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| Number | Title | Issue Date |
| 8045311 | Load driving and diagnosis system and control method A load driving and diagnosis system controls the feed and block of a load current flowing into an inductor such as a solenoid. The load driving and diagnosis system holds a counter-electromotive force, which is developed when the load current is blocked, at a voltag... | 10/25/2011 |
| 8018704 | Parallel analog and digital timers in power controller circuit breaker A circuit breaker for a power controller integrated circuit is described where an analog timer and a digital timer are provided in parallel. The digital timer provides a fixed, on-chip maximum delay during an overcurrent condition to ensure the transistor will not b... | 09/13/2011 |
| 7983014 | Disconnector and overvoltage protection device The disconnector of the present invention comprises: a current transformer that detects a current flowing through electric wires; a rectifying part that rectifies the current outputted from the current transformer; a charging part that charges the current outputted ... | 07/19/2011 |
| 7940506 | Automated AC line filter and surge suppression apparatus and method An automated AC line filter and surge suppression apparatus 100 having an inductive current sense loop (ICSL) circuit 10 for sensing inductive current at a load and controlling the application of AC line filter 112 to an AC power line to the loa... | 05/10/2011 |
| 7940507 | Switching control circuit and self-excited DC-DC converter The switching control circuit comprises a switching control signal generation circuit that detects a change in ripples of the output voltage and-generates a switching control signal for the on/off control of the switching element to make the output voltage follow th... | 05/10/2011 |
| 7755874 | Switching control circuit and self excited DC-DC converter A self-excited DC-DC converter includes a switching element that chops an input voltage; a smoothing circuit that smoothes the chopped voltage to generate an output voltage; and a switching control circuit. The switching control circuit includes a switching control ... | 07/13/2010 |
| 7616422 | Over current protection circuit for power supplies An over current protection circuit provides over current protection (O.C.P) and short current protection (S.C.P) and can selectively operate in auto recover mode or latch off mode by replacing certain elements therein. Hence, the present invention can be designed ea... | 11/10/2009 |
| 7440246 | Circuit interrupting apparatus with remote test and reset activation The present disclosure relates to resettable circuit interrupting devices and apparatus capable of being tested and reset from remote locations, and in particular to portable circuit interrupting devices and apparatus capable of being tested and reset from remote lo... | 10/21/2008 |
| 7417840 | Self-supplied electronic protection device for automatic circuit-breakers An electronic self-supplied protection device for automatic circuit-breakers that includes: a supply device that draws energy from the stretch of electrical network protected by said circuit-breaker; a control device with at least two levels of operation, where the ... | 08/26/2008 |
| 7408750 | Methods of detecting arc faults characterized by consecutive periods of arcing An apparatus and method for detecting electrical arc faults that has reduced susceptibility to nuisance tripping. The apparatus includes a current sensor, an input sense circuit, an arcing sense circuit, a power supply, a tripping circuit, a processing unit, and an ... | 08/05/2008 |
| 7379284 | Switching control circuit and self-excited DC-DC converter A self-excited DC-DC converter comprises a switching element that chops a direct-current input voltage; a smoothing circuit that smoothes the chopped voltage to generate a DC output voltage; a switching control signal generation circuit that generates a switching co... | 05/27/2008 |
| 7376359 | Digital regulated light receive module and regulation method The invention discloses a digital adjusting method for an optical receiver module, and the method implements real-time monitor of parameters, on-line adjustment and non-linear compensation. The digital optical receiver module includes elements as follow: a voltage o... | 05/20/2008 |
| 7372687 | Combination current sensor and relay A protection device for monitoring current in a power cable to an electrical device and for controlling a remotely located starter for the electrical device in response to a system controller. The device includes a transformer magnetically linked with the power cabl... | 05/13/2008 |
| 7369389 | Electronic trip unit for circuit breakers An electronic trip unit for a circuit breaker is disclosed. The electronic trip unit has a processing circuit, a real time clock chip, and a power source for powering the real time clock chip in the absence of current in the circuit breaker. The processing circuit i... | 05/06/2008 |
| 7362148 | Device for controlling a semiconductor element A control device for controlling a load drive semiconductor element for driving a load has a test operation mode for measuring a leak current of the load drive semiconductor element. In the test operation mode, a control terminal of the load drive semiconductor elem... | 04/22/2008 |
| 7355416 | Measurement of cable quality by power over ethernet A method of determining impedance comprising: supplying power to a powered device from a power sourcing equipment at a first current limited level, Ilim1; measuring, at a plurality of times a voltage associated with the output of the power sourcing equipm... | 04/08/2008 |
| 7355867 | Power supply for an electric meter having a high-voltage regulator that limits the voltage applied to certain components below the normal operating input voltage Disclosed is an invention relating to a power supply for use in an apparatus for measuring electrical energy, comprising, in one embodiment, a first switching device, a device for storing electrical charge in electrical connection with the first switching device, a ... | 04/08/2008 |
| 7352545 | Compressor terminal fault interruption method and apparatus A compressor terminal fault interruption method and interrupter for disconnecting power to a compressor terminal when terminal venting failure is imminent including a current sensing circuit for sensing current provided to the terminal by a power source and outputti... | 04/01/2008 |
| 7304829 | Apparatus and method for filtering current sensor output signals An electronic filter for filtering the output signal of a current sensor of a circuit breaker is disclosed. The current sensor has an output signal characteristic similar to that of a Rogowski coil output signal characteristic that includes a third harmonic noise co... | 12/04/2007 |
| 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 |
| 7301743 | Device and a method for advanced protection from short circuit current A two channel universal device for advanced protection from a short circuit current which evaluates a rate-of-change of current in a supply feeder and compares the current in the supply feeder and the current in load phases generating a differential signal in such a... | 11/27/2007 |
| 7295900 | Load drive apparatus with short circuit determination The load drive apparatus has a driver unit and a control unit. The driver unit includes a control section modulating, in accordance with a PWM signal supplied from the control unit, a drive signal to be applied to a load apparatus between a high level and a low leve... | 11/13/2007 |
| 7295045 | Circuit for cutting-off output signal An output signal cutting-off circuit includes a first switching element, a driving circuit and a voltage-drop-signal generating circuit. When a voltage to be monitored becomes lower than a threshold voltage, a voltage-drop-signal is generated and supplied to the dri... | 11/13/2007 |
| 7287112 | Dynamic reconfiguration interrupt system and method The present invention system and method enables dynamic reconfiguration of an electronic device with appropriate interrupts in a convenient and efficient manner. A plurality of internal peripherals, an interconnecting component and the external coupling ports are pr... | 10/23/2007 |
| 7280338 | Power supply circuit, back-pack power supply module and circuit interrupter including the same A back-pack power supply module is for a circuit interrupter including an elongated line conductor. The back-pack power supply module includes a housing having an opening therethrough. The opening receives the elongated line conductor, which passes through the openi... | 10/09/2007 |
| 7271507 | Process and system for controlling an electronic power component and data recording support comprising instructions for executing the process The process for controlling an electronic power component for piloting an opening and/or closure of this component. The piloting process includes a plurality of steps for controlling the application of a succession of different commutation voltages on a control elec... | 09/18/2007 |
| 7268992 | Power supply with disconnect fuse A power supply in which a feed voltage (Us) is guided through at least one longitudinal branch to at least one output, the at least one branch having a disconnect fuse formed as a controlled semiconductor switch (SW1) and a monitoring unit (UWE) be... | 09/11/2007 |
| 7265959 | Solid state switch with quasi-predictive short circuit protection and thermal protection A protection circuit detects short circuit and/or current overload conditions based on one of a current level and a current change rate di/dt of a current through a load. A detection device uses an inductor to detect current change rate and a resistor to detect curr... | 09/04/2007 |
| 7262943 | Configuration unit and methods for configuring centrally controlled power distribution systems A configuration unit for a centrally controlled power distribution system is provided. The configuration unit includes a non-volatile memory device and a communications connection. The non-volatile memory device is permanently secured within a switchgear cubicle. Th... | 08/28/2007 |
| 7262574 | Robot overcurrent prevention system In an overcurrent prevention system for a robot having links connected by joints and an electrical system including electric motors installed at the joint, a power circuit connecting the electric motors to a power source, and drive circuits to supply current to the ... | 08/28/2007 |
| 7254001 | Circuit protection system A circuit protection system is provided that provides a dynamic delay time to an upstream circuit breaker if a fault is detected in a circuit where the dynamic delay time can be based upon the location of the fault, such as the nearest downstream circuit breaker. A ... | 08/07/2007 |
| 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 |
| 7236340 | Gate control circuit for prevention of turn-off avalanche of power MOSFETs A switch in an inductive circuit is prevented from avalanche operation when the switch is turned off. By preventing avalanche, the associated EMI is reduced or eliminated. Switch avalanche can be prevented using an active component, such as a transistor, or a passiv... | 06/26/2007 |
| 7233886 | Adaptive modeling of changed states in predictive condition monitoring An improved empirical model-based surveillance or control system for monitoring or controlling a process or machine provides adaptation of the empirical model in response to new operational states that are deemed normal or non-exceptional for the process or machine.... | 06/19/2007 |
| 7233470 | Distance relay apparatus A distance relay apparatus includes a directional relay element which performs computation to detect a fault, which occurs in the forward direction from an installing point of the relay apparatus, based on a voltage and a current which are received from an object to... | 06/19/2007 |
| 7230409 | Current limiting using PWM control A method and a system for current limiting using PWM control have been provided. The method includes sensing a load current to produce a control voltage. The control voltage is compared with a reference voltage to produce a detected output signal. Thereafter, the de... | 06/12/2007 |
| 7221106 | Cordset based appliance controller An apparatus and method for distributed control of an electrical appliance having a plug and a load and two power carrying conductors connecting the plug to the load, comprising locating power control elements completely within the plug, connecting interface element... | 05/22/2007 |
| 7209330 | Reset lockout for circuit interrupting device Resettable circuit interrupting devices, such as GFCI devices, that include a reset lock-out mechanism are provided. The reset lock-out mechanism prevents the resetting of electrical connections between input and output conductors if the circuit interrupting mechani... | 04/24/2007 |
| 7206178 | Electronic switching device A switching device includes a working circuit, to which an operating voltage can be or is applied to which has at least one electronic switching element. This switching element includes at least one control terminal for applying a switching signal and is switched of... | 04/17/2007 |
