relays) Patents (Class 361/211)
  • Patent number: 10775198
    Abstract: A device has a construction capable of promoting miniaturization, and comprises: a coil; a magnetism-responsive member disposed so as to be displaced relative to the coil according to a position of a detection object; and a self-oscillation circuit that incorporates the coil therein as an oscillation element so that an oscillation frequency varies with an inductance variation of the coil responsive to an displacement of the magnetism-responsive member relative to the coil. An arithmetic section generates a measured value responsive to oscillation frequency based on an oscillation output of the self-oscillation circuit, calculates velocity data by differentiating successive measured values, and calculates displacement data by integrating the velocity data.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: September 15, 2020
    Assignee: AMITEQ CO., LTD.
    Inventors: Daisuke Goto, Nobuyuki Akatsu, Kazuya Sakamoto
  • Patent number: 10614975
    Abstract: A retrofit switch apparatus is designed to pair with a traditional switch device that has a traditional switch for accepting a first user manual operation to control a target device connected to the traditional switch device with an electrical wire. The traditional switch device has a connecting structure. The retrofit switch apparatus has an attaching device, a retrofit housing and a control circuit. The attaching device is attached to the connecting structure of the traditional switch device. The control circuit wirelessly controls the target device.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: April 7, 2020
    Assignee: LEEDARSON AMERICA INC.
    Inventor: Yongchuan Li
  • Patent number: 10614972
    Abstract: A retrofit switch apparatus is attached to a traditional switch device. The traditional switch device has a traditional switch for accepting a first user manual operation to control a target. The retrofit switch apparatus includes an attaching device, a retrofit housing and a touch module. The attaching device is attached to the traditional switch device. The retrofit housing provides a containing space for covering the traditional switch. The touch module has a touch surface and a driver circuit. The touch surface receives a second user manual operation processed by the driver circuit.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: April 7, 2020
    Assignee: LEEDARSON AMERICAN INC.
    Inventor: Yongchuan Li
  • Patent number: 10139885
    Abstract: Systems, methods, and apparatus to facilitate wireless device monitoring and control are provided. A first device controller may be adapted to be disposed within a power connector, in series with conductors of the power connector. The power connector may be adapted to provide power from a power source to a device. The first device controller may include two terminals to electrically couple the first device controller with the conductors of the power connector. The first device controller may further include a power component to power the first device controller. The first device controller may be configured to monitor one or more conditions of the device, control one or more functions of the device, and wirelessly communicate with a system controller that is remote from the power connector and the device. The power connector may correspond to a power plug and/or a terminal block.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: November 27, 2018
    Assignee: DISH Technologies L.L.C.
    Inventor: Geoffrey Thompson
  • Patent number: 10128698
    Abstract: An assembly and method are provided for detecting an object within a wireless charging region of an electric vehicle. The method includes applying by a controller, a voltage to the wireless charging region to generate a capacitance value and measuring by the controller, the capacitance value of an electromagnetic shield disposed on the underside of the vehicle. Further, the controller monitors the capacitance value of the electromagnetic shield; and the controller detects a change in the capacitance value when the object enters the wireless charging region.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: November 13, 2018
    Assignees: Hyundai America Technical Center, Inc, Hyundai Motor Company, Kia Motors Corporation
    Inventors: Allan Lewis, Bilal Javaid
  • Patent number: 9676613
    Abstract: The present embodiments are directed towards the optical control of switching an electrical assembly. For example, in an embodiment, an electrical package is provided. The electrical package generally includes a micro electromechanical systems (MEMS) device configured to interface with an electrical assembly, the MEMS device being operable to vary the electrical assembly between a first electrical state and a second electrical state, a MEMS device driver in communication with the MEMS device and being operable to produce high voltage switching logic from an electrical signal, and an optical detector in communication with the MEMS device driver and configured to produce the electrical signal from an optical signal produced by a light source in response to an applied current-based electrical control signal.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: June 13, 2017
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Joseph Alfred Iannotti, Eric William Fiveland, William Chester Platt
  • Patent number: 8982528
    Abstract: Logic circuit for integrated circuit comprising a variable supply voltage source, the variation of which comprises at least three successive phases, a first phase of increasing the voltage from a zero value to a nominal voltage, a second phase of maintaining the supply voltage at the nominal voltage and a third phase of reducing the supply voltage from the nominal voltage to a zero value, and at least two mechanical switches, said switches being microelectromechanical switches or nanoelectromechanical switches, and means of switching said switches.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: March 17, 2015
    Assignee: Commissariat a l'energie atomique et aux energies alternatives
    Inventor: Hervé Fanet
  • Publication number: 20140327997
    Abstract: A device is provided for controlling at least one electrical power supply switch. The device includes at least one input port configured to receive a control signal of the at least one switch and a control circuit coupled to the input port. The control circuit is configured to actuate the at least one switch. The control circuit is electrically passive in the absence of any control signal and is configured to be supplied electrically by the control signal.
    Type: Application
    Filed: September 25, 2012
    Publication date: November 6, 2014
    Inventor: Pascal Pagani
  • Publication number: 20140277804
    Abstract: A device for interrupting a flow of electrical power in an electrical distribution system is provided. The electrical distribution network includes a circuit interrupting device, the circuit interrupting device having a reclose time. The device includes a sensor configured to generate a signal in the event of loss of system power. A switch is coupled to the electrical distribution system and is movable between an open and closed position. A controller is operably coupled to the sensor and the switch, the controller having a processor that initiates a timer in response to the signal and determines a measured reclose time with the timer. The processor is further responsive to actuate the switch in response to the measured reclose time is substantially equal to the reclose time of the at least one circuit interrupting device.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 18, 2014
    Inventor: John Witte
  • Patent number: 8817447
    Abstract: A deactivation device for disconnecting an electrical energy source from a load includes at least two one-time switches. The one-time switches become inoperative upon switching in response to the presence of a load exceeding a critical value, thereby disconnecting an electrical connection. The one time switches are connected in parallel, and the deactivation device is configured in such a way that, except for a one-time switch, which is provided for disconnecting the energy source from the load and for connecting the energy source to the load, the at least one other one-time switch remains open. In the case of an inoperativeness of the one one-time switch, the at least one other one-time switch is used for disconnecting the energy source from the load and for connecting the energy source to the load.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: August 26, 2014
    Assignee: Robert Bosch GmbH
    Inventor: Stefan Butzmann
  • Patent number: 8804295
    Abstract: Integrated circuits with configurable multi-gate switch circuitry are provided. The switch circuitry may include switch control circuitry and an array of multi-gate switches. Each multi-gate switch may have first and second terminals, first and second gates, and a metal bridge. The metal bridge is attached to the first terminal. The metal bridge may extend over the gates and may hover above the second terminal in the off state. The metal bridge may have a tip that bends down to physically contact the second terminal in the on state. Switch control circuitry may provide row and column control signals to load desired switch states into the switch array. The switch array may be partitioned into groups of switches that form multiplexers. The multiplexers may be used in programmable circuits such as programmable logic device circuits.
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: August 12, 2014
    Assignee: Altera Corporation
    Inventor: David Lewis
  • Publication number: 20140184028
    Abstract: Methods and systems may provide for a hybrid RF MEMS component design including an electrostatic actuation and a piezoelectric actuation. In one example, the method may include applying a first voltage to generate a first piezoelectric force to reduce a first gap between a cantilever and an actuation electrode, and applying a second voltage to generate an electrostatic force to create contact between the cantilever and a transmission electrode.
    Type: Application
    Filed: December 27, 2012
    Publication date: July 3, 2014
    Inventors: Hao-Han Hsu, Rashed Mahameed, Mohamed A. Abdelmoneum, Dong-Ho Han
  • Publication number: 20140049871
    Abstract: A modular electronic detection device comprises a mechanical actuator connected to a target through a front surface of a panel. The device further comprises a plurality of sensors for detecting the position of the target, which are connected to a printed circuit board. The modular detection device of the present invention can be incorporated into an aircraft and can be used in aircraft assembly.
    Type: Application
    Filed: April 16, 2012
    Publication date: February 20, 2014
    Applicant: EUROPEAN AERONAUTIC DEFENCE AND SPACE COMPANY EADS FRANCE
    Inventors: Katell Moreau, Benoit Dantin, Nicolas Chevassus
  • Patent number: 8519686
    Abstract: A solid state power controller (SSPC) for soft start of a direct current (DC) link capacitor of a DC power distribution system includes a power input connected to a DC power source of the DC power distribution system; a plurality of power switches arranged in parallel, the plurality of power switches being connected to a power output of the SSPC, the power output being connected to the DC link capacitor; and an SSPC controller configured to: pulse width modulate the plurality of power switches with a phase-shifted sequence in a current limiting mode; determine whether soft start is complete; and in response to determining that the soft start is complete, turn on the plurality of switches at a maximum gate-source voltage.
    Type: Grant
    Filed: May 19, 2010
    Date of Patent: August 27, 2013
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Gregory I. Rozman, Joshua C. Swenson, Vietson M. Nguyen
  • Patent number: 8471721
    Abstract: A server rack includes a main body, an electronic scale, and an alarm. The main body is used for receiving a number of servers. The electronic scale includes a pressure sensor and a microcontroller. The main body presses on the pressure sensor so that the pressure sensor can measure the pressure from the main body to obtain a pressure signal. The microcontroller analyzes the pressure signal to calculating the total weight of the main body and the servers. The alarm stores a predetermined weight threshold, which is the total weight of the main body and the maximum servers that the main body can bear. The alarm also compares the measured total weight with the predetermined weight threshold. When the measured total weight is larger than the predetermined weight threshold, the alarm alarms.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: June 25, 2013
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Song-Lin Tong, Guang-Dong Yuan, Hai-Qing Zhou
  • 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: 20130083444
    Abstract: A method and apparatus for controlling an electromechanical relay. In one embodiment, the method comprises reducing a relay current of a relay that is activated, determining a first value of the relay current, wherein the first value is either a minimum default current value or a value of the relay current at which the activated relay deactivates, and determining a holding current value for maintaining the relay in an activated state, wherein the holding current value is at least the first value and less than a second value of the relay current at which the relays activates.
    Type: Application
    Filed: October 4, 2012
    Publication date: April 4, 2013
    Applicant: Enphase Energy, Inc.
    Inventor: Enphase Energy, Inc.
  • Publication number: 20130062330
    Abstract: A kind of anti-adhesion device for a relay. The device can include a control circuit and adhesion detecting circuit of first and second relays, which are used to respectively control power on and power off of the first and second electric heater. Closing a switch of the control circuit of the first and second relays is used to lead out the line and the output elements of the adhesion detecting circuit, to form a detecting loop. An interlocking circuit is bridged between the control circuit of the first and second relay. Therefore the first and second relay won't be closed at the same time, to avoid the fault caused by parallel connection of electric heaters. The adhesion detecting circuit can output a square wave when a relay has adhesion. The square wave avoids mixing with a low level output of the detecting circuit.
    Type: Application
    Filed: September 7, 2012
    Publication date: March 14, 2013
    Inventors: Xiankun HUANG, Yousheng TANG, Degang LIU, Guobin YANG, Fanghua CHEN
  • Patent number: 8395877
    Abstract: A micro-electro mechanical device includes a first structure, a second structure offset from the first structure by a gap. The first structure is configured to be electrostatically actuated to deflect relative to second structure. A pulse generator is configured to combine at least two different pulses to electrostatically drive at least one of the first structure and the second structure between an initial position and a final position.
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: March 12, 2013
    Assignee: International Business Machines Corporation
    Inventors: Charalampos Pozidis, Angeliki Pantazi, Abu Sebastian, Deepak Ranjan Sahoo
  • Publication number: 20130021714
    Abstract: Logic circuit for integrated circuit comprising a variable supply voltage source, the variation of which comprises at least three successive phases, a first phase of increasing the voltage from a zero value to a nominal voltage, a second phase of maintaining the supply voltage at the nominal voltage and a third phase of reducing the supply voltage from the nominal voltage to a zero value, and at least two mechanical switches, said switches being microelectromechanical switches or nanoelectromechanical switches, and means of switching said switches.
    Type: Application
    Filed: July 20, 2012
    Publication date: January 24, 2013
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENE ALT
    Inventor: Hervé FANET
  • Patent number: 8358501
    Abstract: A motherboard includes a fan and a fan control circuit. The fan control circuit includes a switch module and a voltage control circuit. A first terminal of the switch module is connected to a standby power terminal of the motherboard. A second terminal of the switch module is connected to a first power terminal of the motherboard and connected to a power terminal of the fan. An input terminal of the voltage control circuit is connected to a power state signal terminal of the motherboard. An output terminal of the voltage control circuit is connected to a control terminal of the switch module. When the motherboard is turned off, the voltage control circuit turns on the switch module for a predetermined time, to make the standby power terminal supply a working voltage for the fan to keep the fan rotating for the predetermined time.
    Type: Grant
    Filed: November 28, 2010
    Date of Patent: January 22, 2013
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Kang Wu, Zheng-Heng Sun
  • Publication number: 20120176135
    Abstract: The present embodiments are directed towards the optical control of switching an electrical assembly. For example, in an embodiment, an electrical package is provided. The electrical package generally includes a micro electromechanical systems (MEMS) device configured to interface with an electrical assembly, the MEMS device being operable to vary the electrical assembly between a first electrical state and a second electrical state, a MEMS device driver in communication with the MEMS device and being operable to produce high voltage switching logic from an electrical signal, and an optical detector in communication with the MEMS device driver and configured to produce the electrical signal from an optical signal produced by a light source in response to an applied current-based electrical control signal.
    Type: Application
    Filed: January 11, 2011
    Publication date: July 12, 2012
    Applicant: General Electric Company
    Inventors: Joseph Alfred Iannotti, Eric Fiveland, William Platt
  • Patent number: 8194382
    Abstract: A method of driving a switch having a movable member and a contact first applies (to the switch) a first signal having a first level, and then applies a second signal having a second level to the switch (after applying the first signal). The first level is greater than the second level. One or both of the first and second signals cause the movable member to move to electrically connect with the contact.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: June 5, 2012
    Assignee: Analog Devices, Inc.
    Inventors: Denis Ellis, Raymond Goggin
  • Publication number: 20120134064
    Abstract: A solid-state magnet controller powered by an AC generator using separate silicon controlled rectifier (SCR) bridges to drive current through the magnet in opposite directions. The invention eliminates high voltage transients, first by switching flyback diodes across the magnet using solid state devices, then employing secondary discharge methods to dissipate the remaining stored magnetic energy. Isolated DC-to-DC converters are used as a means of providing drive signals to the solid-state elements. A method to prevent inadvertent FET turn-on is included, as well as a method to slowly decrease the magnet current when desired.
    Type: Application
    Filed: November 29, 2010
    Publication date: May 31, 2012
    Inventor: Michael Allen Weed
  • Patent number: 8133765
    Abstract: The invention relates to a high-frequency integrated circuit requiring ESD protection for a circuit node. One or more metallic layer is deposited within the integrated circuit and patterned to form a transmission line. The metallic layers are generally already present in the integrated circuit for signal routing. The transmission line is coupled between the circuit node and a terminal of an ESD protection device, with a transmission line return conductor coupled to a high-frequency ground. The transmission line is formed with an electrical length that transforms the impedance of the ESD protection device substantially into an open circuit at the circuit node at an operational frequency of the integrated circuit. The other terminal of the ESD protection device is coupled to the high-frequency ground.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: March 13, 2012
    Assignee: Infineon Technologies AG
    Inventors: Uwe Hodel, Wolfgang Soldner
  • Patent number: 8102637
    Abstract: Disclosed are a method, device, and system for a microelectromechanical (MEM) device control system that can control the operation of a MEM device. The system can include a microelectromechanical device and a control circuit. The micromechanical device can include a moveable member coupled to an electrical terminal, a sensor, responsive to a movement of the moveable member, can output a sensor signal based on the movement of the moveable member, and an actuating electrode for receiving a control signal. The control circuit can be responsive to the signals output by the sensor and outputs the control signal to the actuating electrode.
    Type: Grant
    Filed: July 22, 2009
    Date of Patent: January 24, 2012
    Assignee: Analog Devices, Inc.
    Inventors: William Hunt, Denis Ellis, Padraig Fitzgerald, Colin Lyden
  • Publication number: 20110317325
    Abstract: The present invention provides for replacement of conventionally-used metal electrodes in NEMS devices with electrodes that include non-metallic materials comprised of diamond-like carbon or a dielectric coated metallic film having greater electrical contact resistance and lower adhesion with a contacting nanostructure. This reduces Joule heating and stiction, improving device reliability.
    Type: Application
    Filed: June 16, 2011
    Publication date: December 29, 2011
    Inventors: Horacio D. Espinosa, Owen Y. Loh, Xiaoding Wei
  • Publication number: 20110286141
    Abstract: A solid state power controller (SSPC) for soft start of a direct current (DC) link capacitor of a DC power distribution system includes a power input connected to a DC power source of the DC power distribution system; a plurality of power switches arranged in parallel, the plurality of power switches being connected to a power output of the SSPC, the power output being connected to the DC link capacitor; and an SSPC controller configured to: pulse width modulate the plurality of power switches with a phase-shifted sequence in a current limiting mode; determine whether soft start is complete; and in response to determining that the soft start is complete, turn on the plurality of switches at a maximum gate-source voltage.
    Type: Application
    Filed: May 19, 2010
    Publication date: November 24, 2011
    Applicant: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Gregory I. Rozman, Joshua C. Swenson, Vietson M. Nguyen
  • Publication number: 20110032111
    Abstract: An arrangement that includes a transmitter unit and a receiver for locating a wire or a circuit interrupter associated with a selected branch circuit of a power distribution system. The transmitter is electrically interconnected with the selected branch circuit and produces a sequence of current pulses in a branch circuit that is to be traced to locate an associated circuit interrupter. Each current pulse is of a predetermined duration, a predetermined rise time, and a predefined fall time, which in one embodiment is equal to the current pulse rise time. The receiver is a handheld unit that is positioned in close proximity with the various circuit interrupters of the power distribution system and provides an indication that the desired wire or circuit interrupter has been located upon detecting current pulses that are with a predefined pulse duration, pulse separation and amplitude.
    Type: Application
    Filed: August 7, 2009
    Publication date: February 10, 2011
    Applicant: FLUKE CORPORATION
    Inventor: Michael F. Gallavan
  • Publication number: 20110032653
    Abstract: Disclosed is a relay control apparatus and method for electric drive vehicles. The apparatus controls turn-off of a relay operative to connect an electric drive unit with a battery pack for supplying electrical power to the electric drive unit, and comprises a current sensor for measuring and outputting a residual current flowing between the battery pack and the electric drive unit; and a controller for, in a situation requiring turn-off of the relay, receiving the measured residual current value, comparing the measured residual current value with a reference value for the residual current, and controlling to maintain the ON-state of the relay or to turn off the relay on the basis of the comparison results. Accordingly, it prevents a relay of electric drive vehicles from being damaged due to over-current such as a surge current, at the time of turning off the relay.
    Type: Application
    Filed: October 19, 2010
    Publication date: February 10, 2011
    Inventors: Chang-Gi Jung, Ju-Young Kim, Jung-Soo Kang, Cheol-Taek Kim, Do-Youn Kim
  • Publication number: 20110026185
    Abstract: A static relay system configured to be connected in series with an electrical load supplied with AC current, including: two series-connected field-effect transistors fabricated in a material having a high bandgap energy; a detector detecting a threshold of a voltage across the terminals of each of the transistors or of the two transistors; an electromechanical relay connected in series with the transistors; and a controller for opening at least one transistor or the electromechanical relay when the threshold voltage is exceeded.
    Type: Application
    Filed: March 11, 2009
    Publication date: February 3, 2011
    Applicant: Schneider Electric Industries SAS
    Inventors: Thierry Boudet, Sebastien Carcouet
  • Publication number: 20110019330
    Abstract: Disclosed are a method, device, and system for a microelectromechanical (MEM) device control system that can control the operation of a MEM device. The system can include a microelectromechanical device and a control circuit. The micromechanical device can include a moveable member coupled to an electrical terminal, a sensor, responsive to a movement of the moveable member, can output a sensor signal based on the movement of the moveable member, and an actuating electrode for receiving a control signal. The control circuit can be responsive to the signals output by the sensor and outputs the control signal to the actuating electrode.
    Type: Application
    Filed: July 22, 2009
    Publication date: January 27, 2011
    Applicant: ANALOG DEVICES, INC.
    Inventors: William HUNT, Denis ELLIS, Padraig FITZGERALD, Colin LYDEN
  • Patent number: 7848855
    Abstract: There is described a method for operating a system of modular structure, which can be extended during operation by adding modules that consume electrical energy, in particular a process automation system, the system having a power supply, which supplies the other modules of the system with electrical energy, with at least one signal being generated and displayed before a further module that consumes electrical energy is added, from which signal it is possible to identify or derive the level of current electrical power, which the power supply can still supply to the further module to be added given the already added modules—residual power—and/or the level of power, which the power supply supplies currently to the already added modules and/or from which it can be identified or derived whether the module to be added can be added without overloading the power supply.
    Type: Grant
    Filed: May 13, 2008
    Date of Patent: December 7, 2010
    Assignee: Siemens Aktiengesellschaft
    Inventor: Matthias Metzler
  • Publication number: 20100254062
    Abstract: A micro-machined switching system for equalizing an electrical property, such as charge due to parasitic capacitance formed at an input and an output of a micro-machined switching device. The micro-machined switching device may be a MEMS relay or a MEMS switch. In addition to the micro-machined switching device, the switching system also includes a balancing module for equalizing the electrical property between the input and the output of the micro-machined switching device. In certain embodiments, the balancing module includes a switch operable in a first state causing charge due to the parasitic capacitance on the input and the output of the micro-machined switching device to substantially balance. The switch is also operable in a second state wherein parasitic capacitance can separately accumulate at the input and the output of the micro-machined switching device.
    Type: Application
    Filed: June 14, 2010
    Publication date: October 7, 2010
    Applicant: ANALOG DEVICES, INC.
    Inventors: Cammen Chan, Geoffrey Haigh
  • Publication number: 20100238600
    Abstract: A semiconductor device includes a first static actuator having a first drive electrode and a second drive electrode, the first drive electrode and the second drive electrode being capable of coming close to each other upon shifting from an open state to a close state due to an electrostatic attractive force against an elastic force thereof; a detection circuit configured to detect a temperature of the first static actuator; and a drive circuit configured to apply a first voltage between the first drive electrode and the second drive electrode to maintain the first static actuator in the closed state between the first drive electrode and the second drive electrode, and to switch a polarity of the first voltage every first time period. The drive circuit varies a length of the first time period based on a detection result of the detection circuit.
    Type: Application
    Filed: September 4, 2009
    Publication date: September 23, 2010
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventor: Takayuki MIYAZAKI
  • Publication number: 20100232082
    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: Application
    Filed: November 5, 2008
    Publication date: September 16, 2010
    Applicant: PHILLIPS AND TEMRO INDUSTRIES INC.
    Inventor: Ronald N. Seger
  • Publication number: 20100116632
    Abstract: Embodiments disclosed herein generally include using a large number of small MEMS devices to replace the function of an individual larger MEMS device or digital variable capacitor. The large number of smaller MEMS devices perform the same function as the larger device, but because of the smaller size, they can be encapsulated in a cavity using complementary metal oxide semiconductor (CMOS) compatible processes. Signal averaging over a large number of the smaller devices allows the accuracy of the array of smaller devices to be equivalent to the larger device. The process is exemplified by considering the use of a MEMS based accelerometer switch array with an integrated analog to digital conversion of the inertial response. The process is also exemplified by considering the use of a MEMS based device structure where the MEMS devices operate in parallel as a digital variable capacitor.
    Type: Application
    Filed: November 9, 2009
    Publication date: May 13, 2010
    Inventors: CHARLES GORDON SMITH, Richard L. Knipe, Vikram Joshi, Roberto Gaddi, Anartz Unamuno, Robertus Petrus Van Kampen
  • Publication number: 20100090539
    Abstract: Respective pulsed power supplies for plasma opening switches each produce a first current and a second current during a power pulse and a difference between the first current and the second current during a terminal portion of the power pulse. The pulsed power supplies are initiated or adjusted in response to measured opening times of the plasma opening switches in order to minimize or eliminate a need for command triggered opening of the plasma opening switches. Command triggered opening may occur in real time for a shot as needed in response to asymmetry of opening times of the plasma opening switches in the array during the shot.
    Type: Application
    Filed: December 14, 2009
    Publication date: April 15, 2010
    Inventor: Richard Carl Auchterlonie
  • Publication number: 20100061029
    Abstract: In one embodiment of the present invention, a circuit breaker and a method for triggering a circuit breaker are disclosed, particularly a low voltage circuit breaker, including an electronic overload trigger, particularly for the protection against a short circuit, wherein the current is compared to a predetermined limit current and evaluated and the circuit breaker is triggered by the overload trigger, in case a short circuit is present according to the evaluation. In order to be able to reliably detect short circuits, the current is sampled with a predetermined sampling frequency and digitized. The wavelet coefficients of at least two segmentation levels are calculated for a predetermined number of digital current values in direct succession via a wavelet transformation. At least two wavelet coefficients, that is, one wavelet coefficient per segmentation level, are compared quantitatively to each other if the last of the current values in direct succession is larger than the limit current.
    Type: Application
    Filed: October 18, 2007
    Publication date: March 11, 2010
    Inventors: Josef Götz, Frank Jucht, Cornelia Prechtl
  • Publication number: 20100002351
    Abstract: A method and apparatus is provided for controlling power to a DC load ON and OFF. The apparatus has a first FET bank, a second FET bank, connected in series with a first FET bank, and a controller. The controller is configured for detecting a operational failure of at least one of the FET banks, and turning at least on of the FET banks OFF in response, thereby turning power to the DC load OFF. The controller may also detect a operational failure of one of the FET banks, and turn the other FET bank OFF in response, thereby turning power to the DC load OFF.
    Type: Application
    Filed: July 3, 2008
    Publication date: January 7, 2010
    Applicant: Maxon Industries, Inc.
    Inventor: Karapet Ablabutyan
  • Patent number: 7643918
    Abstract: There is disclosed an apparatus for controlling a vehicle equipment device. The apparatus permits a reduction in the cost of manufacturing a vehicle in which the apparatus is installed. The apparatus also enables easy and precise switching between normal mode and delivery mode. The apparatus has a delivery decision unit and control change unit. The decision unit makes a decision as to whether the vehicle is in the delivery mode. If the decision unit determines that the vehicle is in the delivery mode, the control change unit changes the controlled contents of the vehicle equipment device from normal mode to delivery mode. The decision unit makes the aforementioned decision according to whether a backup power supply is applied to a clock device.
    Type: Grant
    Filed: September 26, 2005
    Date of Patent: January 5, 2010
    Assignee: Fuji Jukogyo Kabushiki Kaisha
    Inventors: Syuji Miyama, Kiichiro Ooyama
  • Publication number: 20090284892
    Abstract: A semiconductor device applies a hold voltage Vhold to an upper electrode of an electrostatic actuator and a ground voltage to a lower electrode. After the semiconductor device sets the voltage of the lower electrode to a test voltage Vtest, it eliminates the hold voltage Vhold from the upper electrode and places the voltage of the upper electrode in a high impedance state. The potential difference between the upper electrode and the lower electrode is set to Vhold?Vtest=Vmon. Thereafter, the voltage of the lower electrode is returned to the ground voltage. Whether the electrostatic actuator is placed in an open state or in a closed state is determined by measuring the capacitance between the electrodes based on the amount of drop of the voltage of the upper electrode due to capacitance coupling at the time.
    Type: Application
    Filed: February 24, 2009
    Publication date: November 19, 2009
    Applicant: Kabushiki Kaisha Toshiba
    Inventor: Shinji MIYANO
  • Publication number: 20090154051
    Abstract: Device for connecting two points in an electrical circuit. The device acts externally like an individual relay, but includes a first micro electro-mechanical systems (“MEMS”) relay and at least a second MEMS relay. Each relay has four condenser plates and a conducting element movably housed inside the relay, opening and closing a circuit, by applying certain control signals to the condenser plates. The second relay can be connected to one of the plates of the first relay, to create a high impedance in the plate, or it can be connected serially or in parallel to the first relay but controlled with different control signals, whereby the operational range of the first relay and, therefore, that of the overall device, is extended.
    Type: Application
    Filed: November 23, 2006
    Publication date: June 18, 2009
    Inventor: Josep Montanya Silvestre
  • Publication number: 20080273281
    Abstract: An apparatus comprising a liquid switch. The liquid switch comprises a substrate having a surface with first and second regions thereon and a fluid configured to contact both of the regions. The regions each comprise electrically connected fluid-support-structures, wherein each of the fluid-support-structures have at least one dimension of about 1 millimeter or less. The regions are electrically isolated from each other.
    Type: Application
    Filed: July 16, 2008
    Publication date: November 6, 2008
    Applicant: Lucent Technologies Inc.
    Inventors: Arman Gasparyan, Thomas Nikita Krupenkin, Joseph Ashley Taylor, Donald Weiss
  • Publication number: 20080237005
    Abstract: A method for manufacturing a switching element which has enough resistance to repeat switching operations and which can be miniaturized and have low power consumption, and a display device including the switching element are provided. The switching element includes a first electrode to which a constant potential is applied, a second electrode adjacent to the first electrode, and a third electrode over the first electrode with a spacer layer formed of a piezoelectric material interposed therebetween and provided across the second electrode such that there is a gap between the second electrode and the third electrode. A potential which is different from or approximately the same as a potential of the first electrode is applied to the third electrode to expand and contract the spacer layer, so that a contact state or a noncontact state between the second electrode and the third electrode can be selected.
    Type: Application
    Filed: March 13, 2008
    Publication date: October 2, 2008
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventor: Tatsuya HONDA
  • Patent number: 7405648
    Abstract: There is provided a remote control wiring mechanism, which makes it easy to construct a system by facilitating a connection work and treatment of members constructing the system. A main unit includes signal terminals connected to signal lines and power supply terminals to supply power for driving a relay. A relay unit having a relay is detachably connected to a relay socket of the main unit and is integrally coupled to the main unit. When a transmission signal including on-off information of a switch is received through the signal lines, the on-off state of the switch is reflected in the switching of the relay.
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: July 29, 2008
    Assignee: Matsushita Electric Works, Ltd.
    Inventor: Takeshi Hatemata
  • Publication number: 20080151464
    Abstract: A method of driving a switch having a movable member and a contact first applies (to the switch) a first signal having a first level, and then applies a second signal having a second level to the switch (after applying the first signal). The first level is greater than the second level. One or both of the first and second signals cause the movable member to move to electrically connect with the contact.
    Type: Application
    Filed: December 21, 2007
    Publication date: June 26, 2008
    Applicant: ANALOG DEVICES, INC.
    Inventors: Denis Ellis, Raymond Goggin
  • Patent number: 6924966
    Abstract: A MEMS switch assembly comprising a substrate and a resilient switching member is provided. The resilient switching member comprises a transverse torsion member having a flexible portion, and a leaf spring and cantilever that extend from the flexible portion of the torsion member. The switching assembly further comprises a first anchoring member mounting the torsion member to the stable structure, and a second anchoring member mounting the leaf spring to the stable structure. In this manner, the leaf spring has a flexible portion between the first and second anchors that can be alternately flexed in opposing directions to deflect the cantilever end in the respective opposing directions. The leaf spring can exhibit a first stable geometry (e.g., a convex geometry) when flexed in one of the opposite directions, and a second stable geometry (e.g., a concave geometry) when flexed in another of the opposite directions.
    Type: Grant
    Filed: May 29, 2002
    Date of Patent: August 2, 2005
    Assignee: Superconductor Technologies, Inc.
    Inventor: Eric M. Prophet
  • Patent number: 6710698
    Abstract: A semiconductor fuse for electrical consumers (2) is disclosed, in which a semiconductor switch (3) is disposed between the battery (1) serving as a current- or voltage source and the consumer (2). Parallel to the semiconductor switch (3), there is a short circuit-proof bypass (4) with an integrated wakeup circuit (5), which cooperates with the semiconductor switch (3).
    Type: Grant
    Filed: June 4, 2002
    Date of Patent: March 23, 2004
    Assignee: Robert Bosch GmbH
    Inventors: Joerg Jehlicka, Arndt Wagner
  • Publication number: 20040022005
    Abstract: A radiation hardening circuit that includes two series-connected transistors that can replace any single transistor in a circuit. The hardening circuit includes a resistor that has a first node and a second node, a first transistor having a source terminal, a gate terminal, a drain terminal, and a body terminal. The first node of the resistor may be conductively connected to the drain terminal of the first transistor and the second node of the resistor is conductively connected to the body terminal of the first transistor. The hardening circuit also includes a second transistor in series with the first transistor, driven so that both transistors are off or on at any given time. The circuit is resistant to radiation-induced events due to the body bias of the first transistor, the off state of the second transistor, and the current limiting effect of the resistor.
    Type: Application
    Filed: May 30, 2003
    Publication date: February 5, 2004
    Applicant: Honeywell International Inc.
    Inventor: David O. Erstad