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)
11/1984
11/14/1984EP0124809A1 Inductive element
11/13/1984US4482945 Transformer for low distortion rectifier system
11/13/1984US4482880 Iron core for three-phase electromagnetic induction machine
11/13/1984US4482879 Transformer core cooling arrangement
11/13/1984CA1177945A1 Transformer cooling structure
11/13/1984CA1177916A1 Transformer with a controlled flow of cooling liquid
11/13/1984CA1177628A1 Method of making a transformer or like core from amorphous strip metal
11/06/1984US4480377 Method of making an ignition coil core
11/06/1984CA1177546A1 Inductor and process of manufacturing the same
10/1984
10/30/1984CA1177127A1 Miniaturized transformer construction
10/24/1984EP0122850A1 VHF power transformer
10/24/1984EP0122821A1 Fixing device of an object, especially a transformer, to a base
10/24/1984EP0122377A1 Inductance or small transformer
10/23/1984US4479104 Transformer core having charge dissipation facility
10/23/1984CA1176721A2 Microminiature palladium oxide gas detector and method of making same
10/23/1984CA1176704A1 High-voltage transformer
10/17/1984EP0122133A1 Electrical winding
10/17/1984EP0121903A1 Transformer
10/17/1984EP0121839A1 Transformer with ferromagnetic circuits of unequal saturation inductions
10/17/1984EP0121677A1 Inductance, small transformer or similar apparatus
10/17/1984EP0121676A1 Inductance or small transformer, particularly as a series reactor for electric discharge lamps
10/17/1984EP0121535A1 Transformer construction
10/16/1984US4477791 Winding assembly for fluid-cooled electrical inductive apparatus
10/16/1984US4477790 Electrical inductive apparatus with cooling channels
10/16/1984CA1176324A1 Laminated grid and web magnetic cores
10/10/1984EP0121469A1 Pressure relief device
10/10/1984EP0121267A1 Gas-insulated electrical apparatus
10/09/1984USRE31704 Transformer having novel multiple winding and support structure and method of making same
10/02/1984US4475097 Flyback transformer
09/1984
09/25/1984US4473811 Single bobbin transformer having multiple delink windings and method of making same
09/19/1984EP0118825A2 Sheet-wound transformer
09/19/1984EP0118454A1 Ignition coil for internal combustion engines.
09/12/1984EP0118269A1 Electrical transformer
09/12/1984EP0118198A1 Magnets
09/11/1984US4471337 Conductor bundles for the coils of dry inductors
09/11/1984US4471336 Inductive apparatus
09/11/1984US4471335 Transformer or reactor having a winding formed from sheet material
09/11/1984US4471332 Static induction apparatus
09/11/1984CA1174306A1 Shunt inductance coil
09/11/1984CA1174305A1 Insulation of a coil for electric apparatus
09/05/1984EP0117764A1 Coil device
09/05/1984EP0117515A1 Reactor having a plurality of coaxially disposed windings
09/05/1984EP0117460A1 Three-phase choke with five-legged magnetic core
09/05/1984EP0117349A2 Cooling apparatus for an electrical transformer
09/04/1984US4469269 Method of manufacturing the peripheral wall of a tank for an oil-immersed electric apparatus
08/1984
08/30/1984WO1984003253A1 Wire coil assembly for matrix print head and manufacturing method
08/28/1984CA1173581A1 Electrical insulation body
08/22/1984EP0116070A1 Welding system
08/21/1984US4467399 Power supply packaging arrangement
08/21/1984US4467306 High voltage current transformer having coils immersed in dielectric fluid
08/21/1984US4467305 Gas/vapor cooled electromagnetic induction machine
08/21/1984US4467269 Start-up circuit for negative inductance multiplier
08/21/1984US4466681 Soldering lug for mounting electrical conducting wires
08/21/1984CA1173125A1 Laminated core of transformer
08/10/1984EP0105254A4 Improved ferrite core assembly and mounting means.
08/07/1984US4464644 Procelain-clad electrical machine with vibration-on-transportation suppression
08/02/1984WO1984003002A1 Blade body with hollow blades, method and machine for the production thereof
08/01/1984EP0114648A2 Onload tap-changing transformer
07/1984
07/31/1984US4463334 Electric coil on core with angled end surface
07/31/1984US4463307 Negative inductance multiplier circuit including temperature compensation
07/24/1984US4462016 Inductor coils with mechanically coupleable bobbins
07/18/1984EP0113465A1 Electrical interference elimination filter
07/17/1984US4460885 Power transformer
07/17/1984US4460884 Transformer comprising a magnetic screen
07/17/1984US4460883 Stabilization ballast for operating a gas and/or vapor discharge lamp
07/17/1984US4460535 Adhesion to cases, unsaturated polyesters
07/10/1984US4459576 Toroidal transformer with electrostatic shield
07/10/1984US4459575 High power transformer
07/10/1984CA1170732A1 Insulated conductors comprising uninsulated conductor strands with a glued joint and a spacer therebetween
07/04/1984EP0112577A1 Magnetic core and method of producing the same
07/04/1984EP0112482A1 Coiling device for dry-type transformers
07/03/1984US4457792 Heating and curing a prepreg resin
07/03/1984CA1170321A1 Low loss spider support for coil of an inductive apparatus
06/1984
06/26/1984US4456899 Method of utilizing heat due to energy loss in a cool device
06/26/1984CA1169933A1 Convectively cooled bushing connector
06/26/1984CA1169932A1 Transformer cores
06/20/1984EP0111470A2 Thermal protective device for transformers and inductances
06/19/1984US4454635 Holder for releasably securing a ferrite core or the like to an electrical power line
06/19/1984CA1169507A1 High voltage ignition transformer
06/13/1984EP0110582A1 Flexible thermally stable tapes
06/13/1984EP0110269A1 Contact device for the step selectors of step transformers
06/13/1984EP0110069A1 Spraying device to coat objects electrostatically
06/13/1984EP0099408A4 Composite coils for toroidal field coils and method of using same.
06/12/1984US4454554 Coil bobbin
06/12/1984US4454492 Low intra-winding capacitance multiple layer transformer winding
06/07/1984WO1984002224A1 Ignition coal for ignition devices of internal combustion engines
06/05/1984US4453197 Dielectric fluid tank
06/05/1984US4453150 Electric shunt induction winding and automatic lamination cutting machine therefore
06/05/1984US4453144 LC Composite component
05/1984
05/30/1984EP0109587A1 Transformer with an oil-cooled active part and sound reducing resonators
05/29/1984US4451876 Magnetic amplifier
05/29/1984US4451812 Electrostatic shield
05/29/1984US4451693 Combined ballast container and wall plug for portable electrical equipment
05/23/1984EP0109024A1 Three-phase power current line
05/23/1984EP0108921A1 Toroidal magnetic strip wound core with air gap and method of making such a core
05/22/1984US4450424 Kraft paper impregnated with dicyandiamide in a liquid dielectric; distribution transformers
05/15/1984US4449111 Transformer
05/15/1984US4449110 Device for chocking an inverted type current transformer when transported on its side
05/15/1984US4448444 Power supply housings for exterior light apparatus
05/15/1984CA1167494A1 Bayonet-type circuit breaker having a multiple finger integrated contact band
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