Patents
Sitemap › H01 - Basic electric elements › H01F - Magnets; Inductances; Transformers; Selection of materials for their magnetic properties › H01F 27 - Details of transformers or inductances, in general
Patents for H01F 27 - Details of transformers or inductances, in general (43,362)
04/1998
04/23/1998WO1998016939A1 Magnetic core structure
04/22/1998EP0746860B1 Twisted-conductor bundle for the windings of electric machines and equipment
04/22/1998CN2279687Y Small size transformer
04/22/1998CN1179611A High voltage transformer
04/22/1998CN1179610A Device for dissipating heat from ferrite cores of inductive components
04/22/1998CN1179609A Inductance device and wireless terminal equipment
04/22/1998CN1179607A High voltage electric appliance
04/21/1998US5742489 Transformer housing and connector bushing
04/15/1998EP0836204A1 High voltage electric appliance
04/14/1998US5740024 Two-stage, high voltage inductor
04/14/1998US5739736 Mounting arrangement for a high-voltage transformer of a microwave oven
04/14/1998US5739464 Padmounted transformer enclosure and latch
04/14/1998US5738949 Inductive component having a core formed of high-permeability MnZn ferrites and encapsulated with insulating material
04/09/1998WO1998014964A1 Multiwire parallel conductor for windings of electrical machines and appliances
04/09/1998DE19641388A1 Coil former for transformer or choke coil
04/09/1998DE19641387A1 Coil former for transformer or choke coil
04/09/1998DE19639763A1 Machinery combination for maintaining constant temp, vol, and pressure for static, liquid-cooled electric machines e.g. transformer
04/09/1998DE19637695A1 Branch twist for heavy current pipe coils of power transformers and chokes
04/09/1998DE19635749A1 Meßwandler Transducer
04/08/1998CN2278263Y Leakage-resistant oil-immersed transformer
04/08/1998CN1178381A Lightning arrestering transformer
04/07/1998US5736917 Electromagnetic coil and manufacturing apparatus for the same
04/07/1998US5736916 High frequency pulse transformer for an IGBT gate drive
04/07/1998US5736915 Transformer; dielectric coolant consits of a mixture of two or more compounds selected from oligomeric alpha-olefin, aromatic hydrocarbon, polyols esterified to branched alkyl group with chain length c5 to c20 and triglycerides
04/02/1998WO1998013838A2 Power equipment for use underwater
04/02/1998WO1998013821A1 Active control of acoustic output in gradient coils
04/01/1998CN2277555Y Fault detecting harmonics-preventing self-controlling quenching transformer
03/1998
03/31/1998US5734327 For a resonance detection system
03/31/1998CA2144244C Motor control system and components thereof
03/26/1998WO1998012847A1 Pulse transformer for line interfaces operating according to the echo compensation principle
03/26/1998WO1998012718A1 Current-compensated radio interference suppression reactor with increased leakage inductance
03/26/1998DE19638955A1 Coolant air channel
03/25/1998EP0831500A2 High voltage transformer
03/25/1998EP0831499A2 Device for heat removal from ferrite cores of inductive components
03/25/1998EP0830696A1 Component with a rigid and a flexible electrical termination
03/25/1998CN1177192A High voltage transformer for electric cooking oven
03/25/1998CN1177191A Choke coil
03/25/1998CA2215757A1 Tank for a pad-mounted transformer and method of making same
03/19/1998WO1998011765A2 Improvements relating to inductive assemblies in electronic circuits
03/19/1998WO1998011540A1 Magnetic core with field confinement structure
03/19/1998DE19636457A1 Combination of measures to improve cooling in electric transformers
03/19/1998DE19636456A1 Expansion vessel for electrical transformer protection against foreign gas
03/18/1998EP0830053A2 Coil included printed wiring board
03/18/1998EP0829888A2 Transformer or choke coil and method of making such transformer or choke coil
03/12/1998WO1998010450A1 Improved high voltage coil subassemblies and method for their production
03/12/1998WO1998010448A1 High voltage transformer coil encapsulation process
03/12/1998WO1998010447A1 High voltage/low voltage transformer with thermoplastic air-core insulation
03/12/1998WO1998010446A1 Air-core primary voltage winding
03/12/1998WO1998010445A1 Single coil constitutive of windings for air-core transformers
03/12/1998WO1998010444A1 Air-core electric transformer low voltage stage
03/12/1998WO1998010443A1 Instrument transformer
03/12/1998CA2264904A1 Air-core primary voltage winding
03/12/1998CA2264703A1 Single coil constitutive of windings for air-core transformers
03/12/1998CA2215654A1 Device for dissipating heat from ferrite cores of inductive components
03/11/1998CN1175781A Engine igniting coil device and method of winding ignition coil
03/11/1998CN1037733C Single-phase high-voltage rectification equipment
03/11/1998CN1037724C Apparatus for preventing fraudulent use of electricity and theft of distribution equipment
03/10/1998US5726619 Transformer terminal
03/10/1998US5726617 Electrical transformer with reduced core noise
03/10/1998US5726616 Transformer with plural bobbins
03/10/1998US5726615 Integrated-magnetic apparatus
03/10/1998US5726612 Chip-type electronic component
03/05/1998WO1998009303A1 Charging coil core insert for electric toothbrushes
03/04/1998EP0827164A2 Engine igniting coil device and method of winding an ignition coil
03/04/1998EP0826979A1 Method and apparatus for compensation of field distortion in a magnetic structure
03/04/1998CN1175121A Method fo automatically changing upper, balanced and lower voltage in electric power saving transformer and device of the same
03/04/1998CN1175067A Transformer with magnetic material protection box also used as low-voltage winding
03/04/1998CN1175064A Multi-layer insulating wire and transformer using it
03/03/1998US5724017 Electrical transformer with reduced core noise
03/03/1998US5724016 Power magnetic device employing a compression-mounted lead to a printed circuit board
02/1998
02/26/1998WO1998008237A1 Vhv transfo-rectifier for surface mounting
02/26/1998DE19736593A1 Insulation system for medical electronic endoscope system transformer
02/25/1998EP0825623A2 Multilayer insulated wire and transformer using the same
02/25/1998EP0824569A1 Flame resistant polyester resin composition
02/25/1998EP0681758B1 Dc/dc converter for low output voltages
02/25/1998CN2275302Y Secondary lateral series capacitor compensator for suction flow transformer
02/25/1998CN1174451A Squelch filter for power converter
02/24/1998US5720264 Molded polymeric housing reinforced with glass fibers and filled with dielectric oil has coil insert and is mounted on internal combustion engine
02/19/1998DE19735140A1 Manufacture of laminated core-stacks for transformers and inductances
02/19/1998DE19633197A1 Manufacture of electrical inductive devices e.g. coil and core assemblies for mounting on circuit boards
02/18/1998CN1173760A Electromagnetic machine
02/18/1998CN1173723A High-tension transformation equipment
02/17/1998US5719547 Transformer with bifilar winding
02/17/1998US5719544 Transformer with controlled interwinding coupling and controlled leakage inducances and circuit using such transformer
02/17/1998US5719483 Inductive coupling wand having a molded magnetic core
02/12/1998WO1998006114A1 Winding, particularly for a high-voltage ignition coil circuit
02/12/1998WO1998006113A1 Choke
02/12/1998WO1998006112A1 Planar transformer
02/12/1998WO1997045288A3 An electric drive system for vehicles
02/10/1998US5717552 Magnetic core with field confinement structure
02/10/1998US5717373 Corner insulation for toroidal (annular) devices
02/10/1998US5717326 Current measuring apparatus for measuring current in a wire
02/10/1998US5716713 Insulated metallized substrate; thermoconductivity
02/05/1998WO1998005048A1 Low radiation planar inductor/transformer and method
02/05/1998WO1998005047A1 Core of a transformer with stacked metal sheets, process and device for producing the metal sheets
02/05/1998DE19629930A1 Kern eines Transformators mit geschichteten Blechen sowie eine Vorrichtung und ein Verfahren zur Herstellung der Bleche A transformer core having laminated sheets as well as an apparatus and a method for producing the sheets
02/04/1998EP0822658A1 Inductor assembly and method of making same
02/04/1998CN1172575A Arrangement for attaching electrical component to mounting base
02/04/1998CN1172413A Electronic parts
02/04/1998CN1172333A Polygonal section coiled iron core transformer and manufacturing method thereof
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