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)
03/2010
03/24/2010CN201430066Y Variable-frequency transformer
03/24/2010CN101681717A High frequency transformer for high voltage applications
03/24/2010CN101677030A Device for converting electric energy
03/17/2010CN201425884Y Stereoscopic triangular iron core combined transformer
03/17/2010CN201425883Y Large-capacity combined power transformer
03/17/2010CN101673618A A double-inductance structure
03/17/2010CN101673610A Transformer, spiral plate winding thereof and method for assembling same
03/17/2010CN101671163A Ltcc layer stack
03/11/2010WO2010027290A1 Wound delta magnetic core for three phase transformer
03/11/2010WO2010026898A1 Wound iron core for static apparatus, amorphous transformer and coil winding frame for transformer
03/10/2010EP2160743A1 Modular transformer
03/10/2010CN201421773Y Isolating terminal employing flat plate-type transformer
03/04/2010WO2010024153A1 Three-phase high frequency transformer
03/03/2010CN201417671Y Multi-group output converter transformer
03/03/2010CN201417669Y Oil insulation testing transformer
02/2010
02/26/2010CA2638667A1 Method and apparatus for spacecraft propulsion with a field shield protection
02/25/2010DE202008013649U1 Regelbarer Dreiphasen-Schweißtransformator Adjustable three-phase welding transformer
02/24/2010EP2156449A1 High frequency transformer for high voltage applications
02/24/2010CN201414000Y Intelligent controlled electrical pole crossover filtering electricity economizer
02/24/2010CN201413766Y 110kv power transformer with automatic reactive power compensation voltage regulating function
02/24/2010CN201413758Y Cast resin reel iron core transformer
02/17/2010CN201408635Y Transformer using input quantity and balancing winding to balance three-phase input
02/17/2010CN101651032A Choke device for frequency converter
02/17/2010CN101651031A Combined structure of transformer, system circuit board and auxiliary circuit board
02/17/2010CN101651030A Autotransformer with low-voltage compensation
02/11/2010WO2010016367A1 Composite electronic component
02/10/2010CN201402730Y Novel transformer structure
02/10/2010CN201402729Y Two-in-one balancing transformer with special iron core structure
02/10/2010CN201402728Y Two-in-one balancing transformer with protection device
02/10/2010CN201402718Y Three-phase high voltage coil of resin pouring tridimensional dry-type transformer
02/10/2010CN201402715Y Soldering machine transformer structure
02/10/2010CN101645348A Three-phase dry-type transformer for wind power generation
02/10/2010CN101645347A Transformer structure
02/04/2010WO2010013049A1 Multi-toroid transformer
02/04/2010DE102008035529A1 Three-phase alternating current motor i.e. asynchronous motor, controlling device, has brackets symmetrically arranged around cores, and air gaps provided between brackets and yokes, where radial gap width is seen or removed in direction
02/03/2010CN201397734Y Multi-split rectifier transformer
02/03/2010CN101640120A Transformer changing from three phases to single phase
02/03/2010CN101640119A Underwater non-contact type separable transformer for electric energy transmission based on butterfly magnetic core
02/03/2010CN101640118A Prismatic transformer
02/03/2010CN100587864C Single-phase traction transformer for AT power supply mode high speed electrified railroad
01/2010
01/27/2010EP2147446A1 Embedded step-up toroidal transformer
01/27/2010CN101635198A 36-pulse high-power frequency conversion rectifier transformer
01/27/2010CN100585758C Power transformer combined with balance winding and its application circuit
01/26/2010US7652551 Toroidal inductive devices and methods of making the same
01/20/2010CN201388328Y Transformer drive circuit and liquid crystal display device thereof
01/20/2010CN201388005Y Multi-machine transformer for remote control of oilfield pumping unit
01/20/2010CN201387802Y Plane transformer
01/20/2010CN201387801Y High-power autotransformer
01/20/2010CN101630585A Distributed winding flexible transformer by mixed winding of magnetic conductive wire and electrical wire
01/13/2010EP2144259A2 Interphase transformer
01/13/2010CN201383433Y Dry-type single-phase boosting transformer
01/13/2010CN201383416Y Connection structure of variac winding
01/13/2010CN101625922A Multiple high-voltage rectifying transformer
01/12/2010US7646275 Device and method for eliminating transformer excitation losses
01/07/2010WO2009138116A8 Polygonal transformer core
01/06/2010CN201378505Y Double-voltage transformer
12/2009
12/30/2009WO2009124319A3 Low harmonic rectifier circuit
12/30/2009CN201374243Y Three-phase five-column rectifier transformer
12/30/2009CN101615498A Transformer
12/30/2009CN100576378C Planar transformer
12/23/2009CN201369233Y Ring-shaped transformer
12/23/2009CN201369232Y Planar transformer
12/23/2009CN201369231Y Improvement structure of two-in-one transformer
12/23/2009CN201369230Y Improvement structure of two-in-one transformer
12/16/2009CN100570768C Transformer structure
12/16/2009CN100570764C Transformer apparatus, method for manufacturing the same, and high-frequency heating device having the same
12/15/2009US7633369 Extended E matrix integrated magnetics (MIM) core
12/15/2009US7633262 Power supply for underground and pad mounted power distribution systems
12/10/2009WO2009147574A1 Rotary power transformer for use in a high-voltage generator circuitry for inductively transmitting two or more independently controllable supply voltages to the power supply terminals of a load
12/10/2009WO2009146835A2 Transformer
12/10/2009DE102008026810A1 Circuit arrangement for use in testing and measuring amplifier to parallelly connect alternating voltage sources to common load, has terminals that are attached to one of voltage sources and arranged at distance from common winding terminal
12/09/2009CN201359920Y Grounding transformer with adjustable zero-sequence impedance
12/09/2009CN201359919Y Plane winding device
12/09/2009CN201359918Y Electromagnet power switching circuit for industrial sewing machine
12/09/2009CN201359903Y Liquid magnetic filled high-frequency transformer
12/09/2009CN101599353A Integrated filter inductance transformer
12/09/2009CN101599351A Dual-pressure transformer
12/09/2009CN101599348A Series-parallel connection device for dual-winding double-splitting three-phase transformer
12/09/2009CN101599347A Coil plates and production method thereof as well as method for producing multi-layer planar transformer
12/09/2009CN101599346A Low-loss high-impedance electric power transformer
12/08/2009US7629786 Device for reducing harmonics in three-phase poly-wire power lines
12/02/2009CN201355571Y Flyback transformer
12/02/2009CN101595539A Static induction device fixing structure and fixing member
12/02/2009CN101593617A Oil-immersed type single-phase step-up transformer
12/02/2009CN101593616A Transformer and direct current-to-direct current transducer
11/2009
11/26/2009DE10139071B4 Wandlervorrichtung Conversion device
11/25/2009CN201352492Y Transformer structure
11/25/2009CN101587771A Transformer structure
11/25/2009CN100562953C Inverter transformer
11/25/2009CN100562952C Transformer for switching power supply
11/19/2009WO2009138116A1 Polygonal transformer core
11/19/2009WO2009138101A1 Modular ring-shaped core
11/19/2009WO2009138099A1 Coupling of transformer winding modules
11/19/2009WO2009138098A1 Polygonal transformer core
11/19/2009CA2723256A1 Modular ring-shaped core
11/18/2009CN201348927Y Combined type transformer and multiple lamp tubes driver circuit
11/18/2009CN201348926Y High performance energy-saving electricity theft-proof integrated transformer device special for oil well
11/18/2009CN201348915Y Completely self-protecting mono-phase pole-type transformer
11/18/2009CN101582324A Transformer structure
11/11/2009CN201345284Y High-frequency transformer for loop resistance tester
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