Patents
Patents for H01F 38 - Adaptations of transformers or inductances for specific applications or functions (13,550)
07/2002
07/30/2002US6426032 Method of injection-molding coil spool of ignition coil device
07/30/2002US6425468 Non-contact power supply apparatus and pickup portion used therein
07/25/2002US20020097593 Step-up transformer
07/25/2002DE10102342A1 Ignition coil rod e.g. for IC engine, has coil body with transformer supplied with electric power by first and second end sections which are connected to coil body
07/25/2002DE10026175A1 Arrangement for contactless transfer of electrical signals/energy between mobile units has external units coupled to common bus structure by capacitive element(s)
07/24/2002EP1225606A2 Ignition coil for use in engine and engine having plastic cylinder head cover
07/24/2002EP1225605A2 Ignition coil for use in engine and engine having plastic cylinder head cover
07/24/2002EP1225604A2 Ignition coil for use in engine and engine having plastic cylinder head cover
07/24/2002EP1225603A2 Ignition coil for use in engine and engine having plastic cylinder head cover
07/24/2002CN2502386Y 0.5 KV outdoor dry type current transformer
07/24/2002CN2502385Y 35 KV outdoor dry voltage transformer
07/24/2002CN2502384Y 66KV indoor/outdoor dry voltage transformer
07/23/2002US6424696 X-ray catheter using a step-up transformer
07/23/2002US6424247 Inverter transformer
07/23/2002US6424116 Core member, core assembly, charging port and induction-type charging apparatus
07/23/2002US6422225 Ignition coil and method of making
07/18/2002WO2002056648A1 High-voltage transformer
07/18/2002US20020093410 Leakage flux-type power conversion transformer
07/17/2002CN2501228Y Function combined current transformer set
07/17/2002CN2501171Y Air high-voltage current transformer with new structure
07/17/2002CN1358599A Leakage magnet reinforced electric adjustable arc welder
07/11/2002WO2002053226A2 Flexible primary coil for transcutaneous energy transfer (tet)
07/11/2002US20020089404 Flyback transformer
07/10/2002EP1221169A1 Interface module for a local data network
07/09/2002US6417752 Ignition coil
07/04/2002WO2002023301A8 Wide ratio autotransformer-type current ranging
07/04/2002US20020087204 Flexible transcutaneous energy transfer (TET) primary coil
07/04/2002US20020083880 Remote operated vehicles
07/03/2002EP1220245A1 Current transformer
07/03/2002EP1220244A2 Ignition coil for use in engine and engine having plastic cylinder head cover
07/03/2002CN2498721Y Dry capacitor style voltage mutual inductor
07/02/2002US6414582 Low profile surface mount magnetic devices with controlled nonlinearity
07/02/2002US6414579 Current transformer and method for correcting asymmetries therein
07/02/2002US6414267 Method and apparatus for control of a welding power source
06/2002
06/27/2002US20020079999 Coil and method for making same
06/27/2002US20020079863 Non-contact charger
06/26/2002EP1216182A1 Module with an angle sensor technology, contactless energy transmission and contactless information transmission
06/26/2002CN2497415Y Dry-type high-voltage current transformer
06/26/2002CN2497414Y Inverted fully-dry type high-voltage current transformer
06/26/2002CN1355543A Mutual current inductor for detecting pulse current
06/25/2002US6411528 Switching power circuit and insulating converter transformer
06/25/2002CA2134814C Engine ignition and control system
06/20/2002WO2002049049A1 High voltage transformer with over voltage protection, and method for over voltage protection
06/20/2002WO2002007083A3 Wireless communication device attachment and detachment device and method
06/20/2002US20020075612 High voltage transformer with over voltage protection, and method for over voltage protection
06/20/2002US20020074956 Flyback transformer
06/19/2002CN2496122Y Primary winding flush current mutual inductor
06/19/2002CN2496121Y Device for preventing fraudulent use of electricity on primary wire inlet and outlet end of current mutual inductor used for high-voltage electric energy metering apparatus
06/19/2002CN2496120Y Front-located large current mutual-inductance apparatus of switch cabinet
06/19/2002CN2496030Y Voltage-current integrated inverter
06/18/2002US6407470 Electric power transmission device
06/13/2002US20020070624 Slip-ring mounting assembly for high-power rotary current collector system
06/13/2002US20020070623 Cleaning/cooling of high-power rotary current collector system
06/13/2002DE10061674A1 Spark ignition power feed for motor vehicle engine cylinder, has spark electrode extending into combustion chamber and having high frequency transformer connected directly to it
06/12/2002EP1212762A1 Device for the displacement, in particular, the rotative or linear displacement of an active load
06/06/2002US20020067233 Ignition coil for an internal combustion engine
06/06/2002DE10058867A1 Generating and dimensioning high currents involves passing electrically conducting material through internal chamber of unit formed by at least one power unit and dimensioning unit
06/05/2002EP1211776A2 Inductive power distribution system
06/05/2002CN2494552Y Current transformer
05/2002
05/29/2002EP1209705A1 Internal combustion engine ignition coil
05/29/2002EP1209704A1 Choke coil with ferromagnetic material core
05/29/2002EP1208386A1 Sensor for current measurement and electricity meter
05/29/2002DE10058631A1 Drosselspule mit einem Kern aus ferromagnetischem Material Choke coil having a core made of ferromagnetic material
05/23/2002DE10057567A1 Method for producing an ignition coil for an internal combustion engine involves casting of at least parts of the low-voltage zone in a plastic material differing from that used for casting the secondary coil
05/22/2002CN1085388C Variable resistor for high voltage
05/21/2002US6392865 High-speed dual-coil electromagnetic valve and method
05/16/2002US20020058971 Cushioned primary coil for transcutaneous energy transfer
05/16/2002US20020057185 Ignition coil for an internal combustion engine
05/16/2002US20020057182 Current transformer and method for correcting asymmetries therein
05/16/2002US20020057181 Ignition coil for internal-combustion engine
05/16/2002US20020057179 Ignition coil for use in internal combustion engine
05/16/2002US20020057170 Ignition coil
05/16/2002US20020057169 Inductive component comprising a rod-shaped core
05/16/2002US20020057167 Linear filter
05/16/2002US20020057164 Isolation transformer
05/16/2002US20020057162 Current transformer and method for correcting asymmetries therein
05/16/2002US20020057161 Non-contact electric power transmission apparatus
05/16/2002US20020057027 Rotating variable frequency transformer with high voltage cables
05/16/2002DE10143055A1 Ignition unit comprises a housing accommodating a spark plug, an ignition coil electrically joined to the spark plug connector section, and a connector element for supplying voltage to the ignition coil
05/15/2002CN2491954Y Ferromagnetic saturation current mutal-inductor
05/15/2002CN1349216A Head drum component, and magnetic tape driving means using same
05/14/2002US6389318 Magnetic shield for primary coil of transcutaneous energy transfer device
05/14/2002US6388549 Magnet core
05/14/2002US6388548 Non-contact transformer and vehicular signal relay apparatus using it
05/14/2002US6386189 Core with bobbin of polyphenylene ether coating
05/10/2002WO2002037512A1 Method and apparatus for controlling the magnetization of current transformers and other magnetic bodies
05/09/2002US20020055763 Primary transcutaneous energy transfer coil with operational decoupling
05/08/2002CN1084521C Ignitor coil filled with resin material
05/07/2002US6384703 Fully immersed magnetic transformer with multiple condensing surfaces and method
05/07/2002US6384587 Non-contact signal and power transmission apparatus
05/02/2002WO2002035578A1 Electrical lighting system
05/02/2002US20020050904 Ignition coil
05/02/2002EP0954840B1 Device for displaying alpha numeric symbols and/or graphic symbols
05/02/2002DE10051156A1 Method for medium-frequency transformer power transmission via a transformer linked to primary/secondary independently controlled electronic power converters supplies alternating clock pulses to the converters.
05/01/2002CN2489444Y Plane spiral coil flyback transformer
05/01/2002CN2489443Y Helical flyback transformer
05/01/2002CN2489442Y Antirust current transformer
05/01/2002CN2489441Y Rotary transformer
05/01/2002CN2489343Y A.C. sensor
05/01/2002CN1083981C DC and AC current sensor having minor-loop operated current transformer