Matches 1 - 41 out of 41


Match Document Document Title
US20120176715 RESISTANCE DETERMINING SYSTEM FOR OVER VOLTAGE PROTECTION CIRCUIT  
A resistance determining system for an over voltage protection (OVP) circuit, includes an external power source, a microcontroller, a digital rheostat and a display unit. The external power source...
US20130170086 OVERVOLTAGE PROTECTION CIRCUIT AND PORTABLE ELECTRONIC DEVICE COMPRISING SAME  
An overvoltage protection circuit is configured to protect a battery pack from overvoltage when the battery pack is in charge. The overvoltage protection circuit includes a power supply, an...
US20130038973 Over Voltage Protection Circuit and Electronic System for Handling Hot Plug  
An over voltage protection circuit is disclosed. The over voltage protection circuit comprises an input end, coupled to an input power, for receiving an input voltage provided by the input power;...
US20120075760 PROTECTION OF AN ELECTRONIC EQUIPMENT  
A device for protecting electronic equipment having an output terminal includes an electronic breaker switch linked between the output terminal and ground, and a protection means which protects...
US20120092800 CIRCUIT FOR DETECTING OVER-VOLTAGE AND OVER-CURRENT  
A circuit adapted for detecting over-voltage and over-current includes a first voltage-dividing resistor having one terminal connected with a DC power circuit and the other terminal connected to...
US20080198524 ABSORPTION GAS ARRESTOR SYSTEM  
The subject application relates to a gas arrestor system(s) and/or methodology that facilitate sensing and shutting down a gas-burning appliance via a circuit that can perform both functions. In...
US20120281326 EFFICIENT INPUT VOLTAGE SENSING TECHNIQUE  
This document discusses, among other things, systems and methods for detecting a charging current from a startup circuit to a controller without power loss from a voltage divider, and for...
US20140022683 DEVICE FOR PROTECTING ELECTRIC EQUIPMENT FROM OVERVOLTAGE AND LIGHTENING  
An electric equipment protection device includes a first conducting line and a second conducting line, connectable to a power source to receive a supply voltage of a rated value; at least one...
US20130135781 ELECTRICAL SWITCHING APPARATUS WITH OVERVOLTAGE PROTECTION  
An electrical switching apparatus includes a first terminal, a second terminal, a neutral conductor, separable contacts electrically connected between the terminals, an operating mechanism to open...
US20080002324 Circuit arrangement with at least two semiconductor switches  
A circuit arrangement includes plural semiconductor switches, at least one overvoltage protection arrangement and a coupling circuit. Each of a first semiconductor switch and a second...
US20140313626 PROGRAMMABLE HIGH VOLTAGE ENERGY SAVING SYSTEM  
A programmable system includes a first level protection circuit comprised of discharge tube CR1/CR2 and piezoresistor MOV1/MOV2 in series; a second-level protection circuit comprised of the series...
US20150171617 APPARATUS FOR SWITCHING IN A DC VOLTAGE GRID  
An apparatus for switching in a DC voltage mains has a switching device for interrupting the flow of current in at least one line of the DC voltage grid. The switching device is connected into the...
US20110292555 MEASURING TRANSIENT ELECTRICAL ACTIVITY IN AIRCRAFT POWER DISTRIBUTION SYSTEMS  
An electrical power distribution system for an aircraft comprises a power source electrically connected to an electrical load and at least one circuit interruption device for interrupting current...
US20090086395 INPUT VOLTAGE CLAMP FOR A SINGLE-SUPPLY SYSTEM  
A system, apparatus and a method are described that provide a voltage clamp for a single-supply system. In particular, a negative voltage clamp prevents a negative over-voltage in a system having...
US20060164771 Device for transmitting, exchanging and/or routing data and/or information  
A device for transmitting, exchanging and/or routing data and/or information, in the context of industrial process and/or automation technology, between a first unit and at least a second unit....
US20110032652 MAGNETIC ENERGY RECOVERY SWITECH HAVING PROTECTIVE CIRCUIT  
In order to protect Magnetic Energy Recovery Switch (MERS) against an overvoltage and an overcurrent a voltage detection unit is provided for detecting the capacitor voltage of the MERS and...
US20140002940 Open Neutral Protection  
A switching device is configured to connect a split-phase power source to a load. The split-phase power source includes a first hot lead, a second hot lead, and a neutral lead. When the...
US20130335872 SYSTEM AND METHOD FOR CONTROLLED OVERVOLTAGE DETECTION  
An overvoltage detection system includes a sensed voltage; an active reference module that generates an active reference signal having a magnitude that varies inversely with a magnitude of the...
US20090323241 Input Protection Method with Variable Tripping Threshold and Low Parasitic Elements  
Various embodiments of an input protection circuitry may be configured with a variable tripping threshold and low parasitic elements, which may prevent a signal from propagating into the protected...
US20130335873 OVERVOLTAGE PROTECTION CIRCUIT AND METHOD THEREOF  
The overvoltage protection circuit in accordance with the present invention includes a resistor divider, a reference voltage supply unit, a comparator, and an inverter, wherein the inverter...
US20110267730 OVERVOLTAGE PROTECTOR  
An overvoltage protector having a housing and at least one overvoltage limiter arranged in the housing, especially a gas-filled surge arrester (1), a suppressor diode (2) or a varistor. The...
US20140247529 Apparatus And Method for Water Protection Of An Electronic Device  
An apparatus comprises a sensor having a sensing film and at least two electrodes; and a plurality of electronic components operably associated with the sensor. The sensing film is configured to...
US20140285937 CIRCUIT AND METHOD OF OVER-VOLTAGE PROTECTION  
A circuit and method of over-voltage protection is provided to prevent the power supply to provide an exorbitant voltage to the electronic cigarette, the electronic cigarette case or the...
US20090109831 SEMICONDUCTOR LASER DEVICE PROTECTION CIRCUIT, OPTICAL PICKUP APPARATUS, AND INFORMATION RECORDING/REPRODUCING APPARATUS  
A semiconductor laser device has a cathode grounded and an anode connected to a collector of a transistor. The transistor has an emitter grounded and a base connected to a first external terminal...
US20110134577 OVER-VOLTAGE PROTECTION  
A device may include a switch and a circuit coupled to the switch. The switch may include a structure with a top portion and a bottom portion and a material included within the structure. The...
US20100254057 OVERLOAD POWER CUT-OFF DEVICE AND METHOD THEREOF  
An overload power cut-off device is provided in an electric auxiliary system for avoiding overload in the system. The device includes a current detecting unit, a voltage comparing unit, an alarm...
US20100165530 Reformed inductor, a surge protection device and a surge protector  
A reformed inductor, a surge protection device, and a surge protector with the reformed inductor and the surge protection device are disclosed. The surge protector includes a main body, a power...
US20170063078 Monitoring Circuit and Electronic Device  
A monitoring circuit includes a configuration interface, a control circuit, a detection circuit, a direct current voltage source, a switch circuit, and a first resistor. A first end of the...
US20160380428 VOLTAGE LIMITER  
A voltage limiter includes first and second DC terminals connectable to a DC power transmission medium and ground, respectively. The voltage limiter further includes: (1) a current transmission...
US20160352093 OVERVOLTAGE PROTECTION DEVICE WITH LEAKAGE CURRENT CUT-OFF  
The invention relates to an overvoltage protection device with leakage current cutoff, having a parallel connection of a first current branch and a second current branch, wherein the first current...
US20160204599 ARRANGEMENT FOR OVERLOAD PROTECTION FOR OVERVOLTAGE PROTECTION EQUIPMENT  
The invention relates to an arrangement for overload protection for overvoltage protection equipment that has at least one voltage-limiting element and at least one voltage-switching element, and...
US20160126723 PROTECTION CIRCUIT OF SEMICONDUCTOR DEVICE  
A protection circuit of a semiconductor device includes a high electron mobility transistor and a protection element. Between the drain and the gate of the high electron mobility transistor, the...
US20160064918 OUTPUT SHORT CIRCUIT PROTECTING DEVICE  
An output short circuit protecting device electrically connected to a power supplying device includes a first output short circuit protecting unit. The first output short circuit protecting unit...
US20160049786 GaN OVERVOLTAGE PROTECTION CIRCUIT  
A gallium-nitride based power transistor is coupled to a voltage source that has transient overvoltage conditions exceeding the allowable withstanding voltage of the power transistor. An...
US20160006235 ANTI-LIGHTNING STROKE OVERCURRENT PROTECTION SWITCH  
An anti-lightning stroke overcurrent protection switch comprises an overcurrent protection switch with an overvoltage protection sensor disposed inside and operated by one of the conductive...
US20150372472 DISCONNECTION INDICATOR OF AN ACTIVE COMPONENT OF A DEVICE FOR PROTECTING AN ELECTRICAL INSTALLATION  
A device for protecting an electrical installation including an insulating body electrically defining an internal housing, the protective device including, within the internal housing: an active...
US20150364916 SURGE PROTECTION DEVICE FOR MULTI-PROTECTION MODE COMMUNICATIONS  
The present invention relates to a surge protection device for multi-protection mode communications, comprising: an input line into which a voltage is introduced; an output line connected to an...
US20150333499 Systems and Methods to Protect an Energy Utility Meter from Overvoltage Events  
A device may include a sensor. The sensor may detect usage of electric power. Additionally, the device may include a fusible surge resistor coupled in series with the sensor, and a thermal metal...
US20150288176 IGNITION CIRCUIT  
The object of the invention is an ignition circuit for a series connection of at least two spark gaps for limiting overvoltages with medium and high power, particularly overvoltages corresponding...
US20150280420 SURGE SUPPRESSION DEVICE  
A surge suppression device is disclosed comprising a voltage sensitive element, heat sensitive materials, a second terminal, and a conductive metal plate, which are substantively connected in...
US20130155560 Semiconductor Device  
In a semiconductor device, a surge voltage is lowered on turning OFF of a switching element, and output current is reduced on turning ON of the switching element in a non-saturated condition to...

Matches 1 - 41 out of 41