Class / Patent application number | Description | Number of patent applications / Date published |
361057000 | Current responsive | 59 |
20080218921 | Control Circuit with Reduced Load for a Bypass Switch - The invention relates to a control circuit for controlling the power supplied from a power source to an electromotor, whereby the control circuit comprises a semiconductor switching element connected in series to the electromotor and the power source for controlling the power supplied to the electromotor and operating means connected to the semiconductor switching element for controlling the semiconductor switching element, whereby the operating means are arranged for controlling the semiconductor switching element when the control range of the semiconductor switching element is exceeded for at least a moment in a fully conducting state. Because the current reaches this value for at least a moment, the switch no longer has to interrupt a relatively large current. | 09-11-2008 |
20080253047 | Semiconductor Device and Electronic Device - In a semiconductor device, a problem of heat generation and power loss is alleviated, and the semiconductor device is protected against the failure due to the overcurrent. The semiconductor device includes an IC chip having a large-current output. In the IC chip a measuring terminal is electrically connected with a first pad via a gold wire. A potential difference generated by the impedance of the gold wire is compared with a predetermined value. When the potential difference exceeds the predetermined threshold level, the semiconductor device operates to turn off a PMOS-type transistor. | 10-16-2008 |
20090021874 | A METHOD OF PROVIDING A SECONDARY MEANS OF OVERLOAD PROTECTION AND LEAKAGE CURRENT PROTECTION IN APPLICATIONS USING SOLID STATE POWER CONTROLLERS - The present invention provides an overload protection circuit having a first switch connected at a first side to a source of electrical power and at a second side to a load, the switch having on and off modes and a second switch connected between the first switch second side and ground, the second switch having on and off modes. A control module generates at least one signal controlling the first switch mode and the second switch mode wherein the signal turns the second switch to the off mode when turning the first switch to the on mode and the signal turning the second switch to an on mode when turning the first switch to the off mode. Both over current and leakage protection are thereby achieved. | 01-22-2009 |
20090135536 | OVER-CURRENT PROTECTION IN LINEAR REGULATORS - An integrated circuit radio transceiver and method therefor includes a linear regulator an output transistor for producing a current into an output node of the regulator wherein an amplification block is operable to produce a bias signal to a gate terminal of the output transistor to operably bias the output transistor to produce the current into the output node of the regulator. A current steering amplification block is operably disposed to steer current in/out of the gate of the output transistor (depending on device type) based upon the current being conducted through the output node of the regulator exceeding a specified threshold. The current steering amplification block further includes a current sinking element operably disposed to sink a specified amount of current to define the specified threshold. | 05-28-2009 |
20090147421 | CURRENT-LIMITING CIRCUIT WITH AT LEAST TWO VOLTAGE TAPS - A current-limiting circuit, which limits an electrical current from a voltage source to a consumer to a predetermined maximum current. At least one measuring resistor ( | 06-11-2009 |
20090213509 | SYSTEM AND METHOD FOR MITIGATING AN ELECTRICAL ARC FAULT - A method and apparatus for mitigating arc faults in a power generation system includes reducing and/or eliminating voltage when an arc is present, to protect the system from associated damage. | 08-27-2009 |
20090279220 | SEMICONDUCTOR DEVICE PACKAGE WITH INTERNAL DEVICE PROTECTION - An integral impedence is formed on or within a lead frame pin of a semiconductor package and receives a connection from an electrode of a semiconductor die within the package to eliminate the need for adjustment and protective impedences external of the package. The impedence comprises passives such as resistors, capacitors, diodes or inductors which modify the performance of the package for new semiconductor device characteristics. The impedences may have positive or negative temperature coefficients and are in close thermal communication with the semiconductor die. | 11-12-2009 |
20090323239 | METHOD AND APPARATUS FOR BALANCING CURRENT THROUGH AN INTERRUPT DEVICE - Systems and methods are provided for balancing current through a first conductor and a second conductor. A method comprises determining if a first current through the first conductor is greater than a second current through the second conductor by more than a threshold value. The first current and the second current are received from a ground fault current interrupt device. The method further comprises increasing the second current in response to determining that the first current is greater than the second current by more than the threshold value. | 12-31-2009 |
20100067156 | ELECTRICAL BARRIER - An electrical barrier for connecting a power supply to electrical equipment to be used in a potentially explosive area. The barrier includes a shunt zener diode for limiting the output voltage and a series resistance for limiting the current. In the arrangement shown, the shunt zener diode is a silicon carbide zener diode which has a higher resistance to large output current and/or operating temperature than zener diodes fabricated commercially. | 03-18-2010 |
20100277842 | INPUT/OUTPUT BUFFER AND ELECTROSTATIC DISCHARGE PROTECTION CIRCUIT - A buffer device includes a first driving circuit coupled between a signal terminal of the buffer device and a first reference potential, a current-limiting component including a first terminal coupled to the signal terminal, and a second driving circuit coupled between a second terminal of the current-limiting component and a second reference potential, wherein the current-limiting component limits an amount of ESD current flowing through the second driving circuit, and makes an amount of ESD current flowing through the first driving circuit be larger than the amount of ESD current flowing through the second driving circuit. | 11-04-2010 |
20110051301 | Method for Designing Integrated Electronic Circuits Having Electrostatic Discharge Protection and Circuits Obtained Thereof - A method for designing an integrated electronic circuit ( | 03-03-2011 |
20110058294 | Protection Circuit - A protection circuit is coupled between a chipset and an I/O port. The protection circuit comprises at least two protection devices and a control device. The protection devices are coupled in parallel with each other, and coupled between the I/O port and the chipset. The protection devices receive an input signal from the I/O port. When the I/O port has a surge current thereon, the protection devices perform a discharge operation for the surge current. The control device selects one of the protection devices to transmit the input signal t the chipset. | 03-10-2011 |
20110075307 | OVERCURRENT PROTECTION CIRCUIT AND IN-VEHICLE DISPLAY DEVICE - An overcurrent protection circuit is provided. An overcurrent detecting element is connected between a power source and a load and detects an overcurrent flowing through the load. A main switch element is connected between the load and the overcurrent detecting element and controls flow of current to the load according to a voltage applied between a control end and an input end of the main switch element. The main switch element stops the flow of current to the load when a predetermined time is elapsed after the overcurrent detecting element detects the overcurrent flowing through the load. A first switch element has an output end connected to the control end of the main switch element. A current flows to the first switch when the overcurrent detecting element detects the overcurrent flowing through the load. | 03-31-2011 |
20110090610 | Circuit Arrangement - The present invention concerns a circuit arrangement ( | 04-21-2011 |
20110128658 | ESD PROTECTION APPARATUS AND ESD DEVICE THEREIN - An electrostatic discharge (ESD) protection device is provided. The ESD protection device includes a source region and a drain region. The source region is to be coupled to a low-level voltage. The drain region is disposed apart from the source region and includes a first P-type heavily doped region and at least one first N-type heavily doped region. The first P-type heavily doped region is configured to couple to a pad, and the first N-type heavily doped region is adjacent to the first P-type heavily doped region and floated. An electrostatic discharge protection apparatus is also disclosed herein. | 06-02-2011 |
20110188162 | Device for diverting surge currents or transient overvoltages - The subject matter of the invention is a device for diverting surge currents or transient overvoltages ( | 08-04-2011 |
20110188163 | ABNORMALITY DETECTION CIRCUIT, LOAD DRIVING DEVICE, AND ELECTRICAL APPARATUS - An abnormality detection circuit monitors the sink current Irnf of a H-bridge circuit and determines the presence of an abnormal state if the sink current is not detected for a predetermined time. The abnormality detection circuit includes a clock pulse generator, a counter and a NMOS transistor. The abnormality detection circuit includes a clock pulse generator arranged to generate a clock pulse of a predetermined frequency, and a counter arranged so that a count value is incremented every time the clock pulse is provided to the counter and arranged so that the count value is reset when the sink current is detected. The counter generates a first abnormality detection signal that changes from a normal logic level to an abnormal logic level when the count value reaches a predetermined value without being reset. | 08-04-2011 |
20120106012 | METHOD AND DEVICE FOR FAULT ANALYSIS AND REDUNDANCY SWITCHING IN A POWER SUPPLY FOR AN INSTRUMENT CABLE TOWED IN WATER | 05-03-2012 |
20120134060 | ELECTRONIC DEVICE WITH PROTECTION CIRCUIT - An electronic device comprises an application circuit; a first supply rail having a first electric potential; a second supply rail having a second electric potential different from the first electric potential; at least one terminal having a third electric potential, connected to the application circuit; and a protection circuit for protecting the application circuit from an injected current. The protection circuit comprises a first conductive line connected between the at least one terminal and the first supply rail, the first conductive line comprising a first switch having a first control input; and a first voltage amplifier circuit having a first input connected to the at least one terminal, a second input connected to the second supply rail and a first output connected to the first control input. | 05-31-2012 |
20120170163 | BARRIER DIODE FOR INPUT POWER PROTECTION - In one general aspect, an apparatus can include a barrier diode including a refractory metal layer coupled to a semiconductor substrate including at least a portion of a PN junction and the apparatus can include an overcurrent protection device operably coupled to the barrier diode. | 07-05-2012 |
20120188672 | PRINTED WIRING BOARD - A printed wiring board includes: a first-electrostatic-discharge-protecting pattern having a first anode pattern electrically connect to an anode of a laser diode and a first cathode pattern arranged to oppose the first anode pattern and electrically connect to a cathode of the laser diode; and a second-electrostatic-discharge-protecting pattern having a second anode pattern electrically connect to the anode of the laser diode and a second cathode pattern arranged to oppose the second anode pattern and electrically connect to the cathode of the laser diode, wherein the first-electrostatic-discharge-protecting pattern has a first soldering area at which solder is melted by a soldering iron such that the first anode and cathode patterns are short-circuited or short-circuit-released, and the second-electrostatic-discharge-protecting pattern has a second soldering area at which the solder is melted by a reflow such that the second anode and cathode patterns are short-circuited or short-circuit-released. | 07-26-2012 |
20120229942 | GATE CIRCUIT - A gate circuit includes a gate resistive element connected at one end to the gate of a power device, an on-switching device connected between a power supply and the other end of the gate resistive element, a first resistive element whose connection to the gate is controlled by a first switching device, a second resistive element whose connection to the gate is controlled by a second switching device, and having a higher resistance value than the first resistive element, excessive current suppression means for turning on the first switching device just when the current in the power device reaches a predetermined value, and turn-off delay means for, after the excessive current suppression means turns on the first switching device, turning off the on-switching device and the first switching device and turning on the second switching device to turn off the power device. | 09-13-2012 |
20120250200 | OVER-TEMPERATURE PROTECTED TRIAC AND PROTECTION METHOD - A triac circuit comprises a triac having first and second main terminals (MT | 10-04-2012 |
20120262830 | SENTINEL UNIT FOR AN IT ELECTRICAL DISTRIBUTION SYSTEM HAVING A FLOATING REFERENCE CONDUCTOR - A protection system for an IT electrical distribution system (EDS) has a floating reference conductor and two electrical conductors in the form of an active conductor and a neutral conductor. System includes two input terminals for electrically connecting to an MEN electrical power source that is upstream of system. Two output terminals are electrically connected to an electrical load in the form of an electrical motor for a compressor of an upright freezer display. A motor protection device, in the form of an MCB, electrically connects terminals to allow a supply of electrical power to a motor. The MCB is responsive to a fault signal at a port for selectively electrically disconnecting at least one of the terminals. A sentinel unit selectively generates the fault signal at port in response to the current in conductor being greater than a predetermined threshold. | 10-18-2012 |
20120281325 | Limiting Circuit - A limiting circuit has a signal input and a signal output for limiting an output signal that is present at the signal output and that can be fed to a further circuit connected to the output of the limiting circuit. A voltage connection for feeding a bias voltage and a transistor are present, wherein the gate connection of the transistor is connected to the voltage connection by means of a first matching circuit and to the signal input by means of a second matching circuit. | 11-08-2012 |
20130050887 | COMBINATION ESD PROTECTION CIRCUITS AND METHODS - Circuits, integrated circuits, apparatuses, and methods, such as those for protecting circuits against electrostatic discharge events are disclosed. In an example method, a thyristor is triggered to conduct current from a signal node to a reference voltage node using leakage currents provided by a transistor formed in a semiconductor doped well shared with the base of the thyristor. The leakage currents are responsive to a noise event (e.g., electrostatic discharge (ESD) event) at the signal node, and increase the voltage of the semiconductor doped well to forward bias the base and the collector of the thyristor. The triggered thyristor conducts the current resulting from the ESD event to the reference voltage node. | 02-28-2013 |
20130063847 | FAULT PROTECTION CIRCUIT FOR IEC 61158 FIELDBUS SPUR AND METHOD OF USING THE SAME - A fault protection circuit for use on a spur of an IEC 61158 Fieldbus network comprising a fast acting current limiter adapted to limit the spur current to the level of a reference current when the spur current reaches said reference current, control means adapted to monitor the spur AC and/or DC current and/or voltage, and isolation means adapted to apply a shunt short circuit isolation to said spur upon receipt of an activation signal from the control means, in which the control means is adapted to control the level of the reference current, and in which when said control means detects one or more pre-determined fault conditions on said spur it activates the isolation means and lowers the level of reference current. | 03-14-2013 |
20130083441 | LIGHTNING SURGE DETECTOR, SURGE PROTECTIVE DEVICE, AND MANAGEMENT SYSTEM FOR SURGE PROTECTIVE DEVICE - A lightning surge detector | 04-04-2013 |
20130286520 | METHOD AND APPARATUS FOR ESD CIRCUITS - A high performance ESD protection circuit is provided. Embodiments include a circuit having an RC clamp circuit including a first NMOS transistor having a first source, drain, and gate, a current mirror circuit including first and second PMOS transistors having a second and third source, drain, and gate, respectively, and an SCR circuit including a first P+ contact. The first source is coupled to a ground rail, the first drain is coupled to the second drain, second gate, and third gate, the second and third sources are coupled to a power rail, and the third drain is coupled to the first P+ contact, wherein during an ESD event the first NMOS and PMOS transistors turn on to discharge a first current to the ground rail, and the current mirror provides a second current to the first P+ contact for turning on the SCR. | 10-31-2013 |
20130286521 | FAULT DETECTION, ISOLATION, LOCATION AND RECONNECTION SYSTEMS AND METHODS - In an example embodiment, systems and methods for detecting and handling faults in a DC bus system (“system”) can comprise detecting a fault in the segment, isolating the segment from the system, waiting for a period of time, connecting a probe power unit to the system at the isolated segment, and determining if a fault still exists on the isolated segment, wherein the determining is based on whether power is discharging from the probe power unit when connected to the system. The system can comprise one or more controllers and a probe power unit. | 10-31-2013 |
20130314827 | CURRENT DETECTING MECHANISM CAPABLE OF DETECTING GROUND FAULT FOR DIRECT CURRENT CIRCUIT BREAKER - A current detecting mechanism according to this invention includes a direct current shunt having a plurality of resistor members with high resistivity to output an electric potential difference across the resistor members, proportional to a current flowing through an electric load side terminal, as a voltage signal, and a hall sensor assembly having a pair of magnetic cores installed to face each other with an air gap therebetween, and a hall sensor to output an output voltage according to a magnetic flux induced in proportion to a current flowing through a load side terminal, without being connected with the direct current shunt, of load side terminals. | 11-28-2013 |
20130321965 | RESIDUAL-CURRENT CIRCUIT BREAKER - A residual-current circuit breaker includes switching contacts and at least one residual current detector configured to determine a residual current signal. The residual-current circuit breaker is configured to bring about an opening of the switching contacts upon the detection of a residual current greater than a pre-definable tripping current. A first circuit arrangement is configured to inhibit tripping of the residual-current circuit breaker when a residual current occurs that has a duration that is shorter than half a period of a grid frequency of an associated electrical grid. | 12-05-2013 |
20140063668 | LEAK CURRENT ABSORPTION CIRCUIT, VOLTAGE GENERATING CIRCUIT, POWER SUPPLY APPARATUS, AND VEHICLE - A leak current absorption circuit for absorbing a leak current from an output transistor includes a switch connected to a grounding node on one end, a constant voltage circuit connected between the other end of the switch and an output node, a switch-operating circuit connected between the output node and the grounding node to operate the switch based on a voltage of the output node. When the voltage of the output node becomes equal to a predetermined threshold voltage or more, the switch-operating circuit turns on the switch to clamp the voltage of the output node by allowing at least a portion of the leak current from the output transistor flow to the grounding node. | 03-06-2014 |
20140071568 | DC Power Source Isolation with Diode and Bypass Switch - A protection circuit for an alternative energy source comprises a primary path including an isolation element, e.g., diode or transistor, to prevent current backflow into the alternative energy source from the power device. A low resistance bypass path around the isolation element is also provided. In a protection mode, the bypass path is opened so current must flow through the primary path. In a bypass mode, the bypass path is closed to provide a low resistance path for current to flow from the alternative energy source to the power device. | 03-13-2014 |
20140111895 | SURGE PROTECTION CIRCUIT - A surge protection circuit, related to the power electronics field. The surge protection circuit includes: an input configured to provide direct current power supply, an output configured to connect to a next circuit, and a cutoff circuit connected to the output; the surge protection circuit further includes: a discharge circuit connected between the input and the cutoff circuit; the discharge circuit includes: a diode and a field-effect transistor; the cathode of the diode is connected to the positive end of the input, and the anode of the diode is connected to the source of the field-effect transistor; the gate of the field-effect transistor is connected to the positive end of the input, the drain of the field-effect transistor is connected to the negative end of the input, and the direction of the parasitic diode of the field-effect transistor is opposite to the direction of the diode. | 04-24-2014 |
20140168835 | SMART JUNCTION BOX FOR A PHOTOVOLTAIC SYSTEM - A method and apparatus for a smart junction box including: a first set of switches connected across input terminals adapted for connection to output terminals of a plurality of photovoltaic (PV) modules, a plurality of diodes connected across input terminals of each respective switch in the first set of switches, at least one reverse current detection device on at least one output terminal of the smart junction box, a second set of switches to selectively disconnect and short circuit output terminals of the smart junction box when a reverse current is detected, and wherein at least one switch of the second set of switches is located across the output terminals, a controller for controlling the first and second set of switches. | 06-19-2014 |
20140268453 | SUPERCONDUCTING FAULT CURRENT LIMITER SYSTEM - A current limiter system includes a superconducting fault current limiter (SCFCL) operative to conduct load current during a normal operation state in which the SCFCL is in a superconducting state. The current limiter system also includes a shunt reactor connected in an electrically parallel fashion to the SCFCL and configured to conduct less current than the SCFL in the normal operation state, and a protection switch connected in electrical series with the SCFCL and shunt reactor and configured to disconnect the SCFCL for a predetermined time from a load current path during a fault condition after fault current exceeds a threshold current value. | 09-18-2014 |
20140301003 | Socket for a Solar Panel with a Protective Circuit - The present disclosure relates to a junction box for a solar panel, having a protective circuit that defines an operating state and a protected state. The protective circuit includes a short-circuiting switch between the output-side connecting elements of the first and second external connecting lines and an isolating switch between the short-circuiting switch and one of the poles of the solar panel, in which in the protected state, the short-circuiting switch short-circuits the output-side connecting elements of the first and second connecting lines to each other and the isolating switch disconnects the short-circuiting switch from the solar panel on at least one side. | 10-09-2014 |
20140321012 | POWER SWITCHING CIRCUIT - A power switching circuit includes a power semiconductor element that includes a main switching element connected in parallel with a main body diode and a sense switching element connected in parallel with a sense body diode; a reverse overcurrent detection circuit that detects an overcurrent flowing in the reverse direction out of currents flowing through a parallel-connection body of the sense switching element and the sense body diode; and a control circuit that drives the gate of the power semiconductor element; wherein when the reverse overcurrent detection circuit detects a reverse overcurrent, the control circuit controls the main switching element and the sense switching element to turn on. | 10-30-2014 |
20150022923 | DRIVER CURRENT CONTROL APPARATUS AND METHODS - Apparatus and methods disclosed herein implement steady-state and fast transient electronic current limiting through power transistors, including power transistors used as pass elements associated with general purpose drivers. Embodiments herein prevent excessive steady-state current flow through one or more driver pass elements and/or through load elements in series with the pass element(s) via a current sensing and driver preamplifier feedback loop. A transient over-current protection circuit includes a fast transient switch and a transient over-current control circuit. The transient over-current control circuit rectifies one or more transient voltage spikes to create a momentary direct current (DC) voltage power supply (MVS) to power a fast transient driver circuit and to trip the fast transient switch. The fast transient switch discharges a transient pass element input voltage (e.g., a gate voltage on a MOSFET power transistor in some embodiments) and terminates current flow through the pass element current channel. | 01-22-2015 |
20150029626 | CONTROLLER AREA NETWORK NODE TRANSCEIVER - An electronic device comprises a control module, a transceiving module, a first isolator, and a second isolator. The control module is configured to generate a control signal in response to a signal from an MCU. The transceiving module comprises a transceiving unit, which further comprises a first switch and a second switch. The electronic device further comprises a first isolator and a second isolator. The first isolator is external to the transceiving unit and is coupled between the first switch and a bus. Moreover, the first isolator is configured to isolate a first spike current coming from the bus. The second isolator is external to the transceiving unit and is coupled between a terminal of the second switch and the bus. Moreover, the second isolator is configured to direct a second spike current coming from the bus to the ground. | 01-29-2015 |
20150036249 | PROTECTION CIRCUIT FOR POWER SUPPLY UNIT - A protection circuit is coupled between a power supply unit and a device. The protection circuit includes a delay circuit, a power circuit, a switch circuit, and a determining circuit. The power supply unit supplies power to the device through the power circuit when the device works normally. The delay circuit receives a power good signal and outputs the power good signal after a preset period of time to the switch circuit. The switch circuit energizes the determining circuit when the switch circuit receives the power good signal. The determining circuit outputs a control signal to the power circuit to disconnect the power supply unit from the device when the device is short-circuited. | 02-05-2015 |
20150049405 | Arrester Bypass Devices - An arrester bypass device can include a switch having an normal state and an operated state. The arrester bypass device can also include a first electrode mechanically coupled to the switch, where the first electrode is held when the switch is in the normal state and released when the switch is in the operated state. The arrester bypass device can also include a second electrode positioned in line with the first electrode, wherein the first electrode contacts the second electrode when the switch is in the operated state. The arrester bypass device can further include a ground strap having a first end and a second end, where the first end is mechanically coupled to the plunger, and where the second end is mechanically coupled to an electrical ground. | 02-19-2015 |
20150049406 | ELECTROSTATIC DISCHARGE PROTECTION CIRCUIT ARRANGEMENT, ELECTRONIC CIRCUIT AND ESD PROTECTION METHOD - An electrostatic discharge, ESD, protection circuit arrangement is connectable to a first pin and a second pin of an electronic circuit and arranged to at least partly absorb an ESD current entering the electronic circuit through at least one of the first pin or the second pin during an ESD stress event. The protection circuit arrangement comprises a first ESD protection circuit arranged to absorb a first portion of the ESD current during a first part of the ESD stress event during which first part a level of the ESD current exceeds a predetermined current threshold; and a second ESD protection circuit arranged to absorb a second portion of the ESD current, the second portion having a current level below the current threshold, at least during a second part of the ESD stress event. The second ESD protection circuit comprises a current limiting circuit arranged to limit a current through at least a portion of the second ESD protection circuit to the current threshold. | 02-19-2015 |
20150062764 | ESD PROTECTION CIRCUIT - The ESD protection circuit includes a detection controlling circuit that is connected between the power supply line and the grounding line, detects a current flowing through the power supply line and outputs a controlling signal responsive to a result of the detection. The ESD protection circuit includes a protecting nMOS transistor connected to the power supply line at a drain thereof and receives the controlling signal at a gate thereof. The ESD protection circuit includes one stage of PN-junction diode connected to a source of the protecting nMOS transistor at an anode thereof and to the grounding line at a cathode thereof. | 03-05-2015 |
20150070806 | HIGH VOLTAGE TOLERANT SUPPLY CLAMP - Apparatus and methods for active detection, timing, and protection related to transient electrical events are disclosed. A detection circuit generates a detection signal in response to a transient electrical stress. First and second driver circuits of an integrated circuit, each driver having one or more bipolar junction transistors, activate based on the detection signal and generate activation signals. The one or more bipolar junction transistors of the first and second driver circuits are configured to conduct current substantially laterally across respective base regions. A discharge circuit, having an upper discharge element and a lower discharge element, receives the activation signals and activates to attenuate the transient electrical event. | 03-12-2015 |
20150085410 | LOAD DRIVING DEVICE - A load driving device includes a driving switching element, an interrupting part, a short-circuiting switching element, and a protecting element. The driving switching element drives a load by controlling energization to the load. The interrupting part is disposed on an energizing path to the load. The interrupting part is not melted by a driving current to the load and is melted by an interrupting current larger than the driving current so as to interrupt energization to the load. The short-circuiting switching element is connected in parallel with the load and applies the interrupting current to the interrupting part. The protecting element protects the short-circuiting switching element. | 03-26-2015 |
20150085411 | CONTROLLER AREA NETWORK NODE TRANSCEIVER - A transceiver includes a control module and a transceiving module. The control module is configured to generate a control signal in response to a signal from a micro-control unit. The transceiving module is integrated with the control module. The transceiving module is configured to, in response to the control signal, broadcast a first electrical signal to a bus and receive a second electrical signal from the bus. | 03-26-2015 |
20150146332 | Intrinsically Safe Voltage Clamping Device - An intrinsically safe voltage clamping device includes a regulated rail, a ground rail, and a shunt regulator assembly. The shunt regulator assembly is coupled to both the regulated rail and the ground rail and includes one or more regulating components. The shunt regulator assembly is configured to clamp a voltage applied across the regulated rail and the ground rail to a safety clamp voltage value. The intrinsically safe voltage clamping device also includes a power-sensing component configured to cause one or more limiting components to reduce a power dissipated in the respective regulating components without raising the clamp voltage. | 05-28-2015 |
20150303682 | INTRINSICALLY SAFE VOLTAGE CLAMPING DEVICE - An intrinsically safe voltage clamping device includes a regulated rail, a ground rail, and a shunt regulator assembly. The shunt regulator assembly is coupled to both the regulated rail and the ground rail and includes one or more regulating components. The shunt regulator assembly is configured to clamp a voltage applied across the regulated rail and the ground rail to a safety clamp voltage value. The intrinsically safe voltage clamping device also includes a power-sensing component configured to cause one or more limiting components to reduce a power dissipated in the respective regulating components without raising the clamp voltage. | 10-22-2015 |
20150318691 | DRIVER CURRENT CONTROL APPARATUS AND METHODS - Apparatus and methods disclosed herein implement steady-state and fast transient electronic current limiting through power transistors, including power transistors used as pass elements associated with general purpose drivers. Embodiments herein prevent excessive steady-state current flow through one or more driver pass elements and/or through load elements in series with the pass element(s) via a current sensing and driver preamplifier feedback loop. A transient over-current protection circuit includes a fast transient switch and a transient over-current control circuit. The transient over-current control circuit rectifies one or more transient voltage spikes to create a momentary direct current (DC) voltage power supply (MVS) to power a fast transient driver circuit and to trip the fast transient switch. The fast transient switch discharges a transient pass element input voltage (e.g., a gate voltage on a MOSFET power transistor in some embodiments) and terminates current flow through the pass element current channel. | 11-05-2015 |
20150349520 | ELECTRICAL APPARATUS - An electrical apparatus ( | 12-03-2015 |
20150372473 | APPARATUS FOR LIMITING CURRENT OF LINE OR BREAKING CURRENT, AND CONTROL METHOD THEREOF - An apparatus for limiting a current of a line or breaking a current, and a control method thereof are disclosed. The apparatus includes a current breaking branch ( | 12-24-2015 |
20150372482 | METHOD, SYSTEM, AND APPARATUS FOR PROVIDING ARC FLASH MITIGATION - A power equipment protection system is provided. The power equipment protection system includes a first trip unit configured to monitor a first circuit, a second trip unit configured to monitor a second circuit that is downstream from the first circuit, an arc-flash (AF) sensor configured to detect an arc flash, an AF mitigation device, at least one current sensor, and a controller. The power equipment protection system is operable in a first mode and a second mode, wherein in the first mode, the controller is configured to activate the AF mitigation device based on signals generated by both the AF sensor and the at least one current sensor, and wherein in the second mode, the controller is configured to activate the AF mitigation device based on signals generated by at least one of the at least one current sensor and the AF sensor. | 12-24-2015 |
20150372483 | DEVICE FOR CONNECTING TO A POWER NETWORK AND METHOD FOR PROTECTING SUCH A DEVICE - A device for connecting to a power network includes a circuit board, a first input-side connection point, to which a first phase of the power network can be connected, a second input-side connection point, to which a second phase of the power network can be connected, and a first and second electrical conductor. The first conductor is connected to the first input-side connection point and the second conductor is connected to the second input-side connection point inside the device. The first conductor is routed as a conductor trace in an interior layer of the circuit board and includes a constriction. The second conductor is routed past the constriction such that electrical insulation existing between the constriction of the first conductor and the second conductor is destroyed in the case of a short-circuit current, to provide an electrically conductive connection between the first and second conductor exists. | 12-24-2015 |
20160056624 | CURRENT LIMITING CIRCUIT - A current limiting circuit is electronically connected between a power source and a load, and comprises a MOSFET having a drain, a gate, and a source, a first operational amplifier, a voltage-limiting circuit, and a first transistor having an emitter, a base, and a collector. The drain is connected to the power source, the source is connected to the load and is grounded, and the gate is connected to the voltage-limiting circuit. The emitter is connected to the voltage-limiting circuit, the base is connected to the first operational amplifier, and the collector is grounded. The first operational amplifier detects an output voltage of the load to control a drain current of the MOSFET for protecting the MOSFET from being overloaded, and the current limiting circuit has no current limiting resistor, such that power consumption is reduced. | 02-25-2016 |
20160079401 | SHORT-CIRCUIT PROTECTION CIRCUITS, SYSTEM, AND METHOD - Systems, circuits, and methods for protecting an Insulated-Gate Bipolar Transistor (IGBT) from short-circuit events are provided. A short-circuit protection circuit is described that includes a switch, a resistor, a capacitor, and an optional current buffer that provide a strong pull-down to the IGBT in response to detecting a short-circuit event and then controls a rate at which turn-off current is decreased, thereby minimizing a peak voltage for the IGBT. | 03-17-2016 |
20160093606 | ESD PROTECTION FOR 2.5D/3D INTEGRATED CIRCUIT SYSTEMS - An integrated circuit structure includes first and second integrated circuit devices disposed on a interposer. Each integrated circuit device has electrostatic discharge (ESD) protection circuitry therein connected to an internal ESD bus. The first and second integrated circuit devices communicate with one another through the interposer. The interposer includes an ESD bus electrically connected to the ESD busses of the first and second integrated circuit devices for providing cross-device ESD protection for the integrated circuit devices. | 03-31-2016 |
20180026030 | PROTECTION CIRCUIT AND PROTECTION CIRCUIT SYSTEM | 01-25-2018 |