Patents for H01F 27 - Details of transformers or inductances, in general (43,362) |
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11/12/1987 | DE3615529A1 Zuendspule fuer zuendanlagen von brennkraftmaschinen Ignition coil for ignition systems of internal combustion machinery |
11/12/1987 | DE3615307A1 Air-cored coils for automatic SMD fitting |
11/11/1987 | EP0245083A1 A ferrite core and a transformer or inductor including it |
11/11/1987 | EP0244521A1 Engine starter |
11/10/1987 | US4706058 Miniature inductor with molded cover |
11/10/1987 | US4706017 Electrical current sensor |
11/05/1987 | DE3615036A1 Process for rendering transformers reusable, which are contaminated with PCB and other residues damaging the environment |
11/05/1987 | DE3613861A1 Silenced inductive electrical component |
11/05/1987 | DE3613690A1 Self-supporting, screened primary high-voltage device, and a method for its production |
11/04/1987 | EP0243862A2 Electric converter |
11/04/1987 | EP0243738A2 Transformer for a regulated switched-mode power supply |
11/03/1987 | US4704592 Chip inductor electronic component |
11/03/1987 | US4704578 Thermal compensation method for a magnetic circuit having an oscillating circuit with an inductance coil |
10/29/1987 | DE3613862A1 Inductor or transformer having fastening means on a printed circuit board |
10/29/1987 | DE3613797A1 Device for transmitting electrical signals |
10/28/1987 | EP0242734A2 Method and device for cooling a resistive magnetic system for nuclear magnetic resonance tomographs |
10/28/1987 | CN87100299A Apparatus and method for cooling the core of liquid cooled transformer |
10/22/1987 | WO1987006387A1 Output-type electromagnetic transducer |
10/22/1987 | DE3708804A1 Transformer |
10/22/1987 | DE3612209A1 Transformer having a core which consists of two outer limbs and one centre limb |
10/20/1987 | US4701830 Electronic circuit module |
10/20/1987 | US4700440 LC filter manufacturing method |
10/15/1987 | DE3611906A1 Transformer or inductor for intermittent operation by pulsing at a clock frequency |
10/14/1987 | EP0241068A1 Device comprising a core consisting of parts of amorphous ferromagnetic metal and parts of non-amorphous ferromagnetic material |
10/14/1987 | CN87200588U Oil-pressure releaser |
10/14/1987 | CN87101981A Resin casting coil |
10/14/1987 | CN87101947A Improvement in induction apparatus |
10/13/1987 | US4700167 Bobbin construction with strain relief |
10/13/1987 | US4700166 Current transformer having a rectangular iron core |
10/13/1987 | US4699667 Removing residual PCB S from transformers |
10/13/1987 | CA1228135A1 Resonant tag circuits useful in electronic security systems |
10/13/1987 | CA1228131A1 Transformer having concentric coils |
10/07/1987 | CN86207283U Wire coil on concentric ring |
10/06/1987 | US4698605 Monolithic LC feed-through filter having a ferrite body with a re-oxidized capacitive layer |
10/06/1987 | US4698197 Filler, nonmagnetic conductive, single magnetic particles |
09/29/1987 | US4696100 Method of manufacturing a chip coil |
09/24/1987 | WO1987005743A1 A wound transformer core and method of manufacturing same |
09/24/1987 | DE3609617A1 Coil core |
09/23/1987 | EP0238475A1 Fire extinguishing apparatus |
09/22/1987 | CA1227026A1 Process for treating contaminated transformer oil |
09/16/1987 | EP0237344A2 Improvements in induction apparatus |
09/16/1987 | EP0236671A1 Apparatus and method for cooling the core of a liquid cooled transformer |
09/16/1987 | EP0236642A1 High-voltage connection device, particularly for a high-voltage transformer |
09/16/1987 | CN87100199A Coil assembly and support system for transformer, transformer employing same and method for manufacture thereof |
09/15/1987 | US4694140 AC power supply |
09/10/1987 | DE3607025A1 Ferrite chip inductance |
09/08/1987 | US4692566 Ribbon cable |
09/01/1987 | CA1226342A1 Dielectric well logging system with electrostatically shielded coils |
09/01/1987 | CA1226341A1 Thermal compensation process for magnetic circuits |
08/27/1987 | WO1987005148A1 High voltage transformer |
08/25/1987 | US4689731 MOSFET inverter gate drive circuit |
08/25/1987 | US4689593 Transformer with balanced transmission lines |
08/13/1987 | DE3604028A1 Fine air-gap matching for induction energy converter (transducer) |
08/13/1987 | DE3603720A1 Ignition transformer which is operated using high frequency (radio frequency), for oil or gas burners |
08/12/1987 | EP0232197A1 Method of making an inductive chip-component |
08/11/1987 | US4685972 Solubilizing polychlorinated biphenyls in atransformer with a dielectric fluid |
08/06/1987 | DE3603473A1 Method and device for producing magnetic annular cores (toroidal cores) |
08/06/1987 | DE3602759A1 Inductive surface mounted device (SMD) |
08/05/1987 | EP0230811A2 Ignition coil with a closed magnetic circuit |
08/05/1987 | CN86204065U Device for increasing va capacity of regulating transformer |
08/04/1987 | US4684912 Winding form for high voltage transformer |
08/04/1987 | US4684882 Electrical transformer having a solid core surrounding winding in a loop configuration |
08/04/1987 | CA1225125A1 Negative resistance compensated transformer |
07/29/1987 | EP0230185A1 Method of producing magnetic cores for stabilization ballast in an assembly of lamps of varying discharge |
07/23/1987 | DE3601475A1 Transformer |
07/22/1987 | CN86204194U Box-type explosion-proof metal expander |
07/21/1987 | US4682068 Liquid cooled static excitation system for a dynamoelectric machine |
07/21/1987 | US4682000 Welding transformer and rectifier assembly |
07/16/1987 | WO1987004298A1 Magnetic circuit device provided with a current coil |
07/09/1987 | DE3700079A1 Five-limbed core for large three-phase transformers |
07/07/1987 | US4678927 Circuit arrangement for large power transformers |
07/07/1987 | US4677960 High efficiency voltage doubling ignition coil for CD system producing pulsed plasma type ignition |
07/07/1987 | CA1223931A1 Non-magnetic core current sensor |
07/02/1987 | WO1987004001A1 Transformer with amorphous alloy core having chip containment means |
07/02/1987 | WO1987004000A1 Clamping means for the core and coil assembly of an electric transformer |
07/02/1987 | DE3546400A1 Magnetic head (magnet head) |
07/01/1987 | EP0226793A1 Wound ferrite ring core impermeably encapsulated by a liquid resin or by a synthetic thermoplastic resin |
06/30/1987 | US4677538 Sweep transformer with terminating PC board |
06/30/1987 | US4677411 Explosion-proof or flame-proof plug having a transformer disposed in a compression-resistant chamber |
06/30/1987 | US4677255 Insulating shroud and sleeve for the connection between a cable end and a terminal |
06/30/1987 | US4676266 Pressure relief device |
06/25/1987 | DE3539037A1 Plug-in coil for electronic purposes |
06/23/1987 | US4675638 Ferromagnetic multiple shell core for electric coils |
06/23/1987 | US4674344 Engine starter |
06/18/1987 | WO1987003738A1 Amorphous metal transformer core and coil assembly and method of manufacturaing same |
06/18/1987 | WO1987003737A1 High-voltage connection device, particularly for high voltage transformer |
06/18/1987 | WO1987003736A1 Magnetic circuit with low radiated magnetic field, particularly for a high voltage transformer supplying a cathode tube |
06/16/1987 | US4673907 Transformer with amorphous alloy core having chip containment means |
06/16/1987 | EP0225830A1 Method for producing a magnetic circuit with a low magnetic-leakage field, in particular for a high-voltage transformer supplying a cathode ray tube |
06/16/1987 | EP0225392A1 Resin-bonded magnetic composition and process for producing magnetic molding therefrom |
06/11/1987 | DE3543584A1 Transformer with a fusing (protection) device |
06/10/1987 | EP0225316A1 Method and apparatus for winding wedge-shaped segments for an electrical coil of an electrical transformer |
06/10/1987 | EP0225241A1 Coreless-type high-frequency current transformer |
06/09/1987 | US4672358 Surface-mounted power resistors |
06/09/1987 | US4672348 Electrical coil assembly and terminal therefor |
06/03/1987 | EP0224072A1 Transformer with a protective device |
06/03/1987 | EP0223954A1 Inductance for a controlled rectifier, particularly for high voltage direct current transmission installations |
06/03/1987 | EP0136332B1 Wire coil assembly for matrix print head and manufacturing method |
06/02/1987 | US4670625 Electrical insulating bushing with a weather-resistant sheath |
05/26/1987 | US4668931 Composite silicon steel-amorphous steel transformer core |