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US20130265682 Electrical Protection Circuitry For A Docking Station Base Of A Hand Held Meter And Method Thereof  
An electrical protection circuitry for a docking station base of a hand held meter and method thereof are disclosed. In the event of a short circuit at a meter interface connector, the protection...
US20110012564 DC POWER TOOL WITH A SAFETY DETECTION DEVICE  
A DC power tool having an interiorly provided lithium battery element and a charging switch includes a safety protection module to eliminate the risk of circuitry burn-out and other dangers...
US20090039070 SEMICONDUCTOR EQUIPMENT AND BREAKDOWN PRECAUTIONARY SYSTEM AND METHOD THEREOF  
A breakdown precautionary system of a semiconductor equipment includes a semiconductor equipment with a coil heater, at least a voltage/current detector, and an alarm system. The voltage/current...
US20150055260 Fast Switch Fault Current Limiter  
A fault current limiter circuit including a fast switch fault current limiter (FSFCL) and a voltage control reactor (VCR) operative to conduct load current during a steady state operation and...
US20140268454 SYSTEMS AND METHODS FOR POWER INTERRUPTION  
A power interruption circuit for use in a power distribution module is provided. The power interruption circuit is configured to provide power to a load and includes a shunt resistor, a plurality...
US20120224289 VOLTAGE ACTIVATED 2ND LEVEL SAFETY CIRCUIT FOR PERMANENT ISOLATION  
A voltage activated 2nd level safety circuit for permanent isolation having a current activated fuse useful for class III medical devices, military applications, and any other passive loads. The...
US20140022680 CURRENT LIMITATION SYSTEM FOR LIMITING THE EFFECTS OF A FAULT IN A DC GRID AND A METHOD OF OPERATING A CURRENT LIMITATION SYSTEM  
A current-limitation system for limiting a current through an DC connection in case of a fault occurring in a DC grid of which the DC connection forms a part is provided, as well as a method of...
US20130021701 OVERVOLTAGE AND OVERCURRENT PROTECTION CIRCUIT  
An overvoltage and overcurrent protection circuit includes a connection jack, an overvoltage protection switch connected to the connection jack, an overcurrent protection switch, a voltage...
US20120327542 POWER SOURCE PROTECTION CIRCUIT INCLUDING OVER-VOLTAGE PROTECTOR AND OVER-CURRENT PROTECTOR  
A protection circuit includes a first input, an over-voltage protector, an over-current protector, and a first output connected in series in that order. The first input is configured for receiving...
US20110261492 PROTECTION TO AVOID ABNORMAL OPERATION CAUSED BY A SHORTED PARAMETER SETTING PIN OF AN INTEGRATED CIRCUIT  
For a system to avoid abnormal operation caused by a shorted parameter setting pin of an integrated circuit, a protection apparatus and method apply a buffered reference voltage to the parameter...
US20150009597 ELECTRONIC FUSE CIRCUIT AND METHOD OF CONTROLLING THE SAME  
An electronic fuse circuit for interrupting a current flowing through a power circuit includes: a trip switch structured to open and close to interrupt and permit, respectively, the current...
US20140063669 System And Method For Protecting An Electrical Power Grid  
A differential protection system including a plurality of inputs power cables for transfer of power from electric power generators, such as wind power generators, to an output cable. Each input...
US20080258834 PULSE WIDTH MODULATION CIRCUIT  
A pulse width modulation (PWM) circuit includes a turn on/off switch and a PWM controller. The first terminal of the turn on/off switch is coupled to a turn off voltage. The control terminal of...
US20130107405 FAST DISTANCE PROTECTION FOR ENERGY SUPPLY NETWORKS  
A method for detecting a short circuit on a multiphase electrical energy supply network line includes recording current and voltage sampled values and generating a fault signal upon a fault...
US20120200967 INTEGRATED OVERDRIVE AND OVERVOLTAGE PROTECTION DEVICE  
In one general aspect, an apparatus can include an overcurrent protection device. The apparatus can include an overvoltage protection device coupled to the overcurrent protection device and...
US20150070801 TWO-POLE CIRCUIT BREAKERS  
A two-pole circuit breaker is provided that includes a first mechanical pole, a second mechanical pole and an electronic pole. The first mechanical pole includes a first armature having a first...
US20140168836 ARRANGEMENTS FOR NETWORK PROTECTION  
This disclosure relates an arrangement for protecting an electricity network against disturbances caused by for instance switched power techniques. By providing a filter, disturbances as generated...
US20130148246 PROTECTION CIRCUIT OF BATTERY PACK AND BATTERY PACK USING THE SAME  
A programmable protection circuit of a battery pack and a battery back are disclosed. The protection circuit includes programmable protection level specifications based on battery characteristics...
US20120224288 POWER MODULE  
A power module includes a current sensing circuit in which a transistor includes an emitter connected to a sense emitter of a current sense element of an IGBT and a base connected to ground, a...
US20130170084 METHOD AND DEVICE FOR SAFELY SWITCHING A PHOTOVOLTAIC SYSTEM AFTER DIFFERENTIATING THE ARC TYPE  
A method and a device for safely switching a direct-voltage system, in particular a photovoltaic system, in the event of an arc occurring on a direct-current side. Wherein the generated direct...
US20120162841 PROTECTION CIRCUIT AND PROTECTION METHOD THEREOF  
The present invention provides a protection circuit. The protection circuit includes an output stage circuit and a feedback unit that generates a first current. Under a first condition that the...
US20140321014 POWER DISTRIBUTION METHOD, POWER DISTRIBUTION APPARATUS, AND INFORMATION HANDLING SYSTEM  
An apparatus includes a power supply configured to supply power and a first electrical circuit breaker electrically coupled to the power supply. The apparatus includes a first electrical circuit...
US20140254054 POWER SUPPLY DEVICE FOR PLASMA PROCESSING  
A power supply device for plasma processing, wherein electric arcs may occur, comprises a power supply circuit for generating a voltage across output terminals, and a first switch connected...
US20130271885 POWER SUPPLY DEVICE FOR PLASMA PROCESSING  
A power supply device for plasma processing, wherein electric arcs may occur, comprises a power supply circuit for generating a voltage across output terminals, and a first switch connected...
US20140104734 Protection method and device of an electrical network for aircraft  
A method for protecting a bipolar power distribution network supplied with power by an electric power source isolated from an electrical ground of an aircraft. The network includes a resistive...
US20110141634 TEMPERATURE CONTROL SYSTEM FOR ELECTRICAL CORD REEL  
A reel includes a reel drum enclosed within a housing comprising a first housing portion, a second housing portion, and a middle housing portion positioned therebetween. A spindle member has a...
US20110122538 Apparatus for Shutting Off a Fault Current in a Current-Carrying Line  
A trigger is provided for switch closing of a dynamic switch that opens under current flow, the trigger being based on a measurement of the current flowing through the switch during burning of an...
US20090257160 UNIVERSAL TRIP UNIT  
A universal trip unit for use with a circuit breaker apparatus is provided and includes a communication unit configured to communicate with a personality module of the circuit breaker apparatus...
US20090174977 HARDWARE OVERVOLTAGE DISCONNECTING CIRCUIT  
The invention relates to a voltage detection control technology, especially relate to a hardware overvoltage disconnecting circuit wherein a DC power supply module is disconnected from a power...
US20080232015 CIRCUIT ABNORMALITY DETERMINING APPARATUS AND METHOD  
In circuit abnormality determining apparatus and method applicable to a brake control apparatus, an abnormality determining section determines at least one of an abnormality location of the...
US20150244165 BATTERY ENERGY STORAGE SYSTEM WITH ARC FLASH PROTECTION, ENERGY CONVERSION SYSTEM AND PROTECTION METHOD  
A battery energy storage system is disclosed, the battery energy storage system comprising a rechargeable battery assembly for storing and providing energy and a protection system including an arc...
US20130293994 Circuit Breaker for Protecting an Electrical System  
The invention relates to a circuit breaker for protecting an electrical system. The circuit breaker comprises a semiconductor switching element (T1) with a first and a second electrical terminal...
US20120176713 LIMITING CURRENT CIRCUIT THAT HAS OUTPUT SHORT CIRCUIT PROTECTION  
A limiting current circuit that has output short circuit protection is connected to an external voltage source and comprises an output terminal, an input current unit, a driving transistor, a...
US20120127619 INPUT POWER PORT PROTECTION COMPONENT  
In one general aspect, an apparatus can include an overvoltage protection portion, and an overcurrent protection portion operably coupled to the overvoltage protection portion such that heat...
US20110058295 PROTECTIVE DEVICE  
A protective device including a substrate, a conductive section and a first auxiliary medium is provided. The conductive section is supported by the substrate, wherein the conductive section...
US20140111889 METHODS TO AVOID A SINGLE POINT OF FAILURE  
A method to avoid a single point of failure in a system that includes at least two monitoring devices, at least two power supplies and a switching device coupled between the monitoring devices and...
US20110279937 LOW ON-RESISTANCE MOSFET IMPLEMENTED DC SOURCE BY-PASS OR CIRCUIT BREAKER WITH RELATED SELF-SUPPLIED CONTROLLER CIRCUIT INCLUDING FIRE OR OTHER RISK DC OUTPUT DISABLING MEANS  
A control circuit for a protection circuit device includes first and second voltage boosters, a comparator coupled thereto, and a MOSFET for bypassing a direct current (DC) source. The control...
US20100165527 PROTECTION FOR BI-DIRECTIONAL SWITCH  
A bi-directional protection circuit employs a single comparator for detecting fault conditions. Diodes are coupled between a detection node and voltage dividers setting references for inverting...
US20090180226 Electrical Circuit with Incendive Arc Prevention  
An electrical circuit comprising a power supply, a load, a first pair of parallel positive cables between the power supply and the load, a first pair of parallel negative cables between the load...
US20080100976 Limiting energy in wiring faults combined upstream and downstream protection  
An intrinsically safe system in a hazardous atmosphere includes a power supply. The system includes a plurality of load devices. The system includes wiring in communication with the power supply...
US20120313788 Alternating current contactor with electronic short circuit self-locking function  
An alternating current contactor (AC contactor) with an electronic short circuit self-locking function, includes an AC contactor body (a). The AC contactor body (a) includes a shell body. A short...
US20120151225 APPARATUS, METHOD, AND SYSTEM FOR IMPROVED POWER DELIVERY PERFORMANCE WITH A DYNAMIC VOLTAGE PULSE SCHEME  
An apparatus and method is described herein for providing a dynamic pulse scheme for a voltage supply. A load (current) demand event of a processor is either predicted and/or detected. In response...
US20150103456 Methods and Systems for Protecting DC Circuits  
Methods and systems for protecting DC circuits are provided. In an aspect, a method for controlling at least one protection circuit is disclosed. The method can monitor one or more parameters of...
US20110063768 ELECTRICAL SAFETY DEVICES AND SYSTEMS FOR USE WITH ELECTRICAL WIRING, AND METHODS FOR USING SAME  
Disclosed are systems and methods for monitoring an electrical wire. A safety device utilized to monitor the wire may include at least one current sensing device, at least one voltage sensing...
US20110317320 CONTROLLER, CONTROLLING METHOD, AND SOLAR CELL  
Disclosed is a controller for controlling short-circuit across positive and negative terminals of a dye sensitized solar cell for converting a light energy into an electrical energy. The...
US20100103575 Floating protection circuit and photo-flash capacitor charger thereof  
A floating protection circuit is utilized for a photo-flash capacitor charger. The floating protection circuit includes a comparator and a timer. The comparator is coupled between two feedback...
US20100097736 METHOD AND AN APPARATUS FOR PROTECTING A BUS IN A THREE-PHASE ELECTRICAL POWER SYSTEM  
A method of protecting a bus in a three-phase electrical power system comprises the steps of (a) sampling voltage values and current values of each phase of the or each power system element within...
US20110242716 LOAD CIRCUIT PROTECTION DEVICE  
To provide a protection circuit for a load circuit which can distinguish between an overcurrent generated at a load and a rush current generated at the time of turning on a semiconductor switch or...
US20080012667 Method and system for time synchronized trip algorithms for breaker self protection  
A time-synchronized trip implementation for a motor circuit protector (MCP) having a reconfigurable microcontroller. The microcontroller causes a power supply to, be charged for an initial time...
US20090316318 PROTECTION CIRCUIT FOR LIMITING OPERATING POWER OF ELECTRICAL DEVICE AND METHOD THEREOF  
A protection circuit limits operating power supplied to an electrical device from an electrical power source below a predetermined power rating. The protection circuit comprises a switching device...

Matches 1 - 50 out of 65 1 2 >