Patents
Sitemap › H01 - Basic electric elements › H01F - Magnets; Inductances; Transformers; Selection of materials for their magnetic properties › H01F 30 - Fixed transformers not covered by group
Patents for H01F 30 - Fixed transformers not covered by group (4,595)
11/2008
11/12/2008CN201149809Y Centreless pole magnetic shielding three-coherent type reactor
11/12/2008CN201149800Y Double body structure of reactor
11/12/2008CN101303931A Machine body structure of phase-shifting commutation dry-type transformer and process for manufacturing the same
11/12/2008CN100433209C Lightning protection antiinterference capactive transformer
11/11/2008US7449984 Magnetic element and method of manufacturing magnetic element
11/06/2008WO2008096133A3 An electrical supply system
11/05/2008CN201146101Y Transformer with improved mutual inductance effection
11/05/2008CN101299383A Energy-saving type delta-shaped transformer
11/05/2008CN100431063C Magnetic device
11/04/2008US7446989 Device for protection of the bearing of an electrical machine against damaging passage of current
10/2008
10/30/2008WO2008131007A1 Embedded step-up toroidal transformer
10/30/2008CA2684649A1 Embedded step-up toroidal transformer
10/29/2008CN201142768Y Low-voltage distribution electricity economizer
10/29/2008CN201142268Y High-impedance rectifier transformer for electric precipitation
10/27/2008CA2629240A1 Plasma generator having a power supply with multiple leakage flux coupled transformers
10/23/2008US20080258703 Power Supply With Reduced Power Losses During Standby Mode
10/22/2008CN201138609Y Transformer of industrial frequency
10/22/2008CN201138608Y Novel planar transformer
10/22/2008CN201138607Y Transformer integrated with LLC inductor
10/22/2008CN201138606Y Micro pulse high-voltage transformer
10/22/2008CN201138605Y High-frequency high-power transformer
10/21/2008US7439843 Transformers
10/15/2008CN201134344Y Winding construction of single-phase traction transformer
10/15/2008CN201134343Y Transformer structure
10/15/2008CN201134342Y Self-coupled traction transformer specialized for AT electricity supply
10/15/2008CN201134341Y Intelligent type distributing transformer
10/15/2008CN101286410A Separating type electric power transformer
10/14/2008US7436277 Power transformer
10/09/2008WO2008119935A1 High frequency transformer for high voltage applications
10/08/2008CN201130596Y Heating power supply of variac
10/08/2008CN201130588Y High-efficiency energy-saving environment protection miniature primary-sublevel insulation type high-frequency transformer
10/08/2008CN101282854A Multilevel converter and method of converting a supply voltage
10/08/2008CN101281815A Current balance transformer
10/08/2008CN101281814A Transformer and manufacturing method thereof
10/07/2008US7432699 Transformer with protection against direct current magnetization caused by zero sequence current
10/01/2008CN201126757Y Decomposition transformer core being convenient for transportation and transportation clamping-piece thereof
10/01/2008CN201126755Y Transformer structure capable of improving impedance
10/01/2008CN101277569A Current balancing circuit which can be easy electrical connecting
10/01/2008CN101276683A Inductance component
09/2008
09/25/2008WO2008114370A1 Transformer for use in distribution line carrier system
09/24/2008CN201122906Y Synchronous commutation control circuit
09/24/2008CN201122502Y Combined transformer structure
09/24/2008CN101271763A Integrated type transformer
09/24/2008CN101271756A Hatch coiled iron core oil-immersed type transformer
09/24/2008CN101271755A Dry power transformer
09/23/2008CA2352881C Wire core inductive devices
09/18/2008DE202008009101U1 Messwertgeber-Anordnung zur Kurzschlusserfassung in elektrischen Mittelspannungs-Schaltanlagen Transducer assembly for electrical short-circuit detection in medium voltage switchgear
09/17/2008CN201118245Y Three phase oil immersion type magnetic control reactor
09/17/2008CN201117419Y Minisize transformer
09/17/2008CN201117418Y Converter one-drive-three transformer
09/17/2008CN201117417Y Flow equalizing autotransformer and automatic pressure regulating three phase balancing electricity saver
09/17/2008CN201117401Y Transformer for converter
09/16/2008US7425884 Electrical device and method of producing the same
09/10/2008EP1968177A1 Power conversion device and power conversion system
09/10/2008CN201112115Y Transformer
09/10/2008CN201112114Y Child and mother line frame type transformer
09/10/2008CN201112113Y Transformer integrating with independent inductive element
09/10/2008CN201112112Y High-frequency high-power flat panel transformer
09/10/2008CN201112111Y Card type transformer
09/10/2008CN201112110Y Electric welding machine
09/10/2008CN201112109Y Great current transformer improvement structure
09/10/2008CN201112108Y Energy-saving type variable water-cooled bushing plate transformer
09/10/2008CN201112107Y Transformer capable of supplying multiway exact outputs
09/10/2008CN201112106Y Transformer interface connection device
09/10/2008CN201112074Y Patch transformer
09/10/2008CN201112073Y Transformer with safety creepage distance
09/10/2008CN201112045Y Variable autotransformer adjustment knob
09/10/2008CN101261895A Transformer structure
09/03/2008CN101256891A Extra-high voltage single-phase autotransformer
08/2008
08/27/2008EP1962302A1 Composite transformer and insulated switching power supply
08/21/2008WO2007143605A3 Electromagnetic noise suppression system for wye power distribution
08/21/2008US20080197952 Three-phase Transformer
08/20/2008EP1959460A2 Method for manufacturing a transformer
08/20/2008EP1959459A2 Method for manufacturing a toroidal core
08/20/2008CN101246776A Discharging light tube driving circuit and its transformer
08/16/2008CA2582926A1 Electrical transformer with an integral terminal block
08/13/2008EP1135782B1 Wire core inductive devices
08/13/2008CN101241796A Transformer
08/13/2008CN100411074C Three-phase dry-type transformer
08/07/2008WO2008093492A1 Static induction device fixing structure and fixing member
08/07/2008US20080186749 Ac/Dc Conveter for Aeronautics
08/07/2008US20080186743 DC transformer with an output inductance integrated on a magnetic core thereof and a DC/DC converter employing the same
08/07/2008US20080186119 Electronic transformer used in low-voltage lamps
08/06/2008CN101237736A Lamp tube power supply circuit and its transformer
08/06/2008CN101236826A Insulation system and method for a transformer
08/06/2008CN101236824A Body structure of single-phase traction transformer
08/06/2008CN101236823A Winding structure of single-phase traction transformer
08/06/2008CN101234450A Improved ring shaped high-efficiency direct current arc welding machine
08/05/2008CA2445464C Raised on-chip inductor and method of manufacturing same
07/2008
07/30/2008EP1157454A4 Power supply with flux-controlled transformer
07/30/2008CN101231907A Multi-light tube driving device and transformer thereof
07/23/2008EP1947659A1 Compact power transformer in V-V for electrical traction
07/23/2008CN101226821A High voltage transformer
07/23/2008CN101226817A Compact power transformer in v-v for electrical traction
07/17/2008WO2008084757A1 Shared reactor transformer
07/16/2008EP1833063A9 Magnetic device
07/16/2008CN101222175A Separating power transformer
07/16/2008CN101221305A Backlight unit and transformer using the same
07/09/2008EP1301932B1 High frequency transformer with integrated rectifiers
07/09/2008CN201084536Y A water-cooling three-unit three-phase powerful rectifying transformer for hot-press sintering equipment
1 ... 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 ... 46