Patents
Patents for H02H 9 - Emergency protective circuit arrangements for limiting excess current or voltage without disconnection (21,232)
12/2012
12/12/2012CN202602268U Power-saving filter
12/12/2012CN202602267U High-voltage heavy-current transient automatic discharge switch with preset gap
12/12/2012CN202602266U Backup protection type surge protector
12/12/2012CN202602265U Positive temperature coefficient thermal sensitive resistor and power resistor thermal coupled apparatus
12/12/2012CN202602264U Anti-interference microcomputer protective relaying device
12/12/2012CN202602252U Device for suppressing direct current at neutral point of transformer by adjustable resistor method
12/12/2012CN102823099A Power source switch device and power source system provided with same
12/12/2012CN102820655A Control method of voltage support and fault current limit compatible power electronic system
12/12/2012CN102820654A Cooperative control method of power electronic system
12/12/2012CN102820651A Intelligent motor electricity saver
12/12/2012CN102820645A High-precision overvoltage protection circuit and switch power circuit with multiplexed output
12/12/2012CN101969194B Interface anti-static method, anti-static protection circuit and electrical equipment
12/12/2012CN101795515B Started overshoot current suppression circuit
12/12/2012CN101626155B Outdoor alternating current power supply lightening protector
12/11/2012US8331072 Timer controlled, short and open circuit fault detection with slew-rate boosted output driver
12/11/2012US8331069 Structure for protecting an integrated circuit against electrostatic discharges
12/11/2012US8331068 ESD protection for FinFETs
12/11/2012US8331067 Method and apparatus for moving material
12/06/2012WO2012166374A1 Static surge protection device
12/06/2012WO2012163398A1 System for distributing electric power to an electrical grid
12/06/2012WO2012163150A1 Lightning protection system
12/06/2012US20120307408 Semiconductor device with a plurality of power supply systems
12/06/2012US20120307407 Semiconductor device
12/06/2012US20120307406 Semiconductor integrated circuit
12/06/2012US20120307405 Integrated circuit having electrostatic discharge protection
12/06/2012US20120306600 Magnetic Actuator With Multiple Air Gaps
12/06/2012CA2834687A1 Static surge protection device
12/05/2012EP2530804A1 Improved ground fault handling in power distribution systems with mixed underground and aerial power lines
12/05/2012CN202587469U Light fixture switch control circuit
12/05/2012CN202586775U Multi-functional lightning resisting power supply
12/05/2012CN202586371U Power grid fault isolation system used for clean energy grid-connection
12/05/2012CN202586335U Motor energy storage protection device of high-voltage switch spring operating mechanism
12/05/2012CN202586334U Arc and resonance extinction and overvoltage protection device
12/05/2012CN202586333U A moistureproof overvoltage protector
12/05/2012CN202586332U Strong type large through-flow capacity surge protector
12/05/2012CN202586331U Constant current source protection circuit
12/05/2012CN202586330U Electricity-limiting circuit with lightning protection function
12/05/2012CN202586329U Self-discharge circuit
12/05/2012CN202586328U Nested lightning protection device for single-phase power source
12/05/2012CN202586327U Charge pump output protection driving device for near field communication (NFC) emission device
12/05/2012CN202586326U Switching value acquisition circuit
12/05/2012CN202586325U Lightning-protection surge-proof power source protection device
12/05/2012CN202586324U Lightning protection alarm device
12/05/2012CN202586323U Over-voltage and over-current protection circuit for input port of television
12/05/2012CN202586322U Tripping type lightning protection circuit
12/05/2012CN202586321U Surge protection device
12/05/2012CN202586320U Surge protector
12/05/2012CN202586319U Processing circuit of phase-shifting full-bridge diode peak in vehicle-mounted charger
12/05/2012CN202586318U Abrupt change overvoltage inhibition device for electronic voltage transformer
12/05/2012CN202586317U A high-capacity combined overvoltage protector
12/05/2012CN202586316U Angle form overvoltage protection device
12/05/2012CN202586315U Withstand voltage circuit and thermal film bakeware appliance
12/05/2012CN202586314U Centralized low voltage ride-through correction system
12/05/2012CN202586313U Overcurrent protection circuit for insulated gate bipolar transistor and inductive load control circuit
12/05/2012CN202586312U Coupled solid-state current limiter of single-phase multiple-winding transformer
12/05/2012CN202586311U Coupled-mode solid-state current limiter of three-phase multi-winding transformer
12/05/2012CN202586310U Ground protection device for power brake of mobile electrical equipment
12/05/2012CN202586308U Comprehensive grounding protective device for microcomputer
12/05/2012CN202586297U Overvoltage-protection Li-ion battery charger protector
12/05/2012CN202585749U Electricity protector
12/05/2012CN102810864A Comprehensive treatment device of electric energy quality of low-voltage distribution network
12/05/2012CN102810854A Protection circuit
12/05/2012CN102810853A Grounding device for contact rail and control method
12/05/2012CN102810852A Semiconductor device
12/05/2012CN102810851A Over-current protective circuit and digital output circuit
12/05/2012CN102810850A Method for protecting overload running of electric motor
12/05/2012CN102810849A Undervoltage protection system
12/05/2012CN102810848A Power supply protection circuit
12/05/2012CN101969195B Transformer direct current magnetic bias compensation device with reactive power compensation function and control method
12/05/2012CN101753055B Harmonic ratio calibrator
12/04/2012US8325455 Voltage surge and overvoltage protection with RC snubber current limiter
12/04/2012US8325453 Short-circuit protection for switched output stages
12/04/2012US8325451 Power switching circuit
12/04/2012CA2677777C Parallel connected hts fcl device
11/2012
11/29/2012WO2012161830A1 Overcurrent protection system
11/29/2012WO2012161615A1 Lightning protection device for a high-voltage overhead line (variants) and high-voltage overhead line equipped with such a device
11/29/2012WO2012161277A1 Superconducting element for superconducting current limiter, method for manufacturing superconducting element for superconducting current limiter, and superconducting current limiter
11/29/2012WO2012159668A1 Inrush current control in a cell-based voltage source converter
11/29/2012WO2012159626A1 Plug connector, use thereof for protecting an electrical system against surge discharge, and method for the production thereof
11/29/2012WO2012159358A1 Lightning protection radio remote unit, distributed base station and lightning protection system and method thereof
11/29/2012US20120300606 Current Driver Damping Circuit
11/29/2012US20120300350 Gradually reducing resistive clamp
11/29/2012US20120300349 Gate dielectric breakdown protection during esd events
11/29/2012US20120300348 Circuit breaker panel
11/29/2012CA2834106A1 Plug connector and its use for protecting an electrical system against overvoltage discharge as well as a method for its manufacture
11/28/2012EP2526602A2 Superconducting fault current-limiter with variable impedance shunt coil
11/28/2012CN202565018U Mixing neutral-point grounding system
11/28/2012CN202564940U Arc suppression coil device
11/28/2012CN202564939U Compensation electrical network single-phase grounding zero sequence equivalent circuit
11/28/2012CN202564938U Computer lightning arrester
11/28/2012CN202564937U Signal lightning protection device
11/28/2012CN202564936U Lightning protection module of power source
11/28/2012CN202564935U Lightning arrester
11/28/2012CN202564934U Explosion proof type LED illumination lamp filter capacitor discharge circuit
11/28/2012CN202564933U Power supply device
11/28/2012CN202564932U Protection circuit for eddy current retarder controller
11/28/2012CN202564798U Intelligent harmonic and arc extinction switch cabinet
11/28/2012CN202561958U Novel air conditioner power saving protective device
11/28/2012CN102804538A Power supply protection circuit and motor drive device provided with same
11/28/2012CN102804526A Coaxial Broadband Surge Protector
1 ... 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 ... 213