Patents
Sitemap › H01 - Basic electric elements › H01F - Magnets; Inductances; Transformers; Selection of materials for their magnetic properties › H01F 3 - Cores, yokes or armatures
Patents for H01F 3 - Cores, yokes or armatures (3,764)
09/2003
09/16/2003US6621183 Supply of power to primary conductors
09/12/2003WO2003075403A1 Antenna coil
09/10/2003CN1441446A Press powder magnetic core and choke using said magnetic core
09/09/2003US6617950 Common mode/differential mode choke
09/03/2003EP0968504B1 Electrical choke
08/2003
08/28/2003US20030160677 Powder core and reactor using the same
08/26/2003US6611187 Magnetic core, coil assembly and power supply circuit using the same
08/21/2003WO2003008539A3 Non-alloying core shell nanoparticles
08/14/2003US20030150523 Powder core and high-frequency reactor using the same
08/13/2003EP1335391A1 Nanocrystalline toroidal core
08/13/2003EP1334495A1 Ferrite core with a novel construction
08/13/2003EP0901706B1 A method and a device for reducing third harmonic phenomena in a rotating electric alternating current machine
08/13/2003CN1436352A Bulk amorphous metal magnetic component
08/13/2003CN1435854A Coil packaged magnetic dust core capable of obtaining excellent inductive property and mfg. method thereof
07/2003
07/30/2003CN1433033A Inductance part with permanent magnet set in magnetic gap
07/29/2003US6600402 Bobbins, transformers, magnetic components, and methods
07/24/2003WO2003060935A1 Transformer
07/24/2003WO2003060932A1 Method for controlling flux of electromagnet and an electromagnet for carrying out said method (variants)
07/24/2003WO2003060930A1 Powder magnetic core and high frequency reactor using the same
07/24/2003CA2472024A1 Method for controlling flux of electromagnet and an electromagnet for carrying out said method (varients)
07/23/2003EP1330015A1 Magnetic core, coil component comprising it, and power source circuit
07/22/2003US6597271 Electromagnetic apparatus having adjusting effective core gap
07/16/2003CN1430787A Electromagnet core, method of manufacturing electromagnet core, and elevator hoist brake utilizing electromagnet core
07/15/2003US6593836 Bobbins, transformers, magnetic components, and methods
07/10/2003US20030129608 Non-alloying core shell nanoparticles
07/10/2003US20030128091 Transformer
07/09/2003CN1428796A Winding-core type choke, winding-core type converter and their mfg. method
07/08/2003US6590485 Magnetic core having magnetically biasing bond magnet and inductance part using the same
07/08/2003US6590385 Variable reluctance sensor assembly with magnetic spool
07/03/2003US20030121392 Automatic iron core air gap cutting apparatus
07/02/2003CN2559083Y Silicon steel sheet capable of stacking and locating
06/2003
06/26/2003WO2003052322A1 Electronic ignition circuit for oil burners
06/26/2003US20030116671 Drum type core with discrete structure
06/26/2003US20030115742 Magnetic circuit with coil
06/25/2003EP1321950A1 Permanent magnet, magnetic core having the magnet as bias magnet, and inductance parts using the core
06/25/2003EP1320858A1 A method of manufacturing an inductor
06/24/2003US6583701 Inductor with variable air-gap separation
06/24/2003US6583698 Wire core inductive devices
06/19/2003US20030112111 Three-phase transformer
06/18/2003EP1319234A2 Planar inductive element
06/17/2003US6580348 Flat magnetic core
06/17/2003US6579383 Powder magnetic core
06/12/2003DE20304499U1 Laminated core of silicon steel for electrical transformers and inductances has U-shaped laminates grouped together and having arms with different lengths
06/11/2003EP1318529A2 Surface hardened soft magnetic actuator part and fabrication process
06/04/2003CN1110826C Magnet core and its making method and equipment
05/2003
05/28/2003EP1315181A1 Transformer
05/28/2003CN1420988A Sensor for measuring direct current and measuring method
05/28/2003CN1420505A 变压器 Transformer
05/22/2003WO2003043034A1 Controlled induction device and method of manufacturing
05/22/2003WO2003043033A1 Inductive component and method for producing same
05/22/2003US20030095026 Transformer
05/22/2003US20030094304 Insulated conductor for high-voltage windings
05/22/2003CA2466706A1 Controlled induction device and method of manufacturing
05/15/2003WO2003041247A1 Motionless electromagnetic generator
05/15/2003US20030090355 Transformer core
05/13/2003US6563474 Remote access device having multiple inductive coil antenna
05/08/2003WO2003038959A1 Rod coil for ignition systems
05/07/2003CN2549572Y Coiled iron core
05/01/2003US20030080844 Wire-wound coil
04/2003
04/30/2003CN1415111A Power conversion system utilizing wire core inductive devices
04/24/2003US20030078005 Apparatus and methods for noise suppression in communications systems
04/23/2003EP1303861A2 Bulk metal magnetic component
04/23/2003CN1412792A Wirewound coil
04/23/2003CN1106453C Rear earth/Fe/Boron base magnet alloy fast quenching thin strap
04/17/2003WO2002059914A3 Toroidal inductive devices and methods of making the same
04/17/2003US20030071705 Electromagnetic apparatus having adjusting effective core gap
04/17/2003US20030071704 Common-mode choke coil
04/17/2003US20030070282 Ultra-miniature magnetic device
04/10/2003US20030066183 Manufacturing method of layered core
04/09/2003CN1105413C Rotating electrical machine plant
04/03/2003US20030062980 Configuration for producing electrical power from a magnetic field
04/02/2003CN1408119A Method of manufacturing inductor
04/02/2003CN1407564A Magnetic element and its manufacture, power supply module therewith
03/2003
03/27/2003US20030058072 Magnetic member for electromagnetic driving device and manufacturing method thereof
03/26/2003CN1406408A Magnetic core, coil component comprising it, and power source circuit
03/26/2003CN1405954A Iron-alloy band material for voice-coil motor magnetic circuit
03/19/2003EP0862781B1 Fuel injection valve
03/13/2003US20030048167 Magnetic device, method for manufacturing the same, and power supply module equipped with the same
03/12/2003CN1103133C Turbo generator plant
03/06/2003WO2003019587A1 Magnetically hard object and method for adjusting the direction and position of a magnetic vector
03/06/2003US20030043006 Inductor with variable air-gap separation
03/06/2003US20030042455 Method of forming laminated core and electromagnetic type valve driving device
03/05/2003EP1288975A2 Magnetic device, method for manufacturing the same and power supply module equipped with the same
03/05/2003CN2539259Y Improved square magnetic head
03/05/2003CN2539258Y Improved square magnetic ring and drum-shaped iron core combined structure
03/04/2003US6529110 Microcomponent of the microinductor or microtransformer type
03/04/2003US6527823 Used for a magnetic core of a transformer, an inductance, a magnetic core for a motor, and other electronic parts
03/04/2003US6527822 Prepared by quenching of an alloy melt by the method of strip casting, from which a sintered permanent magnet is obtained by powder metallurgy; improved magnetic properties; given metallographic structure
02/2003
02/26/2003EP1286367A1 Electromagnet core, method of manufacturing the electromagnet core, and elevator hoist brake utilizing the electromagnet core
02/26/2003CN1399284A Inductor core
02/25/2003US6525638 Choke coil
02/25/2003US6524459 Electrode for electron-emitting device
02/20/2003WO2002096262A3 Non-alloying core shell nanoparticles
02/20/2003US20030034091 Iron alloy strip for voice coil motor magnetic circuits
02/19/2003CN1398412A Transformer core
02/19/2003CN1101988C Electric high voltage AC machine
02/18/2003US6522231 Power conversion systems utilizing wire core inductive devices
02/13/2003US20030030535 Interlock tabs for laminations
02/13/2003US20030030529 Induction devices with distributed air gaps
02/12/2003EP1283276A1 Iron alloy strip for voice coil motor magnetic circuits
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