| Patents for H01F 27 - Details of transformers or inductances, in general (43,362) |
|---|
| 10/04/1988 | US4775849 Gas insulated current transformer |
| 10/04/1988 | US4775848 High-voltage valve reactor, specifically for high-voltage direct-current transmission systems |
| 10/04/1988 | US4775766 Tapped transformer/switch assembly |
| 10/04/1988 | US4775245 Multi-phase electronic temperature controller |
| 10/04/1988 | US4774756 Method of manufacturing a transformer with coaxial coils |
| 09/28/1988 | EP0284472A1 Current measuring and magnetic core compensating apparatus and method |
| 09/22/1988 | WO1988007257A1 High-frequency component |
| 09/21/1988 | EP0283354A1 Electric transformer, particularly for an ignition coil of an internal combustion engine |
| 09/21/1988 | EP0282953A1 Rectifier transformer |
| 09/21/1988 | EP0282646A1 Ferrite core coil with more than two coil tags for reflow soldering on a printed-circuit board |
| 09/13/1988 | US4771257 Ballast transformer with bobbins coils |
| 09/13/1988 | US4771198 Electromagnet system with protection against overheating |
| 09/13/1988 | US4769900 Magnetic shielding, manganese-zinc or silicone resin |
| 09/07/1988 | CN87213538U Electroceramics coil former for high voltage mutual-inductor |
| 09/06/1988 | US4769625 Electrical coil with terminal pins in adapter plate |
| 09/01/1988 | DE3705450A1 Current transformer for measuring rectangular waveform currents using the compensation principle |
| 08/31/1988 | EP0280624A1 Device to position a magnetic circuit in relation to a coil of a high-tension transformer |
| 08/30/1988 | US4767980 Inductance multiplier circuit |
| 08/30/1988 | US4767343 Electrical connection pin for surface-mountable electrical coils |
| 08/24/1988 | EP0279596A1 Electromagnetic contactor with lightweight wide range current transducer with sintered powdered metal core |
| 08/24/1988 | EP0279538A1 Transformer with wire lead isolation slots |
| 08/24/1988 | EP0279509A1 A heat-distributing winding |
| 08/23/1988 | US4766412 Electronic composite component having resistor element |
| 08/23/1988 | US4766407 Fixture for the window of a magnetic core |
| 08/16/1988 | CA1240777A1 Padmounted transformer enclosure |
| 08/10/1988 | CN87214843U High-reliability domestic voltage regulator for overvoltage |
| 08/09/1988 | US4763095 Transformer with cast insulation jacket |
| 08/09/1988 | US4763093 High-power pulse transformer for short high-voltage and/or high-current pulses |
| 08/04/1988 | DE3701800A1 Instrumentation transformer having a large step-up ratio from the primary current to the secondary current |
| 08/03/1988 | EP0276684A2 Foil-roll electronic part and process of producing same |
| 08/03/1988 | EP0276419A2 Toroidal-core transformer with at least two windings |
| 08/03/1988 | CN87100446A Orthogonal magnetic field transformer |
| 08/02/1988 | US4761630 Transformer core |
| 07/26/1988 | US4760366 Ferrite core |
| 07/26/1988 | US4760325 High frequency coil arrangement |
| 07/26/1988 | US4760294 Linear motor with independently controlled coils |
| 07/21/1988 | DE3700488A1 Power transformer having a ferromagnetic core |
| 07/20/1988 | EP0275093A2 Distributed constant type noise filter |
| 07/19/1988 | US4758808 Impedance element mounted on a pc board |
| 07/12/1988 | US4757295 Transmission line pulsed transformer |
| 07/12/1988 | CA1239200A1 Electrical inductive apparatus |
| 07/12/1988 | CA1239199A1 Transformer winding arrangement for a television apparatus |
| 07/12/1988 | CA1239189A1 Circuit arrangement for large power transformers |
| 07/05/1988 | US4755784 Chip inductor |
| 06/29/1988 | EP0272289A1 Ignition coil for ignition systems of internal combustion engines. |
| 06/29/1988 | CN87205770U Multi-tap adjustable fluorescent-lamp ballast |
| 06/28/1988 | US4754390 Conductively cooled switching regulator |
| 06/28/1988 | US4754250 Holding device for toroidal cores provided with windings |
| 06/16/1988 | WO1988004488A1 Multi-phase electronic temperature controller |
| 06/15/1988 | CN86203510U Air cooled ventilator for transformer |
| 06/08/1988 | EP0270417A1 Inductor |
| 06/08/1988 | EP0269617A1 Transformer. |
| 06/07/1988 | US4750101 Transformer apparatus with rectifier |
| 06/07/1988 | US4750077 Coil device |
| 06/07/1988 | US4749979 Transformer comprising a magnetic screen |
| 06/01/1988 | EP0269347A2 Wound core having cross section periphery with circular and elliptic portions |
| 06/01/1988 | EP0268671A1 Transformer structure |
| 06/01/1988 | CN87207791U 10 kv self-protected self-compensating combined single-phase transformer |
| 06/01/1988 | CN87203634U Industrial frequency high-tension miniature transformer with multiple-slot winding carcass |
| 05/31/1988 | US4748430 Air-cooled high-frequency current transformer |
| 05/31/1988 | US4747206 Method of producing electrical coil units, particularly for ignition apparatus |
| 05/24/1988 | US4746890 Mounting for ignition module |
| 05/24/1988 | US4745966 Heat exchangers and electrical apparatus having heat exchangers |
| 05/24/1988 | US4745677 Method of making an electromagnetic induction apparatus |
| 05/18/1988 | EP0267822A1 High-frequency transformer with a printed winding, in particular for very high voltage supply |
| 05/18/1988 | EP0267498A1 Flux-compensated current transformer |
| 05/18/1988 | CN87200667U Cross magnetic field transformer |
| 05/17/1988 | US4745571 Modular electronic temperature controller |
| 05/17/1988 | US4745536 Reactor for circuit containing semiconductor device |
| 05/17/1988 | US4745388 Transformer with wire lead isolation slots |
| 05/17/1988 | US4744905 Polysiloxane blends, transformers |
| 05/11/1988 | EP0267108A1 Miniaturized transformer |
| 05/11/1988 | DE3636938A1 Heizwandler fuer einen roentgengenerator Filament converter for a roentgengenerator |
| 05/10/1988 | CA1236556A1 Padmounted transformer |
| 05/10/1988 | CA1236526A1 Solenoid for nmr spectroscopy |
| 05/05/1988 | WO1988003355A1 Heat convertor for an x ray generator |
| 05/04/1988 | EP0265612A1 Air-cooled transformer |
| 05/04/1988 | EP0265463A1 Ignition coil for ignition apparatus of internal combustion engines |
| 05/04/1988 | CN85100873B Heavy current transformer whose error can be measured by low current |
| 05/03/1988 | US4742294 Helix current sense system |
| 05/03/1988 | US4741947 High and low molecular weight epoxy solids; cured adhesives |
| 05/03/1988 | US4741096 Method of manufacturing wound transformer core |
| 04/27/1988 | EP0264840A2 Method and device for mounting electrical components on a printed-circuit board |
| 04/27/1988 | EP0264611A1 Transformer or reactor |
| 04/26/1988 | US4739825 Apparatus for cooling the core of a liquid cooled transformer |
| 04/21/1988 | DE3731048A1 Iron core part for electrical units |
| 04/20/1988 | CN87106277A Formed metal core blocking |
| 04/19/1988 | US4739296 Current transformer cooled by a circulating dielectric fluid |
| 04/19/1988 | US4739294 Device comprising a core consisting of parts of amorphous ferromagnetic metal and parts of non-amorphous ferromagnetic material |
| 04/19/1988 | US4738780 Method for replacing PCB-containing coolants in electrical induction apparatus with substantially PCB-free dielectric coolants |
| 04/13/1988 | CN87206285U Three-phase ac arc welder |
| 04/12/1988 | US4737755 Inductance device comprising a ferromagnetic core with an airgap |
| 04/12/1988 | US4736513 Miniature inductor and method of manufacturing same |
| 04/06/1988 | EP0262430A1 Current transformer device for high-voltage open air installations |
| 04/06/1988 | EP0262410A1 Iron core for transformers with at least three core legs |
| 04/06/1988 | EP0262329A1 Flexible circuit magnetic core winding for a core member |
| 04/06/1988 | CN87210289U Transformer oil regenerating device while operating |
| 04/05/1988 | US4736179 Ignition coil for internal combustion engines |
| 04/05/1988 | US4734975 Method of manufacturing an amorphous metal transformer core and coil assembly |
| 04/05/1988 | US4734974 Method of assembling an electrical coil and terminal therefor |