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| Number | Title | Issue Date |
| 8107205 | Current differential relay An output unit outputs a trip current based on current amount data obtained by sampling a current amount at a first end of a power line at a predetermined timing and current amount data received from a device at a second end of the power line. A clock generating uni... | 01/31/2012 |
| 8102634 | Differential protection method, system and device A differential protection method in a power network for determining type of fault occurring within the power network. The power network includes a protected object having two or more ends, and a current differential protection device and a current transformer are ar... | 01/24/2012 |
| 8072723 | Resettable MEMS micro-switch array based on current limiting apparatus The present invention comprises a method for over-current protection. The method comprising monitoring a load current value of a load current passing through a plurality of micro-electromechanical switching system devices, determining if the monitored load current v... | 12/06/2011 |
| 8000072 | Apparatus for short circuit protection The present invention relates to an apparatus for short circuit protection. The apparatus comprises two supply inputs for connecting the apparatus to a terminal of a power supply and two supply paths being connected together and to the supply inputs, wherein each su... | 08/16/2011 |
| 7936546 | Apparatus and method for classifying a powered device (PD) in a power source equipment (PSE) controller Power over Ethernet (PoE) communication systems provide power and data communications over the same communications link, where a power source device (PSE) provides DC power (for example, 48 volts DC) to a powered device (PD). The DC power is transmitted simultaneous... | 05/03/2011 |
| 7907375 | Self powered electronic overload method and system A sensing and switching device, such as an overload relay, is provided which includes a processor configured to make measurements and control operation (e.g., tripping) of the device. The processor regulates measurement of voltage and/or current, and the supply of p... | 03/15/2011 |
| 7903381 | Negative sequence differential element A negative sequence differential element may detect a fault in an electrical power system by computing a differential between negative sequence values derived from a first phase-current measurement and a second phase-current measurement. A transformer may be dispose... | 03/08/2011 |
| 7876542 | Generator for gas turbine engine having DC bus fault short circuit control using a battery An aircraft electrical system comprises a generator to be driven as part of a gas turbine engine. The generator supplies electrical power to a plurality of accessories associated with the gas turbine engine, and to an aircraft DC bus in parallel to the supply to the... | 01/25/2011 |
| 7817391 | Over-current protection device for a switched-mode power supply An over-current protection device for use in a switched mode power supply prevents over-current conditions caused by short-circuits faults. The over-current protection device monitors a current in the switched mode power supply, and in particular, determines a peak ... | 10/19/2010 |
| 7715161 | Device for storing electrical energy The invention relates to a device consisting of a storage device for storing electrical energy. This may, for example, be a battery, an accumulator or another electrical storage device, for example a capacitor (double-layer capacitor). In the present application, th... | 05/11/2010 |
| 7679875 | Protective circuitry for photomultiplier tubes An electronic circuit for protecting a photomultiplier against overloads is provided. The photomultiplier has a cathode, an anode, a plurality of dynodes and a voltage divider. The circuit includes a high-voltage source, which applies a high voltage to the photomult... | 03/16/2010 |
| 7483248 | Method and apparatus for detecting current changes in integrated circuits One embodiment of the present invention provides a system that detects changes in power-supply current within an integrated circuit (IC) chip. During operation, the system monitors an induced current through a detection loop. This detection loop is situated at least... | 01/27/2009 |
| 7480125 | Constant voltage circuit, system power device and method of controlling system power device A constant voltage circuit including an input terminal to receive an input voltage, an output terminal configured to output a constant voltage converted from the input voltage to a load and an overcurrent protection circuit portion to perform an overcurrent protecti... | 01/20/2009 |
| 7403015 | System for wireless monitoring of circuit breakers A system for monitoring a circuit breaker that includes a monitoring device in electronic communication with the circuit breaker and a receiving device located separately from the monitoring device. The monitoring device receives data from the circuit breaker and wi... | 07/22/2008 |
| 7391252 | Circuit arrangement with a short-circuit protective circuit A circuit arrangement in which the temperature dependency of the short-circuit current and/or the influence of the output signal by the load current are at least partially avoided has first and second input connections, first and second output connections, a supply ... | 06/24/2008 |
| 7372685 | Multi-fault protected high side switch with current sense An integrated high side switch with multi-fault protection. When a fault condition is detected, the switch is turned off. The switch includes a pair of transistors that are connected such that the source of the first transistor is connected with the source of the se... | 05/13/2008 |
| 7362558 | Protective device in a controller In the case of a protective device in a controller which contains at least one processor and is connected to a sensor via a sensor ground line and at least one further line, the invention provides that a ground in the controller is connected to the sensor ground lin... | 04/22/2008 |
| 7363466 | Microcomputer A built-in memory is divided into the following two types: first memories 5 and 7 and second memories 4 and 6, and made accessible in parallel by third buses XAB and XDB and second buses YAB and YDB respectively. Thereby, a CPU core 2 | 04/22/2008 |
| 7359168 | Arc fault circuit interrupter and method for disabling series arc protection during current transients An arc fault circuit interrupter includes a line terminal, a load terminal, separable contacts electrically connected between the line terminal and the load terminal, and a current sensor structured to sense current associated with the load and flowing between the l... | 04/15/2008 |
| 7352550 | Method of detecting run-dry conditions in fuel systems Systems, methods, and apparatus for fault detection and interruption in power lines are provided. Circuitry is implemented via software and hardware that is configured to sense an operational aspect of a power line, such as current levels in a three-phase power line... | 04/01/2008 |
| 7352546 | Motor overcurrent protection device A motor overcurrent protection device connectable to a motor. The motor has a rotary shaft and a controlling port. The motor overcurrent protection device includes a sensing unit, a driving unit and a controlling unit. The sensing unit includes a magnetic block arra... | 04/01/2008 |
| 7333308 | Control arrangement A control arrangement is operable to control an electrical relay to supply current. The arrangement comprises current supply means and control means operable to provide a relay make signal and a relay break signal to control the state of the relay to respectively ma... | 02/19/2008 |
| 7327130 | Current sense method A current-sense circuit for measuring a load current in a switching power regulator may operate independently of process variation and temperature, and measure bi-directional load currents without requiring high-speed, high-voltage amplifiers for operation. A positi... | 02/05/2008 |
| 7323794 | Independent control of output current balance between paralleled power units An information handling system power supply system has a plurality of power supply units (PSUs) with outputs connected in parallel and a current balancing circuit for equalizing current from these outputs. A pseudo output current value may be added to the actual out... | 01/29/2008 |
| 7312969 | Current control apparatus for electric load A current control apparatus for an electric load can prevent burnout at a short-circuit accident with high control precision. A switching element is interrupted by an overcurrent detection circuit upon occurrence of a load short circuit, but is transitionally limite... | 12/25/2007 |
| 7312962 | Intelligent overcurrent protection for power supplies The present invention is a method and system for preventing an output of current greater than a desired amount for a redundant power supply system. In an embodiment of the present invention, redundant power supplies may be shut down when the sum of the output curren... | 12/25/2007 |
| 7312780 | Fluorescent lamp driver system A lamp driver system is provided that facilitates improved efficiency and brightness control for an optical display system. The lamp driver system provides this improved efficiency and brightness control through the precise control of the plasma in the lamp. The lam... | 12/25/2007 |
| 7301296 | Integrated control and diagnostics system An integrated control and diagnostics system for a controlled system (e.g., a motor) includes a diagnostics module and a controller coupled to the motor. To optimize operation, the diagnostics information signal is used to modify the control provided by the controll... | 11/27/2007 |
| 7301742 | Method and apparatus for accessing and activating accessory functions of electronic circuit breakers An electronic trip unit for a circuit breaker includes a programmed microprocessor and a module plug in removable signal communication with the microprocessor. The module plug includes a program identifier. The microprocessor recognizes the program identifier and ac... | 11/27/2007 |
| 7295935 | Analyzing and/or displaying power consumption in redundant servers A method of analyzing power consumption in an information handling system is provided. A voltage associated with a current share signal may be determined. A power load associated with the information handling system may be determined based at least on the determined... | 11/13/2007 |
| 7280334 | Integrated processor/motherboard short detect and safeguard mechanism A short detect and safeguard mechanism is incorporated into a processor and/or a motherboard. A processor includes a first power path to receive a VCC voltage and a second power path to receive a VSS voltage. A processor core executes instructions and is coupled to ... | 10/09/2007 |
| 7274548 | Abnormal current determining method, electronic apparatus, and computer program of same A cellular telephone 1 measures a current value after being turned on, and performs addition and subtraction of a predetermined margin to and from the measured value, and thereby sets up determination thresholds for an overcurrent and an undercurrent, namely,... | 09/25/2007 |
| 7274547 | Electrical power supply system and a permanent magnet generator for such a system An electrical power supply system including an engine driven permanent magnet generator (11) operable to produce a variable voltage and high frequency output which is converted by a series train AC/AC conversion circuit (14) into a fixed voltage and re... | 09/25/2007 |
| 7265953 | Power supply boost control device and method for identifying and judging fault location in power supply boost control device A power supply boost control device and a fault location identification and judgment method for the power supply boost control device of this invention comprise a step of judging whether a power supply relay has a turn-on fault, a precharge circuit has a turn-on fau... | 09/04/2007 |
| 7262628 | Digital calibration with lossless current sensing in a multiphase switched power converter Disclosed is a multi-phase power regulator that accurately senses current at a load in a lossless manner and adjusts the power supplied to the load based on the sensed current. Also disclosed is a method of calibrating a multiphase voltage regulator by applying a kn... | 08/28/2007 |
| 7262948 | Power switch with simple overload protection A system provides overload protection in power-switching circuitry, whereby current through a switch is controlled by adaptive circuitry. The switch, configured to deliver a current and a voltage, is connected to two current-limiting feedback circuits. The first cur... | 08/28/2007 |
| 7253637 | Arc fault circuit interrupter system In order to determine whether arcing is present in an electrical circuit, a sensor signal corresponding to current in said electrical circuit is processed. The sensor signal is filtered to determine the presence of noise in a predetermined frequency range and produc... | 08/07/2007 |
| 7245465 | Voltage regulator A voltage regulator has an output circuit for producing from an input voltage a predetermined output voltage to be supplied to a load, an overcurrent protection circuit for preventing overcurrent in the output circuit, a memory for storing control information fed fr... | 07/17/2007 |
| 7230813 | Electronic circuit breaker The electronic circuit breaker comprises an input for connection to a power-supply network and an output for connection to a load. Set between the input and the output are a switch and a limitation block which controls the switch to cause at least partial inhibition... | 06/12/2007 |
| 7227391 | Semiconductor integrated circuit device and semiconductor integrated circuit system A semiconductor integrated circuit device according to the present invention includes: a sample circuit in which through current to be monitored flows during switching between transistors; a non-overlap circuit for outputting an output signal for the switching in th... | 06/05/2007 |
