| Patents for H01F 27 - Details of transformers or inductances, in general (43,362) |
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| 06/08/1994 | CN1087747A Apparatus for making a transformer core comprising strips of amorphous steel wrapped aound the core window |
| 06/08/1994 | CN1087745A Air core reactor with conductor winding rigidly anchored to structural sleeve |
| 06/07/1994 | US5319343 Integrated magnetic inductor having series and common mode windings |
| 06/07/1994 | US5319342 Flat transformer |
| 06/07/1994 | US5319341 Core support blocking for toroidal transformers |
| 06/01/1994 | EP0598727A1 Protective snap-together enclosure for current transformers |
| 06/01/1994 | DE4239818A1 Wound toroidal core for transformer or suppressor choke - has winding arranged on plastics holder having segmented dome arranged on base provided with connection pins |
| 05/31/1994 | US5317300 Encapsulated high efficiency transformer and power supply |
| 05/26/1994 | WO1994011890A1 Improved edge coating for amorphous ribbon transformer cores |
| 05/26/1994 | CA2148841A1 Improved edge coating for amorphous ribbon transformer cores |
| 05/25/1994 | CN2166507Y Metal expander |
| 05/25/1994 | CN2166506Y Full operating mode type current mutual inductor |
| 05/24/1994 | US5315611 High average power magnetic modulator for metal vapor lasers |
| 05/24/1994 | US5315279 Coil device |
| 05/19/1994 | DE4238587A1 Electromagnetic feedback suppression in electrical transformers and generators - has secondary coil pair formed on same former with capacitive and inductive elements in series with resistor |
| 05/18/1994 | EP0514424B1 Magnetic coil composed of stacked metal sheets, electrical machine with magnetic coils composed of stacked metal sheets, and process for manufacturing magnetic coils |
| 05/18/1994 | EP0349604B1 Transformer |
| 05/18/1994 | CN2165514Y Multiple shunt hollow electric reactor |
| 05/18/1994 | CN2165511Y Micro-welder |
| 05/18/1994 | CN1024607C Distribution welding transformer |
| 05/17/1994 | US5313176 Integrated common mode and differential mode inductor device |
| 05/11/1994 | WO1994010749A1 Integrated emi/rfi filter magnetics |
| 05/11/1994 | WO1994010696A1 Self leaded surface mount coil lead form |
| 05/11/1994 | EP0596554A1 Corrugated panel for immersed electrical transformer tank, its manufacturing process and its use for mounting a tank |
| 05/11/1994 | CN2164590Y Transformer made of oxide coated aluminium belt winded |
| 05/11/1994 | CN2164589Y Box type expander |
| 05/10/1994 | US5311163 Electrically operated magnetic switch designed to display reduced leakage inductance |
| 05/10/1994 | US5309776 Method of diagnosing deterioration of insulating paper in oil-filled electric apparatus |
| 05/06/1994 | CA2102467A1 Air core reactor with conductor winding rigidly anchored to structural sleeve |
| 05/05/1994 | DE4336385A1 Insulated wire having conductor with three insulating layers - with first two layers of polyester opt. mixed with ethylene copolymer with acid or salt side chains and the outer layer of thermoplastic polyamide |
| 05/04/1994 | CN2164101Y Current transformer |
| 05/03/1994 | US5309130 Self leaded surface mount coil lead form |
| 05/03/1994 | CA2019182C Barrier of condenser type for field control in transformer bushing terminals |
| 04/27/1994 | EP0594382A1 Apparatus for making a transformer core comprising strips of amorphous steel wrapped around the core window |
| 04/27/1994 | EP0594031A1 Electric inductance element |
| 04/27/1994 | CN2163436Y On-line monitoring high voltage current mutual inductor |
| 04/27/1994 | CN2163434Y Transformer yoke |
| 04/27/1994 | CN2163433Y Electricity stealing proof and discharging proof small power transformer |
| 04/27/1994 | CN1086055A 3-terminal noise filter, and process for manufacture thereof |
| 04/26/1994 | US5307044 For use with electric wires |
| 04/26/1994 | US5307043 Transformer assembly with improved retainer and insulator |
| 04/26/1994 | US5307041 Coil component |
| 04/26/1994 | US5307040 Transformer with closed conductive loop |
| 04/26/1994 | US5305961 Method of winding an electrical coil as successive oblique layers of coil turns |
| 04/23/1994 | CA2108827A1 Inductive electric component |
| 04/21/1994 | DE4302930C1 Wide band repeater for digital signals - has third conductor connected to inductance coil output via reactance to form resonance circuit |
| 04/21/1994 | DE4302929C1 Wide band repeater coil with two coaxial windings - connected in series with same winding sense to connection point forming induction coil output |
| 04/20/1994 | CN2162702Y Dry transformer |
| 04/14/1994 | WO1994008346A1 High efficiency, high frequency transformer |
| 04/14/1994 | DE4303430A1 Automated mfr. of mechanically wound high-frequency transformer cores - involves use of needles to which wire is soldered or welded for threading through ferrite cores previously bonded to base-plates |
| 04/14/1994 | DE4233898A1 Transformer winding for power transformer, HF=LF converter, pulse transformer or Cuk-converter - has primary and secondary coils of flexible braid of insulated individual wires braided together |
| 04/12/1994 | US5303283 X-ray unit with high-voltage power supply device integrated into the casing |
| 04/12/1994 | US5302931 Coil for a transformer, in particular a high-voltage transformer |
| 04/07/1994 | DE4232090C1 HV transformer for display monitor or TV receiver CRT - has transformer windings carried by plastics former enclosed by sealed housing filled with insulation liquid. |
| 04/06/1994 | EP0590741A1 Transformer or choke |
| 03/31/1994 | WO1994007251A1 Twisted-strand conductor |
| 03/31/1994 | WO1994006537A1 Liquid treatment system |
| 03/31/1994 | DE4326583A1 HF power transformer with laminated windings - with primary winding metal foils wound in helix with secondary windings inserted between helix coils |
| 03/31/1994 | DE4232440A1 Multiphase transformer with laminated core - with T=shaped transition gone between core arms and core yoke having given magnetic isotropy |
| 03/31/1994 | DE4231405A1 Removal of a fluid contg. chlorinated organic cpds. - from a substance by condensn. and subsequent high temp. treatment providing for low-cost environmentally friendly disposal |
| 03/30/1994 | CN1084667A Built-in casing current transformer |
| 03/23/1994 | CN1084314A "8" type three-core column seamless iron core |
| 03/22/1994 | US5296830 Choke coil |
| 03/22/1994 | US5296829 Core-form transformer with liquid coolant flow diversion bands |
| 03/17/1994 | WO1994006133A1 Winding support body for transformers/reactors with superconductors |
| 03/17/1994 | DE4230939A1 Circuitry changing or compensating electrical properties of current converter with magnetic field compensation - contains prim., sec. and measurement coils on core, Hall element in air gap feeding compensation current source controller |
| 03/16/1994 | EP0472527B1 Valve choke, especially for high-voltage dc transmission systems |
| 03/15/1994 | US5294749 Surface mountable molded electronic component |
| 03/10/1994 | DE4220815A1 Ik-cartridge holder for oil-filled transformer - uses plastics housing divided longitudinally into two identical halves enclosing the Ik-cartridge |
| 03/09/1994 | EP0586246A1 Wound core |
| 03/09/1994 | EP0585772A1 Reduction of noise emission of transformers |
| 03/09/1994 | EP0585725A1 Resolver having a magnetic shielding |
| 03/09/1994 | EP0585650A1 Transducer and its application |
| 03/09/1994 | CN2158562Y High power a c parameter transformer |
| 03/09/1994 | CN1083621A Wound Iron core |
| 03/08/1994 | US5293146 Electric coil device for use as a transformer or the like |
| 03/08/1994 | US5293145 Power transformer apparatus |
| 03/03/1994 | WO1994005076A1 Dc to dc/dc to ac power conversion system |
| 03/03/1994 | DE4328089A1 Ignition coil unit for IC engine - has integral power switch and termination device embedded with coil winding in injection moulded plastics block |
| 03/03/1994 | DE4227890A1 HV transformer with screened windings - uses multi-layer screening with conductive layer and outer insulating layers with similar expansion coefficient to transformer insulation mass |
| 03/02/1994 | EP0584660A2 Method and circuit arrangement for reduction of harmonics |
| 03/02/1994 | CN2158131Y Automatic de-airing apparatus for oil immersion transformer |
| 03/02/1994 | CN1083256A Super-energy-saving transformer |
| 03/01/1994 | US5291172 Noise absorber |
| 02/24/1994 | DE4227891A1 HV transformer with insulated windings for operation in different pressure zones - has insulation mass in which transformer windings are embedded and spaced from core by air-gap |
| 02/23/1994 | EP0583644A1 Choke |
| 02/23/1994 | EP0583521A1 Multi-layered insulated wire for high frequency transformer winding |
| 02/23/1994 | CN2157584Y Clip induction ballast core |
| 02/23/1994 | CN2157583Y Transformer for vacuum tester |
| 02/22/1994 | US5289153 Snap together, wrap around cored coil clamp |
| 02/17/1994 | DE4327309A1 Sealed ignition system for IC engine - has ignition coil and transistorised control circuit sealed into housing using alignment insert. |
| 02/16/1994 | CN2156612Y Energy-saving electricity charging machine |
| 02/16/1994 | CN2156579Y Single phase tranformer for power supply |
| 02/16/1994 | CN2156577Y Hot pipe cooling device for oil immersion power transformer |
| 02/16/1994 | CN1082244A Adjustable ballast for more lamps with safe isolation between them |
| 02/15/1994 | US5285760 Ignition coil device for an internal combustion engine |
| 02/09/1994 | EP0582218A1 Choke coil for a converter |
| 02/02/1994 | CN1081532A Method and apparatus for making packets of amorphous steel strip for transformer core manufacture |
| 01/27/1994 | DE4221769C1 Producing inductive constructional component - winding at least one winding around magnet core emerging from floor plate and core plate between which are vertical metal bar groups. |
| 01/26/1994 | EP0580131A2 Methof for making a choke or a transformer with E-shaped core laminations formed of two U-shaped laminations |