Patents
Patents for H02H 9 - Emergency protective circuit arrangements for limiting excess current or voltage without disconnection (21,232)
01/2014
01/07/2014US8624213 Optocoupler circuit for gate driver
01/03/2014WO2013167089A3 High-voltage protection circuit, high-voltage protection method and power supply
01/02/2014US20140005053 Current-rise limitation in high-voltage dc systems
01/02/2014US20140002943 Dc grid and a method of limiting the effects of a fault in a dc grid
01/02/2014US20140002934 Latch-up immune esd protection
01/02/2014US20140002932 Switching Regulator with Negative Current Limit Protection
01/02/2014US20140001600 Diode String
01/02/2014US20140001368 Esd protection system and x-ray flat panel detector
01/02/2014DE102012105630A1 Beleuchtungsvorrichtung, Beleuchtungsanordnung mit Beleuchtungsvorrichtung und Verfahren zum Betreiben einer Beleuchtungsvorrichtung Illumination device, the illumination assembly with lighting apparatus and method of operating a lighting device
01/01/2014EP2680386A1 Reduction of Inrush Current Due to Voltage Sags by Impedance Removal Timing
01/01/2014EP2678913A2 Device for protecting electric equipment from overvoltage and lightening
01/01/2014EP2678912A1 Surge protection circuit and method for testing a surge protection circuit
01/01/2014CN203377899U Wireless network bridge application device of omnidirectional antenna
01/01/2014CN203377601U Standby transformer reactive power compensator capable of adjusting power factor
01/01/2014CN203377596U Lightning protection circuit capable of protecting RS485 communication signal
01/01/2014CN203377595U Lightning protection circuit capable of protecting RS422 communication signal
01/01/2014CN203377594U Multifunctional power switch
01/01/2014CN203377593U Overvoltage protection device of SDI transmission system
01/01/2014CN203377592U Plugging protection module-contained surge protector with capability of signal uninterruption
01/01/2014CN203377591U lightning protection apparatus having intelligent degradation alarm system
01/01/2014CN103493322A Method for controlling a current-interrupting device in a high-voltage electrical network
01/01/2014CN103491669A Device for generating electromagnetic radiation and electronic front connecting device
01/01/2014CN103490406A Arc extinction device for solving problem of interphase short circuit according to full resistance method
01/01/2014CN103490405A Method for automatically controlling capacity modulating type arc suppression coil
01/01/2014CN103490404A Tuning method of following-setting-type arc suppression coil of power distribution network system and fault line selection method
01/01/2014CN103490403A Method and systems for discharging energy from an electrical fault
01/01/2014CN103490402A Photovoltaic module grounding device, photovoltaic module grounding monitoring device and monitoring method
01/01/2014CN103490401A Misoperation-preventive locking power board
01/01/2014CN103490400A Distributed level overvoltage control system and method
01/01/2014CN103490399A 保护电路 Protection circuit
01/01/2014CN103490398A Direct axis current protection method and device for PMSM (permanent magnet synchronous motor) transmission system
01/01/2014CN103490397A Current output type safe isolated gate
01/01/2014CN103490396A Current limiting circuit
01/01/2014CN103490395A Method for limiting line short-circuit currents by using twin-core controllable phase shifter
01/01/2014CN103490283A Square gas switch with multiple gaps connected in parallel and discharge circuit comprising same
01/01/2014CN103489572A Transformer with lightning protection function
01/01/2014CN103489563A Automatic safety discharging device and safety discharging method for demagnetizing equipment
01/01/2014CN103481835A Vehicle-mounted electronic device
12/2013
12/31/2013US8619402 Data port transient protection apparatus and methods
12/31/2013US8619401 Current source regulator
12/31/2013US8619400 Circuitry to prevent overvoltage of circuit systems
12/31/2013US8619397 Non-linear power management device for input power protection
12/31/2013US8618775 Detection of over-current shorts in a battery pack using pattern recognition
12/31/2013CA2693415C Discrete hot swap and overcurrent-limiting circuit
12/27/2013WO2013189314A1 Protection circuit of communication interface
12/27/2013WO2013189152A1 Electrostatic discharge protection circuit, array substrate, and display device
12/26/2013US20130343537 Frame injected dsl via face fed protector module
12/26/2013US20130342949 Lightning protection radio remote unit, distributed base station, lightning protection system and method
12/26/2013US20130342948 A protection system for an it electrical distribution system having a floating reference conductor
12/26/2013US20130342941 Sige based gate driven pmos trigger circuit
12/26/2013US20130342940 Electrostatic discharge protection circuit
12/25/2013EP2677616A1 Interface unit comprising an overcurrent and overvoltage protection device
12/25/2013EP2676347A1 Electronic device and protection element therefor, for use in potentially explosive areas
12/25/2013CN203368505U Gateway communication circuit used for electric power steering system
12/25/2013CN203368334U Intelligent quick-responsive three-phase variable-frequency electric control system suitable for electromagnetic stirrerS
12/25/2013CN203368022U Single-phase grounding fault fundamental wave current full compensation device
12/25/2013CN203368021U Protection circuit for set top box
12/25/2013CN203368020U Brake device used for wind power generation current transformer system
12/25/2013CN203368019U Overvoltage protection circuit for AC directly driven LED circuit
12/25/2013CN203368018U High-capacity explosion-proof intelligent voltage-limiting apparatus
12/25/2013CN203368017U Improved structure of lightning protection circuit
12/25/2013CN203368016U Overload current-limiting protection circuit
12/25/2013CN203368015U A surge inhibition current protective device
12/25/2013CN203368014U Soft start protection device and compressor diagnosis protection device comprising same
12/25/2013CN203363970U Wind and light complementary control device for street lamp
12/25/2013CN103477523A 浪涌保护装置 Surge protection devices
12/25/2013CN103477522A Device for protecting electric equipment from overvoltage and lightening
12/25/2013CN103475238A Voltage conversion circuit
12/25/2013CN103474987A Electric transmission line on-line monitoring device energy obtaining system based on ground wire induction
12/25/2013CN103474982A Arc extinction device for eliminating interphase short circuit in single-resistance method
12/25/2013CN103474981A Distribution network single-phase ground protection method based on zero-sequence current sequential overlapping derivative transformation direction
12/25/2013CN103474980A Transient-power-direction-based single-phase grounding protection method for power distribution network
12/25/2013CN103474979A Arc suppression coil device of active and full compensation
12/25/2013CN103474978A Application of lightning protection technology on aspect of video monitoring
12/25/2013CN103474977A Lightning protection device, lightning protection combination and lightning protection cabinet
12/25/2013CN103474976A Network cable lighting-prevention conversion device
12/25/2013CN103474975A Lightning-protection nanometer magnet choke device
12/25/2013CN103474952A Short-circuit protection device for power frequency current and lightning surge automatic selection channel
12/25/2013CN103474405A Electromagnetic interference prevention overvoltage protection device
12/25/2013CN103473203A USB (universal serial bus) interface circuit with electrostatic protection
12/25/2013CN102637054B 50-ampere power consumption balanced-type high-power constant-current source
12/25/2013CN102057551B Protecting apparatus
12/25/2013CN101626156B Overvoltage protection element
12/25/2013CN101540498B Method and device for controlling non-setting inrush current of high-voltage switch
12/24/2013US8614872 Switching power source apparatus
12/24/2013US8614871 Battery system
12/24/2013US8614867 Power supply for an electronic tripping unit for a switch, in particular a circuit breaker for low voltages, and a switch having a power supply such as this
12/24/2013US8614866 Hybrid switch circuit
12/24/2013DE102012209781A1 Vorrichtung zum erzeugen von elektromagnetischer strahlung und elektronisches vorschaltgerät An apparatus for generating electromagnetic radiation and electronic ballast
12/24/2013DE102011050346B4 Verfahren und Schaltungsanordnung zur Fehlerdiagnose in isolierten Hoch- und Mittelspannungsnetzen Method and circuit for fault diagnosis in isolated high and medium voltage networks
12/24/2013DE102006034168B4 Gekapselter Überpannungsabeiter für den Einsatz als Netzfunkenstrecke im Niederspannungsbereich mit getrennten, elektrisch in Reihe geschalteten Funktionseinheiten Sealed Überpannungsabeiter for use as power spark gap in the low voltage range with separate electrically connected in series functional units
12/19/2013WO2013187994A1 Method and apparatus to improve esd robustness of power clamps
12/19/2013WO2013187293A1 Esd protection device
12/19/2013US20130335874 Electronic device
12/19/2013US20130335873 Overvoltage protection circuit and method thereof
12/19/2013US20130335871 Electrostatic discharge protection device and composite electronic component including the same
12/19/2013US20130335870 Electrostatic protection circuit and semiconductor device
12/19/2013US20130335869 Overvoltage protection devices including wafer of varistor material
12/19/2013US20130335868 Method and Apparatus to Improve ESD Robustness of Power Clamps
12/19/2013US20130335867 Charge injection and drain-based electrical overstress (eos) protection apparatus and method
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