Abstract: A driver circuit provides power from a power source to a load. The driver circuit includes a surge protector, an input stage (e.g., full wave rectifier), a controller, an overvoltage protection circuit, and an output stage (e.g., a half bridge inverter). The input stage receives power from the power source and provides a direct current (DC) power rail. The controller operates the output stage to provide power from the DC power rail to the load. The overvoltage protection circuit shuts down the controller when the DC power rail exceeds a predetermined voltage. This ceases operation of the output stage, protecting the output stage from damage while the DC power rail is above the predetermined voltage.

Abstract: A bi-directional transmitter/receiver according to an embodiment includes a pin connected with a main control circuit, a transistor connected with a first electrode to the pin, a Schmitt trigger which determines an output according to a voltage of the pin, and a temperature sensor which is connected to the pin and which senses temperature and outputs temperature information to the pin. A driving circuit for controlling switching operation of one or more switches includes a bi-directional transmitter/receiver.

Abstract: The present invention relates to a prevention method of abnormal action protection of UHV regulating compensation transformer with no-load input, the prevention method includes: first determining a value of differential current of regulating compensation transformer, if the value of differential current is smaller than a pre-setting threshold, then, identifying whether an uninterruptible point of differential current waveform meets an pre-setting regulation according to original value of differential current or sampling value of differential difference current, and determining comprehensively whether the regulating compensation transformer is in no-load input or in fault directly with a value of second harmonic content of logic differential current together; if a value of differential current before pre-setting period is larger than the pre-setting threshold, the regulating compensation transformer is diagnosed to have external CT saturation, determining comprehensively whether the regulating compensation tra

Abstract: An electronic circuit device comprises an output part, which includes at least three phase parts and a first temperature sensor and a second temperature sensor, which output detection signals corresponding to temperatures of the output part. Each phase part includes two high-side and low-side switching elements. The first temperature sensor is located at a position between the first phase part and the second phase part. The second temperature sensor is located at a position between the second phase part and the third phase part. The electronic circuit device further comprises a control circuit part, which specifies a phase part of overheat among the phase parts based on the detection signals of the first temperature sensor and the second temperature sensor.

Abstract: An arc fault circuit interrupter (AFCI) outlet is disclosed which detects and interrupts upstream parallel arc faults. The example AFCI outlet includes a switching element coupled between the line and neutral conductors at the outlet. The outlet also includes a voltage sensor and a current sensor. A parallel upstream arc fault is detected from a sensed voltage drop and no corresponding increase in current. On detecting the arc fault, the switching element is closed and current flows through the relatively lower resistance switching element interrupting power through the arc fault. The closed switching element results in an overcurrent condition causing an upstream conventional thermal-magnetic circuit breaker to trip.

Abstract: A power converter, short circuit protection circuit, and control method are disclosed herein. The power converter is configured to generate an output voltage and includes a semiconductor switch, a short circuit protection circuit, and a signal processing module. The semiconductor switch is configured to adjust the output voltage according to a driving signal. The short circuit protection circuit is configured to generate a short circuit protecting signal according to a control signal and a short circuit status of the semiconductor switch. The signal processing module is configured to generate the control signal and the driving signal according to a modulating signal, and to turn off the semiconductor switch according to the short circuit protecting signal. A delay duration is present between the modulating signal and the control signal, and the semiconductor switch is turned on during the delay duration.

Abstract: An assembly for electrical protecting a potential short-circuit path in a power network having an energy store and having a system-determined, variable source internal resistance. The assembly includes a separating element, the triggering characteristic of which is insufficiently sized for protecting a first and second conductor section of the potential short-circuit path in a first operating state of the energy store, and a second protection device, which is configured to protect the first and second conductor section against a load which occurs below the triggering limit of the separating element in the first operating state.

Abstract: A multi-pole circuit interrupter configured to be coupled between an AC source and an electric load electronically detects a hazardous condition associated with energizing of poles and responds to overcome the hazardous condition using a solenoid. The multi-pole circuit interrupter comprises a first switch to energize a first pole on a phase A conductor of the multi-pole circuit interrupter and a second switch to energize a second pole on a phase B conductor of the multi-pole circuit interrupter. The multi-pole circuit interrupter further comprises an electronic solid-state circuit coupled to the phase A conductor and the phase B conductor to detect a line voltage variation and control a current to a device in response to trip an energized pole among the first pole and the second pole if only one of the first pole and the second pole is energized when a user controls a tie bar to turn ON or turn OFF the multi-pole circuit interrupter or when a trip bar fails to trip one of the first pole and the second pole.

Abstract: Method for detecting an electric arc in a photovoltaic installation, characterized in that it comprises the following steps: Measurement (E6) of voltage values at at least one site of the electrical circuit of the photovoltaic installation; Digitization (E8) of the measured voltage values so as to form a data sampling x; Computation (E10) of a first indicator of presence of an electric arc, on the basis of a statistical computation on the data sampling x, from among the variance, a value analogous to the variance, or the interquartile range of the data sampling; Computation (E10) of a second indicator of presence of an electric arc, on the basis of a statistical computation on the data sampling based on one or more estimations of the mean and/or of the median of the data sampling; Comparison (E12) of the first and second indicators of presence of an electric arc with respective thresholds so as to deduce therefrom the presence or absence of an electric arc within the photovoltaic installation.

Abstract: A performance measuring system integrated with an article of clothing, the system has a computing unit for coordinating, processing and transmission of sensor data connected to a bus and an antenna. A sensor for measuring performance characteristics is connected to the bus; the bus facilitates transmission and reception of control and data values between the computing unit and the sensor. Also, an antenna is connected to the computing unit for communicating with other computing devices and transmission of sensor data. The other computing devices display the sensor data to a user or forward the sensor data onto another communication media such as the internet or interactive television. A social networking system sharing athletic statistics using a webservice, a personal processing unit connectible to the webservice, and a computing unit having an activity program for at least one sensor. This system has an activity update service integrally associated with the webservice.

Abstract: One embodiment describes an operating coil driver circuitry, which includes a control circuitry that outputs a trigger signal and a reference voltage; an operational amplifier that compares the reference voltage to a node voltage, in which the node voltage is directly related to current flowing through an operating coil of a switching device and the operational amplifier outputs a logic high signal when the node voltage is higher than the reference voltage and outputs a logic low signal when the node voltage is lower than the reference voltage; and a flip-flop that outputs a pulse-width modulated signal to instruct a switch to supply a desired current to the operating coil based at least in part on the trigger signal and the signal output by the operational amplifier.

Abstract: A leakage current detection device connected between a power source and a load, which includes a self-testing or leakage current detection selection trigger unit, for selecting a leakage current detection mode or a self-testing mode; a self-testing unit, for periodically generating a simulated leakage current signal in the self-testing mode; and a leakage current detection unit, for detecting a leakage current signal in the leakage current detection mode and detecting the simulated leakage current signal in the self-testing mode. The selection trigger unit further causes the power source to be disconnected from the load when a leakage current signal is detected, and sends a self-testing result to the self-testing unit depending on whether the leakage current detection unit detects the simulated leakage current signal. The self-testing unit displays an indication of the self-testing result.

Abstract: A gaming system includes circuitry and associated methodology for detection of continuity along one or more sensing paths for determination of the presence and proper seating of one or more component boards to each other and a backplane, having an arbitrary number of couplings. The invention controls voltage to one or more components of the gaming system, enabling selective activation of various components, on one or more of the connected boards, based on the proper seating of component boards to each other and a backplane. The invention implements dynamic configuration of sensing paths (defined by signal paths and signal traversal) and subsequent continuity detection through interfacing connector/port pairs, in combination with specifically placed electronic components and local ground connections along the sensing paths, to control powering selective system components based upon a detection of the presence and proper seating of multiple component boards to each other and a backplane.

Abstract: A protection circuit applied to a convertor including M pieces of driving switch modules each coupled to a power source, a load and one of M sets of driving signals. The ith driving switch module is controlled by the ith set of driving signals to selectively enable current paths between the power source and the load. A first sub protection circuit in the protection circuit includes a first protection switch module and a first detection module coupled to the first protection switch module. When the ith set of driving signals indicates an error event, the first protection switch module selectively couples the ith set of driving signals to a reference voltage according to a first detection signal. M and i are positive integers, and i is not larger than M.

Abstract: An apparatus (100) for quenching at least part (110) of a superconductor in a superconducting state in reply to a quench signal to initiate a transition from the superconducting state into a normal-conducting state comprises: means (120) for providing an alternating (AC) current of a predetermined strength and/or predetermined frequency to the at least part (110) of the superconductor, wherein the means (120) for providing the AC current comprises a control terminal (130) configured to receive the quench signal. The means (120) for providing the AC current is configured to be activated in response of receiving the quench signal at the control terminal (130) so that the AC current flows through the at least part (110) of the superconductor, wherein the predetermined strength and/or the predetermined frequency is selected such that the transition from the superconducting state into a normal-conducting state is triggered.

Abstract: An arc fault circuit interrupter detector circuit including a super regenerative high frequency receiver is described herein. In one exemplary, non-limiting embodiment, a current measure component determines that a current noise signal within a circuit breaker is occurring at a particular frequency of interest. The super regenerative high frequency receiver receives the current noise signal and, via an oscillator circuit, causes the signal to ramp to a quench voltage, dissipate, and repeat. A microcontroller in communication with the super regenerative high frequency receiver measures a time period of the oscillator circuit's oscillations, and determines an amplitude of the current noise signal based, at least in part, on the time period. If it is determined that the amplitude of the input current signal at the frequency of interest corresponds to an arc fault event, a trip signal is generated to trip the circuit, quenching the arc fault event.

Abstract: This document discusses, among other things, an electro-static discharge (EDS) filtering circuit and method, a reset circuit, and an electronic device. The ESD filtering circuit comprises a first current dividing circuit and a second current dividing circuit which respectively share a current of a first power source signal and aggregate the shared currents to form a second power source signal upon filtering, wherein a voltage drop of the first current dividing circuit is constant and the second current dividing circuit is a pure resistor element circuit.

Abstract: The present invention provides a protection device which includes a laminar element 16 which is formed of an insulation resin and has at least one throughhole; electrically conductive metal thin layers 22 and 28 which are positioned on each of main surfaces of the laminar element, and a fuse layer 40 which is positioned on a side surface defining said at least one throughhole and electrically connects the electrically conductive metal thin layers. The fuse layer includes a first metal layer 41 consisting of a metal having a higher melting point and a second metal layer 42 consisting of a metal having a lower melting point. The protection device of the present invention allows a larger amount of a current to flow therethrough and can provide a protection from an excessive current.

Abstract: An electrical protector with a central axis includes a cap defining a top and a downwardly extending cap wall, and insert defining a ring and an upwardly extending insert wall, at least three protrusions extending inwardly from an interior surface of the insert wall toward the central axis, and a sealant disposed at least within the cap. The cap wall engages the insert wall, thereby establishing a connection between the cap and the insert. The protrusions are adapted to engage a structure, thereby securing the electrical protector onto the structure.

Abstract: Disclosed herein is a detection apparatus including: a resonant circuit provided with a Q-factor measurement coil and one or more capacitors to serve as a circuit for receiving pulses; a response-waveform detecting section configured to detect the waveform of a response output by the resonant circuit in response to the pulses; and a Q-factor measuring section configured to measure a Q factor of the resonant circuit from the response waveform detected by the response-waveform detecting section. It is possible to increase the precision of detection of a metallic foreign substance existing between a power transmitting side and a power receiving side.