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Plural switches

Subclass of:

307 - Electrical transmission or interconnection systems

307112000 - SWITCHING SYSTEMS

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
307115000 Selectively actuated 58
307114000 Lazy-man switch type 4
20100079006Three-way and four-way switching circuit - A three-way or four-way switching circuit for lighting, and the like, is described. One three-way switch is replaced with an electronic switch. Both legs of the switching circuit are powered all the time and current is sensed in the legs to determine when one of the three-way or four-way switches has been switched. This information is used to turn the light on and off.04-01-2010
20100176661COMMUNICATIONS IN MULTIPLE-SWITCH ELECTRICAL CIRCUITS - A system, device and method to allow communications between switches in an electrical circuit containing three-way and four-way switches. The system, device and method allow any switch in an electrical circuit using conventional wiring for three-way and four-way switches to indicate when voltage is being supplied to the electrical load device in the electrical circuit; if a dimmer is present in the electrical circuit, to indicate the dim level of the load device in the electrical circuit and to command to dim level from any switch; and if a timer is present, to allow any switch to provide a warning indication prior to the timer shutting off the load device, and to allow any switch to reset the timer, preventing the shutoff.07-15-2010
20110074222Multiple Location Load Control System - A multiple location load control system comprises a main device and remote devices, which do not require neutral connections, but allow for visual and audible feedback at the main device and the remote devices. The main device and the remote devices are adapted to be coupled in series electrical connection between an AC power source and an electrical load, and to be further coupled together via an accessory wiring. The remote devices can be wired on the line side and the load side of the load control system, such that the main device is wired “in the middle” of the load control system. The main device is operable to enable a charging path to allow the remote devices to charge power supplies through the accessory wiring during a first time period of a half-cycle of the AC power source. The main device and the remote devices are operable to communicate with each other via the accessory wiring during a second time period of the half-cycle.03-31-2011
20110316350THREE-WAY AND FOUR-WAY SWITCHING CIRCUIT - A three-way or four-way switching circuit for lighting, and the like, is described. One three-way switch is replaced with an electronic switch. Both legs of the switching circuit are powered all the time and current is sensed in the legs to determine when one of the three-way or four-way switches has been switched. This information is used to turn the light on and off.12-29-2011
Entries
DocumentTitleDate
20080258564Switching mode power supply and switch thereof - A switching mode power supply and a switch thereof are provided. The switch includes a plurality of first transistors, and a second transistor that is turned on/off by a control signal that is equal to that of the plurality of first transistors and in which a second current corresponding to a first current flowing to the plurality of first transistors flows, wherein a ratio of the first current to the second current sequentially changes from a time point at which the second transistor is turned on. Therefore, a switching mode power supply and a switch thereof that can always uniformly sustain a maximum limit current flowing to the switch regardless of a level of an input voltage without including a special additional circuit can be provided.10-23-2008
20090167096Pulse Width Modulation For Precision Energy/Power Dumping - Accordingly, an energy dumping system for an electric component system is provided. The energy dumping system includes a power consuming element that consumes excess energy of the electric component system and dissipates the excess energy as heat. A solid state switch selectively permits energy of the electric component system to flow across the power consuming element. A control module is operable to monitor a voltage of the electric component system and apply a pulse width modulated (PWM) signal to the solid state switch to selectively control energy of the electric component system to flow across the power consuming element.07-02-2009
20100045115SWITCHING CIRCUIT, SIGNAL OUTPUT DEVICE AND TEST APPARATUS - A test apparatus for a device under test (DUT) that includes a signal output device that outputs a signal according to a test signal and a detecting section that detects a signal output from the DUT that outputs a detection result. The signal output device includes an output port, a high-voltage side switching circuit between a first terminal and a second terminal, a low-voltage side switching circuit between a first terminal and a second terminal, and a control section that outputs the first and second control signals. Each of the high-voltage and the low-voltage side switching circuits include a plurality of switching devices serially connected between the first and second terminals. The plurality of switching devices are opened substantially in synchronization with each other, such that a voltage inputted to the first terminal is outputted from the second terminal by short-circuiting between the first and second terminals.02-25-2010
20130038140SWITCHING CIRCUIT - Provided is a switching circuit including an arm having two switching elements connected. The switching elements are SiC semiconductors, and when a commutation current flows to the reverse conducting element, the switching element having the reverse conducting element connected in parallel thereto is turned on.02-14-2013
20120181877Configuration and method for activating at least one triggering element for a passenger protection means - A circuit configuration for activating a triggering element for a passenger protection arrangement includes a high-side circuit which establishes a first connection between an energy source and the triggering element, and a low-side circuit which establishes a second connection between the triggering element and ground. In addition, a regulator, which regulates a triggering current for the triggering element is provided, the regulator being assigned to the high-side circuit and/or the low-side circuit, and the high-side circuit and/or the low-side circuit each have/has two output stages, which are connected in parallel, for regulating the triggering current per triggering element, at least one of the at least two output stages having a current regulator at least one transistor connected in parallel.07-19-2012
20130057084HALL PLATE SWITCHING SYSTEM - Disclosed herein is a hall plate switching system including: a hall plate that generates first hall voltage at both ends of a first node and a third node facing each other and generates second hall voltage at both ends of a second node and a fourth node facing each other; a first switch unit that is connected with the first node and the second node and controls on/off of current flowing in the first node and the second node; a second switch unit that is connected with the third node and the fourth node and controls on/off of current flowing in the third node and the fourth node; and a resistor unit that is connected with the second switch unit and reduces trans-conductance of the first switch unit and the second switch unit.03-07-2013
20120112558INPUT DEVICE AND METHOD FOR DETECTING SWITCH OF INPUT DEVICE - An input device includes a resistor group, an input terminal, a plurality of switches, and a control unit. The resistor group includes a plurality of resistors connected in series. The input terminal is connected to one end of the resistor group. Each switch of the plurality of switches has one end connected to each resistor of the plurality of resistors at an opposite side viewed from the input terminal and the other end grounded. The control unit detects an applied voltage to the input terminal when the plurality of switches are all turned off. Furthermore, the control unit detects an output voltage from the input terminal when any of the plurality of switches is turned on, and detects a switch that is turned on among the plurality of switches based on a voltage ratio of the output voltage to the applied voltage.05-10-2012
20130062969COMPACT AND VOLTAGE STABLE AUTOMATIC CHANGE OVER SWITCH - A voltage-stabilizing automatic change-over switch (03-14-2013
20120286587Intelligent Control System for High-Voltage Switch and Control Method Thereof - An intelligent control system for a high-voltage switch and a control method thereof. The control system includes a control terminal (11-15-2012
20090206677HIGH VOLTAGE SWITCHING DEVICE - A modulator switch composed of stacks of high voltage switching devices connected in series are fired substantially simultaneously to provide pulsed, high voltage switching capable of providing megajoules of energy. The switching devices are fired by a trigger box that is clocked to provide a pulsed signal to each of the switching devices. The trigger box generally consists of a triggering or driver circuit and a pulse generating circuit. These circuits are electrically isolated from one another using suitable shielding and spacing. The pulsed output of the trigger box is fed to the switching devices across low inductance twisted cabling that is passed through toroidal transformers connected to the inputs of the switching devices. Varistors are clamped across each stack of switching devices to provide over-voltage protection for the switching devices.08-20-2009
20110291493Switching device and system with switching device - A switching device switches at least one current phase between responsive current phase input and responsive current phase output, wherein the switching device is suitable for switching electrical current of a power circuit of an electric motor. The switching device further includes a first communication system interface for a first communication system, a second communication system interface for a second communication system, and a selecting unit for selecting whether the switching device is a master or slave in relation to the second communication system.12-01-2011
20120139361METHOD AND APPARATUS FOR REDEFINING ELECTRICAL POWE SYSTEM WIRING - Methods and apparatus detect wiring error(s), identify to the user what wiring error has been detected, and redefine the wiring configuration. An indication is provided to the user that the apparatus has redefined the wiring configuration. Steps may be automated and/or initiated by the user.06-07-2012
20090195080POWER OVER ETHERNET POWER SOURCING EQUIPMENT ARCHITECTURE FOR VARIABLE MAXIMUM POWER DELIVERY - A power over Ethernet (PoE) power sourcing equipment (PSE) architecture for variable maximum power delivery. PoE PSE subsystems rely on some control to “turn on” a power field effect transistor (FET), which allows current to be transmitted to a powered device (PD). A hybrid approach is provided where an internal FET can be augmented with an external FET to provide an architecture that can be flexibly applied to applications with various space, cost and cooling limitations. The maximum delivered power can also be boosted with the addition of an external FET to the internal FET.08-06-2009
20120293013WIRELESS OCCUPANCY SENSING WITH PORTABLE POWER SWITCHING - A system may include a wireless receiver to receive a wireless signal from an occupancy sensor and at least one power switch to control power to at least one load in response to the wireless signal, where the wireless receiver and power switch are included in a local switching device, and where the local switching device comprises a power pack having a housing, a power supply to convert high-voltage power to a low-voltage source for operating internal circuitry in the power pack, and switch control logic to implement an unoccupied delay time.11-22-2012
20080238213SWITCHING CIRCUIT, SIGNAL OUTPUT DEVICE AND TEST APPARATUS - There is provided a switching circuit that opens or short-circuits between a first terminal and a second terminal in accordance with a control signal. The switching circuit includes a plurality of switching devices that is serially connected between the first terminal and the second terminal and each of which is opened or short-circuited in accordance with a provided control voltage, and a plurality of control circuits that is provided one-to-one corresponding to the plurality of switching devices, each of which provides a control voltage according to the control signal to the corresponding switching device, and that opens and short-circuits the plurality of switching devices in synchronization with each other.10-02-2008
20090167097PHOTOVOLTAIC INVERTER INTERFACE DEVICE, SYSTEM, AND METHOD - A photovoltaic system, method and apparatus are disclosed. In an exemplary embodiment, the system includes a first and second inputs adapted to couple to a first and second rails of a photovoltaic array; an inverter configured to convert DC power from the photovoltaic array to AC power; and an interface portion coupled to the first and second inputs and the inverter, the interface portion configured to isolate at least one of the first and second inputs from the inverter and to modulate an application of a voltage from the photovoltaic array to the inverter so as to increase a load on the photovoltaic array and to reduce the voltage applied from the photovoltaic array to the inverter.07-02-2009
20080303352AUTOMATIC CHARGING AND POWER MANAGEMENT DEVICE - An automatic charging and power management device includes a charging control unit and at least one power switching control unit. The charging control unit is connected to a rechargeable battery and an input power source to control the charging operation to the rechargeable battery. The input power source can be a USB-interfaced power source or a rectification transformer based power source. The power switching control unit connects the input power source and is provided with at least one power input terminal, a charging control terminal, a charging voltage terminal, a system actuation switch, a system actuation terminal, a power type terminal, and at least one power output terminal. The charging control terminal and the charging voltage terminal are connected to the charging control unit. The system actuation terminal is actuated on/off by the system actuation switch to generate a system actuation signal. The power type terminal generates an identification signal based on the type of the input power source. The charging control unit is automatically switched between charging the rechargeable battery and supplying an output power through the power output terminal in response to the status of the power input terminal, the system actuation terminal, the power type terminal, and the charging voltage terminal.12-11-2008
20080246342Electrical Switching Device Arrangement - An electric switching device arrangement has a switching section consisting of at least one first and one second switching point which are electrically connected in series by a conductor section used therefor. In order to compensate external vibrations effecting the electric switching device arrangement provided with the switching section, the conductor section consists of at least two bend slackening conductor elements which are connected to each other by way of a rigid connecting element. The elongated length of the conductor elements is greater than a distance along a straight line between contact points of the switching points.10-09-2008
20080238214SWITCH GEAR CELL AND CONVERTER CIRCUIT FOR SWITCHING A MULTIPLICITY OF VOLTAGE LEVELS WITH A SWITCHGEAR CELL SUCH AS THIS - A switchgear cell having a group of connection is disclosed, with the group of connection having a first and a second controllable bidirectional power semiconductor switch and a capacitor. In order to reduce the stored electrical energy and to save space, the group of connection can have a third, fourth, fifth and sixth controllable bidirectional power semiconductor switch and the first controllable bidirectional power semiconductor switch can be connected back-to-back in series with the second controllable bidirectional power semiconductor switch, the third controllable bidirectional power semiconductor switch can be connected back-to-back in series with the fourth controllable bidirectional power semiconductor switch, the capacitor can be connected to the connection point of the first controllable bidirectional power semiconductor switch to the second controllable bidirectional power semiconductor switchand to the connection point of the third controllable bidirectional power semiconductor switch) to the fourth controllable bidirectional power semiconductor switch, the fifth controllable bidirectional power semiconductor switch can be connected to the connection point of the first controllable bidirectional power semiconductor switch to the second controllable bidirectional power semiconductor switch, and to the fourth controllable bidirectional power semiconductor switch, and the sixth controllable bidirectional power semiconductor switch can be connected to the connection point of the third controllable bidirectional power semiconductor switch to the fourth controllable bidirectional power semiconductor switch and to the second controllable bidirectional power semiconductor switch.10-02-2008
20090079273SWITCHING CIRCUIT APPARATUS HAVING A SERIES CONDUCTION PATH FOR SERVICING A LOAD AND SWITCHING METHOD - A circuit for servicing a load connectable with a power supply is disclosed. The circuit includes a plurality of three-terminal switches and one control supply. The three-terminal switches define a series conduction path connectable between the power supply and the load. Each of the plurality of three terminal switches includes a source terminal, a drain terminal, and a gate terminal. The control supply is productive of a control voltage and in power connection between the gate terminal and source terminal of each of the plurality of three-terminal switches. Each of the plurality of three-terminal switches is responsive to the control voltage at its respective gate terminal to close a connection between the respective source terminal and respective drain terminal of each of the plurality of three-terminal switches.03-26-2009
20130214616TRANSMISSION LINE PULSING - A circuit and method for electrostatic discharge testing using transmission line pulsing. A plurality of transmission line networks may be connected to a device under test, and each transmission line network may have different connected terminations. Switches may be used to select which transmission line networks are connected to the device under test, and which terminations, if any, are connected to transmission line networks.08-22-2013
20090243399ELECTRICAL POWER SUPPLY ARRANGEMENT FOR A DOWNHOLE MEASUREMENT ASSEMBLY - A downhole measurement assembly comprising a metal casing housing a plurality of tool sections, one of which includes a detector sensitive to a magnetic field, and a DC power supply for said tool sections, the power supply and the tool sections being electrically connected to the casing, characterised in that the power supply is connected to at least one tool section via a switching circuit and a conductor arrangement, the switching circuit comprising a capacitor, a plurality of switches and control means operative alternately to charge the capacitor from the DC supply and discharge the capacitor through said at least one tool section using the conductor arrangement so as to inhibit the generation of an electromagnetic field in the conductor arrangement between the capacitor and the said at least one tool.10-01-2009
20090039711Dual-Polarity Multi-Output DC/DC Converters and Voltage Regulators - A two-output dual polarity inductive boost converter includes an inductor, a first output node, a second output node, and a switching network, the switching network configured to provide the following modes of circuit operation: 1) a first mode where the positive electrode of the inductor is connected to an input voltage and the negative electrode of the inductor is connected to ground; 2) a second mode where the positive electrode of the inductor is connected to the first output node and the negative electrode of the inductor is connected to the second output node; and 3) a third mode where the positive electrode of the inductor is connected to the input voltage and the negative electrode of the inductor is connected to the second output node.02-12-2009
20090115255MICRO-ELECTROMECHANICAL SYSTEM BASED SWITCHING - A current control device is disclosed. The current control device includes control circuitry integrally arranged with a current path and at least one micro electromechanical system (MEMS) switch pair disposed in the current path. The current control device further includes a hybrid arcless limiting technology (HALT) circuit connected in parallel with the at least one MEMS switch pair facilitating the opening of the at least one MEMS switch pair.05-07-2009
20090218890Robust semiconductor power devices with design to protect transistor cells with slower switching speed - This invention discloses a power switch that includes a fast-switch semiconductor power device and a slow-switch semiconductor power device controllable to turn on and off a current transmitting therethrough. The slow-switch semiconductor power device further includes a ballasting resistor for increasing a device robustness of the slow switch semiconductor power device. In an exemplary embodiment, the fast-switch semiconductor power device includes a fast switch metal oxide semiconductor field effect transistor (MOSFET) and the slow-switch semiconductor power device includes a slow switch MOSFET wherein the slow switch MOSFET further includes a source ballasting resistor.09-03-2009
20090051225GATE DRIVING SCHEME FOR DEPLETION MODE DEVICES IN BUCK CONVERTERS - A circuit for driving a switching stage including control and sync switches series connected at a switching node, at least one of the control and sync switches being a normal ON depletion mode device, the circuit comprising a gate driver including first and second switching stages for generating gate drive signals for the sync and control switches, respectively, the first switching stage having a first driver output node and the second switching stage having a second driver output node, a signal from the first node driving the sync switch and a signal from the second node driving the control switch and a circuit connected to the first and second switching stages, the circuit including a first circuit providing a first voltage source, the first circuit being coupled to the first switching stage and to the sync switch, a first bias voltage from the first voltage source being switched by the first switching stage, the first switching stage having a first state wherein the sync switch is on, and a second state wherein the first bias voltage is switched to the gate of the sync switch to turn the sync switch off and a second circuit including a first energy storage device for charging with a second bias voltage, the second switching circuit having a first state, wherein the control switch is on when the sync switch is off and having a second state wherein the control switch is switched off when the sync switch is on by switching the second bias voltage to the gate of the control switch.02-26-2009
20120200171CONTROL DEVICE - A control unit of an uninterruptible power supply device includes a PWM circuit generating a plurality of PWM signals controlling a plurality of IGBT elements of a power conversion unit 08-09-2012
20100213771Electronic Device and Printing Device - An electronic device controlled by software, includes a first switch that shuts off electric power supplied via a first supply line in accordance with operation by a user; a second switch that shuts off electric power supplied via a second supply line in accordance with control by the software; and a delay circuit that outputs an instruction signal for shutting off electric power supplied via the second supply line to the second switch after a first delay time which is longer than a time required for a termination process of the electronic device has passed when the first switch shut off electric power supplied via the first supply line, wherein the delay circuit stores, as a setting value, a second delay time which is shorter than the time required for the termination process of the electronic device at a time of startup of the electronic device.08-26-2010
20090309426POWER MANAGEMENT SYSTEM HAVING CHARGING CONTROL UNIT AND POWER SWITCHING CONTROL UNIT - A power management system is described. The power management system includes an input power selecting unit, a charging control unit and a power switching control unit. The input power selecting unit receives a plurality of input power sources for selecting one of the input power sources to be inputted to the electronic apparatus. The charging control unit includes a charging controller and a battery. The charging controller receives a charge-enabling signal. The battery is charged by a second voltage and selectively supplies a battery power. The power switching control unit outputs a driving voltage to drive the electrical apparatus based on an adaptor-enabling signal and a power-detecting signal when the power switching control unit switches the input power sources and the battery power to select one of the input power sources and the battery power. The power switching control unit actuates the charging control unit by the adaptor-enabling signal and a system-enabling signal for charging the battery by the second voltage generated from one of the input power sources.12-17-2009
20120306288SWITCHING CIRCUIT - A switching circuit according to one embodiment includes first to fourth semiconductor switch elements. A pulse-like signal is applied to each input terminal of the switch elements such that when the first and fourth switch elements are in an ON (OFF) state, the remaining switch elements are in an OFF (ON) state. The switching circuit includes first and second capacitance elements. The first capacitance elements connected between an output terminal of the second semiconductor switch element and the second capacitance elements connected between an input terminal of the second semiconductor switch element and an output terminal of the fourth semiconductor switch element has a capacitance to reduce a parasitic capacitance between the input and output terminals of each of the fourth and second switch elements at a frequency N times (N is an integer of 1 or more) as high as a clock frequency of the pulse-like signal.12-06-2012
20120013199METHOD FOR OPERATION OF A CONVERTER CIRCUIT AND APPARATUS FOR CARRYING OUT THE METHOD - A method and apparatus are provided for operation of a converter circuit, which includes a converter unit having a multiplicity of controllable power semiconductor switches, and which is connected via a transformer to a three-phase electrical AC voltage power supply system. The method includes controlling the controllable power semiconductor switches by means of a control signal which is formed from a regulating signal. In order to damp oscillations of a power supply system voltage above the fundamental frequency, a filtered power supply system current is formed by filtering a power supply system current using a low-pass filter characteristic. A filtered transformer inductance voltage is formed by filtering a transformer inductance voltage, which is formed from the power supply system current, using a low-pass filter characteristic. A filtered power supply system voltage is formed by filtering a power supply system voltage using a low-pass filter characteristic. The regulating signal is formed by addition of a regulator voltage, the filtered transformer inductance voltage, and the filtered power supply system voltage, where the regulator voltage is formed by regulating the filtered power supply system current at a power supply system current nominal value.01-19-2012
20080272657User Selectable Pin for Connection of an Internal Regulator to an External Filter/Stabilization Capacitor and Prevention of a Current Surge Therebetween - An integrated circuit device provides a choice of external pins (connections) that may be user selectable for coupling an external filter/stabilization capacitor to an internal voltage regulator. However, connecting the output of a internal voltage regulator to an uncharged external filter/stabilization capacitor (or to a capacitor charged to a different voltage level than the internal regulation voltage) through a low impedance path can cause the regulator output voltage to sag/spike if the internal voltage regulator tries to charge/discharge the capacitor up/down to equilibrium with the regulator output voltage. To minimize this potential sag/spike, the voltage on the external filter/stabilization capacitor may be adjusted in a controlled manner to substantially the same voltage as the voltage on the output of the internal voltage regulator, and then the internal voltage regulator is operationally coupled through a low impedance to the external regulator filter/stabilization capacitor.11-06-2008
20110181124BREAKER AND POWER MONITORING SYSTEM - A breaker is provided including a plurality of branch breakers. The plurality of branch breakers each include: a current measuring section configured to measure a current flowing through an internal power line; a radio communicating section configured to transmit a measured value of the current measuring section to an information processing device by radio; and a power supply section configured to supply power to the radio communicating section.07-28-2011
20120212075Programmable gate controller system and method - Controlling power switches with a programmable gate controller system proximate associated power switches and remote from the central controller including sensing at least one predetermined condition local to the associated power switches; reporting the sensed conditions to the remote programmable gate controller system; developing, in response to the sensed condition at least one control signal in the remote programmable gate controller system; and applying the control signal to the associated power switches08-23-2012
20100052434SWITCHGEAR CELL FOR SWITCHING FIVE OR MORE VOLTAGE LEVELS - A switchgear cell is disclosed for switching n switching voltage levels, where n is an odd number of 5 or greater (i.e., n=5, 7, 9, . . . ,) is specified. The switchgear cell includes a first and a second branch circuit, wherein each branch circuit includes n-1 series-connected power semiconductor switches and p=n-2 power semiconductor switch junction points among the series-connected power semiconductor switches of each branch circuit. An intermediate circuit includes a first and a second capacitance, the first capacitance being connected to a power semiconductor switch junction point having an odd counting number x of the first branch circuit when the power semiconductor switch junction points can be counted starting with an odd counting number x from the first end to the second end of a respective branch circuit. The second capacitance is connected to a power semiconductor switch junction point of the second branch circuit. A power semiconductor switch of the intermediate circuit is connected to a power semiconductor switch junction point having a counting number x<(p+1)/2 of the first or second branch circuit or to the first end. Alternatively, the intermediate circuit includes a capacitance connected to a power semiconductor switch junction point having a counting number x<(p+1)/2 of the first and second branch circuits, and a power semiconductor switch connected to a power semiconductor switch junction point having a counting number x<(p+1)/2 of the first or second branch circuit. Another power semiconductor switch of the intermediate circuit is connected to a power semiconductor switch junction point having a counting number x≦(p+1)/2 of the first or second branch circuit, and is not directly connected to the capacitance of the intermediate circuit.03-04-2010
20100052433CIRCUIT ARRANGEMENT, SWITCH DEVICE, AND METHOD FOR CURRENTLESS SWITCHING OF A POWER CIRCUIT OF A CIRCUIT ARRANGEMENT - The present invention relates to a circuit arrangement, having a power circuit and a control circuit, in which the power circuit with the control circuit is activatable and deactivatable, and the power circuit is activatable only when the power circuit is switched on and is deactivatable only as long as the power circuit is switched on. The present invention further relates to a switch device, which includes an actuator as well as a first switch for switching a power circuit and a second switch for switch a control circuit of a circuit arrangement, in which the first switch and the second switch are switchable by actuation of the actuator, and the second switch is switchable only when the first switch is switched. The present invention also relates to a method by which a power circuit of a circuit arrangement, is activatable or deactivatable, in which the circuit arrangement includes the power circuit and a control circuit, and the power circuit is switched on before it is activated by switching on of the control circuit. The present invention also relates to a handheld electric power tool, including a switch device.03-04-2010
20120175971GAS INSULATED SWITCHGEAR - A gas insulated switchgear is configured including phase-A, phase-B, and phase-C breaker units. For example, the phase-A breaker unit includes breakers connected in series in a horizontal first direction, disconnectors annexed on the breaker, disconnectors annexed on a breaker, and disconnectors annexed on a breaker. The disconnector is connected to a main bus that extends in the first direction, and the disconnector is connected to a main bus that extends in the first direction. Each of the disconnectors on the breakers is arranged while a longitudinal direction thereof is set to a second direction orthogonal to the first direction so that a switching direction of the disconnector is equal to the second direction. Thereby, the length of the main buses can be shortened, and an interphase distance and a breaker-to-breaker distance can be reduced.07-12-2012
20120074791SUPPLY CIRCUIT FOR SUPPLYING A SWITCH CIRCUIT - To improve energy efficiencies, supply circuits (03-29-2012
20120262008SWITCHING ELEMENT SYSTEM AND METHOD - A 2×2 switching element that includes first and second relays each having a first terminal, a second terminal and a third terminal, wherein the first and second relays each operate between a first state to connect the first terminal to the second terminal and a second state to connect the first terminal to the third terminal. The second terminals and third terminals, respectively, of the first and second relays are coupled to one another. The 2×2 switching element is selectively operable between: a first switching state where the first relay is operated in the first state and the second relay is operated in the second state, and a second switching state where the first relay is operated in the second state and the second relay is operated in the second state.10-18-2012
20120262007SWITCH MATRIX MODELING SYSTEM AND METHOD - A method that includes identifying a desired signal connectivity through a switch matrix, where the switch matrix includes a plurality of switching elements, and where the switching elements are selectively operable in a plurality of states to provide a plurality of signal paths for routing signals through the switch matrix. The method also includes identifying a sorting network model that corresponds to a topology of the switch matrix, applying a sorting algorithm to the sorting network model, and determining, based on the results of applying the sorting algorithm, operational states of the plurality of switching elements to provide signal paths corresponding to the desired signal connectivity.10-18-2012
20120228962POWER SUPPLY SELECTOR AND METHOD FOR MINIMIZING AN INRUSH CURRENT IN A POWER SUPPLY SELECTOR - A method for minimizing an inrush current in a power supply selector and a power supply selector system is provided. The power supply selector includes a plurality of power input nodes, a power output node, a first transistor and a second transistor. Each of the power input nodes may be coupled to a first switch having a first on-resistance and to a second switch having a second on-resistance. The second on-resistance is greater than the first on-resistance. The first switch and the second switch are preferably coupled in parallel. The power supply selector may be configured to couple a selected one of the power input nodes to the source of the first transistor and to the gate of the second transistor so as to sense a sense voltage at the selected power input node.09-13-2012
20120299393DEVICE AND METHOD TO BREAK THE CURRENT OF A POWER TRANSMISSION OR DISTRIBUTION LINE AND CURRENT LIMITING ARRANGEMENT11-29-2012
20120262009SWITCH MATRIX SYSTEM AND METHOD - A switch system having a plurality of switch inputs, a plurality of switch outputs, a switch matrix comprising a plurality of N×N switching elements to selectively couple one or more of the plurality of switch inputs to one or more of the plurality of switch outputs during use to provide one or more paths for routing signals from one or more of the switch inputs to one or more of the switch outputs during use.10-18-2012
20110037323AUTOMATIC SWITCH CONFIGURATION - A system including an input and a controller. The input is configured to receive a switch signal from multiple different types of switches. The controller coupled to the input and can determine the type of the switch by an analysis of the switch signals received from the switch through the input.02-17-2011
20120139362Fail-Safe Switching Module - A fail-safe switching module having a first switching device and a second switching device, the first and second switching devices being configured to switch a load by a switching-on device, a first temperature sensor being arranged on the first switching device and a second temperature sensor being arranged on the second switching device. The first switching device is arranged in series with first and second switching-off devices, and the second switching device is arranged in series with third and fourth switching-off devices. The first switching-off device and the third switching-off device are configured to react to the first temperature sensor. The second and fourth switching-off devices are configured to react to the second temperature sensor to switch off the first and second switching devices in the event of an overtemperature of the first switching device or the second switching device.06-07-2012
20130009491SWITCHING MODULE FOR USE IN A DEVICE TO LIMIT AND/OR BREAK THE CURRENT OF A POWER TRANSMISSION OR DISTRIBUTION LINE - A switching module, intended to be used in a medium or high voltage DC breaker or a DC current limiter, includes at least one power semiconductor switching element, a gate unit arranged to turn the at least one power semiconductor switching element on and off, respectively, according to a switching control signal, and an energy storage capacitor arranged to provide power to a power supply input of the gate unit. The switching module further includes a power transformation device arranged to receive an optical power signal, to transform the optical power signal into an electrical power signal and to provide the electrical power signal to the energy storage capacitor.01-10-2013
20130020881CIRCUIT ARRANGEMENT AND METHOD FOR INTERRUPTING A CURRENT FLOW IN A DC CURRENT PATH - A DC current path for DC power transmission includes at least a first switching element and a second switching element connected in series. A resonance circuit is configured to be connectable in parallel to the series connection of the at least one first switching element and second switching element by means of a switch.01-24-2013
20120242169ELECTRIC CIRCUIT CONFIGURATION FOR SWITCHING AN ELECTRICAL LOAD - The invention relates to an electric circuit configuration for switching an electrical load (09-27-2012
20130113301SAFETY CONTROL SYSTEM - A safety control system is provided, which is capable of monitoring many more drive circuits by using a single controller without modifying the configurations of the controller and the drive circuit. An a-contact of a relay is electrically connected between a FB (feedback) output terminal and a FB input terminal of a safety controller. A b-contact of the relay is electrically connected between a signal output terminal (safety output (05-09-2013
20130119782ELECTRIC POWER SOURCE CIRCUIT AND ABNORMALITY DIAGNOSIS SYSTEM - A control unit for a rotary electric machine includes a first current command module, a second current command module, a change module, and a return module. The first module performs a first current command on a maximum efficiency characteristic line on a d-q plane thereby to drive the machine at a maximum efficiency. The second module performs a second current command on a switching line set at a retard angle side relative to the maximum efficiency characteristic line. The change module changes a control mode from a rectangular wave voltage phase control mode to an overmodulation current control mode when an operation point of the machine reaches the switching line. The return module returns the current command from the second command to the first command after performance of the second command for a predetermined period.05-16-2013
20100314948Impedance-Based Power Supply Switch Optimization - In one embodiment, a power gated circuit block includes power switches that couple at least one of the power supply grids within the block to the global power supply grids of the integrated circuit. The power switches receive an enable that indicates whether or not the power gated block is enabled or disabled. If the power gated block is enabled, the power switches are turned on and electrically connect the global power supply grid with the internal (or local) power supply grid; otherwise the power switches electrically isolate the local power supply grid from the global power supply grid. The power switches are physically distributed over an area occupied by the power gated block, including near an edge of the area. The number of power switches near the edge is greater than the number of switches included at other locations in the area to provide a worst case impedance experienced at points throughout the area that is approximately equal.12-16-2010
20130154392SYSTEM FOR BYPASSING AND ISOLATING ELECTRICAL POWER CELLS - An electrical power cell system including first and second electrical power cells having first and second terminals, one or more transient voltage suppressors connected in parallel with a relay, the relay having two states, the first state of the relay connects the first and second electrical power cells in series, and the second state of the relay bypasses the first electrical power cell so that the first electrical power cell is not connected in series with the second electrical power cell.06-20-2013

Patent applications in class Plural switches

Patent applications in all subclasses Plural switches