H01F 27 - Details of transformers or inductances, in general

Patents for H01F 27 - Details of transformers or inductances, in general (43,362)
01/1987
01/07/1987	EP0118454B1 Ignition coil for internal combustion engines
01/06/1987	US4635019 Coil apparatus with divided windings
01/06/1987	US4635018 Core containing amorphous ferromagnetic strip material
12/1986
12/30/1986	EP0206584A1 Surface mountable electronic device
12/30/1986	EP0206406A1 Two-part transformer casing having liquid-tight seal
12/30/1986	EP0205538A1 Process for reducing the transmission error of current transformers, and precision current transformers
12/23/1986	US4631511 Toroid transformers and secondary windings
12/23/1986	US4631509 Electrical induction apparatus with support inside casing
12/18/1986	WO1986007489A1 Resin-bonded magnetic composition and process for producing magnetic molding therefrom
12/16/1986	US4630018 Molded case circuit breaker current transformer with spiral bus
12/16/1986	US4629974 Active current transformer
12/16/1986	US4629918 Spacer to prevent coil shift
12/16/1986	US4629822 Electrical bushing
12/09/1986	US4628251 Precision measurement voltage transducer
12/09/1986	US4628148 Encapsulated electronic circuit
12/09/1986	US4627407 Ignition coil for multi-cylinder internal combustion engine
12/03/1986	EP0203083A1 Folded rf marker for electronic article surveillance systems.
12/02/1986	US4626816 Multilayer series-connected coil assembly on a wafer and method of manufacture
11/1986
11/26/1986	EP0202539A1 Safety transformer
11/26/1986	CN86103505A Method and an arrangement for controlling the magnetizing current passing through a transformer
11/20/1986	WO1986006892A1 Circuit for producing a high direct voltage from a medium frequency alternating voltage
11/20/1986	WO1986006868A1 Cord-carrying coil and method of manufacturing same
11/18/1986	US4623865 Current transformer arrangement for ground fault circuit interrupters
11/12/1986	CN85103762A High-tension transformer cooling device for microwave oven
11/11/1986	US4622627 Switching electrical power supply utilizing miniature inductors integrally in a PCB
11/11/1986	US4622532 Hourglass magnet
11/11/1986	US4622435 Adjustable light base and transformer housing
11/06/1986	WO1986006543A1 Connector arrangement for electrical circuits in underwater installations, and transformer particularly for use in such arrangements
11/05/1986	EP0144347B1 Active current transformer
11/04/1986	US4621298 Dual voltage distribution transformer with internal varistor surge protection
11/04/1986	US4621248 Amorphous cut core
11/04/1986	US4621231 Toroidal sensor coil and method
11/04/1986	CA1213671A1 Electrical particle generator
10/1986
10/29/1986	EP0199456A2 Electric transformer, possibly in combination with a rectifier
10/29/1986	EP0199280A2 Contacting metal covered plastic parts of a coil form
10/28/1986	US4620165 Electrical suppressor filter
10/28/1986	US4620144 Self-controlled variable inductor with air gaps
10/23/1986	WO1986006208A1 Ac groundless electromagnetic converter
10/21/1986	CA1212991A1 Transformer arrangement for generating rectified high voltage
10/14/1986	US4617543 Coil bobbin
10/14/1986	CA1212732A1 Energy saving wound core transformer
10/08/1986	EP0196992A1 Current transformer having a rectangular magnetic core
10/08/1986	EP0196857A2 Transformer winding arrangement especially for video display
10/08/1986	EP0196512A1 Method of producing a high-frequency coil with radial leads fixed on a belt for the automatic assembly of printed circuits and suited for automatic alignment
10/08/1986	EP0196511A1 Ferromagnetic shield for magnetic resonance magnets
10/08/1986	EP0196406A1 Method for manufacturing U-shaped core sheets
10/08/1986	EP0196341A1 Electronically controlled coil assembly
10/08/1986	CN86100489A Transient voltage protection for toroidal transformer
10/07/1986	US4616205 Preformed multiple turn transformer winding
10/07/1986	CA1212435A1 Electrical transformer having corona shielding means
09/1986
09/30/1986	CA1212158A1 Insulated conductor having adhesive overcoat
09/24/1986	CN86102094A Method of making core laminations, and punch die for carrying out the method
09/24/1986	CN86101882A Ignition coil assembly for internal combustion engines
09/24/1986	CN86101721A Transformer winding arrangement for a television apparatus
09/23/1986	US4613843 Planar coil magnetic transducer
09/23/1986	US4613842 Iron core for electrical machinery and apparatus as well as method for producing the iron core
09/23/1986	CA1211828A1 Electric apparatus
09/16/1986	CA1211519A1 Inductive apparatus
09/16/1986	CA1211518A1 Current-sheet inductor network and pulse-forming systems
09/12/1986	WO1986005314A1 Laminate of thinamorphous alloy strip, core made of thin amorphous alloy strip, and process for their production
09/10/1986	EP0194163A1 Self-controlled variable inductance with gaps, and electrical system having such an inductance
09/10/1986	EP0193784A2 Connecting device for a high-tension machine
09/10/1986	EP0106856B1 Casing, particularly for transformers, and method for manufacturing the casing
09/10/1986	EP0096058B1 Electric transformer and method for making it
09/09/1986	US4611191 Non-magnetic core current sensor
09/09/1986	US4611093 For use with a transformer
09/09/1986	US4611092 For an electrical element
09/09/1986	CA1244899A Wire wound magnetic circuit distribution transformer
09/09/1986	CA1211170A1 Choke with windings about core legs made of iron-core discs
09/09/1986	CA1211169A1 Distribution transformer with woundmagnetic circuit
09/02/1986	US4609901 Transformer clamp-down bracket
09/02/1986	US4609900 High-voltage transformer with liquid cooling
09/02/1986	CA1210829A1 Dot matrix print head solenoid assembly
08/1986
08/27/1986	EP0192368A1 Surface mount package for toroids
08/27/1986	EP0192326A1 Insulation of electrical terminations
08/27/1986	EP0192165A1 Power transformer for converter stations in high voltage direct current installations
08/27/1986	CN85100872A High accuracy lv voltage transformer compensated by booster
08/26/1986	US4608547 Core and core laminations for electromagnetic devices
08/26/1986	US4608297 Multilayer composite soft magnetic material comprising amorphous and insulating layers and a method for manufacturing the core of a magnetic head and a reactor
08/26/1986	CA1210491A1 Electromagnetic induction apparatus and method of making same
08/26/1986	CA1210464A1 Iron powder encapsulated liquid cooled reactors
08/20/1986	EP0191398A1 Oil-filled tap changer assembly with oil expansion vessel
08/20/1986	CN85202197U Super multi-box type isolated power transformation-electric filter
08/20/1986	CN85109359A Improved method for replacing pcb-containing coolants in electrical induction apparatuswith substantially pcb-free dielectric coolants
08/19/1986	US4607245 Gas insulated electromagnetic induction appliance
08/19/1986	US4607211 Method of correcting inaccurate instrumental potential transformer ratio
08/19/1986	US4607142 Transformer flux compensation circuit
08/19/1986	CA1210102A1 Transformer or reactor
08/19/1986	CA1210101A1 High voltage isolation transformer
08/13/1986	EP0190930A2 Transient voltage protection for toroidal transformer
08/13/1986	EP0190802A1 Core containing amorphous ferromagnetic strip material
08/13/1986	EP0131594B1 Blade body with hollow blades, method and machine for the production thereof
08/06/1986	CN85201527U Cooling device for high voltage transformer of microwave oven
08/05/1986	US4604673 Distribution transformer with surge protection device
08/05/1986	CA1209238A1 Power supply packaging arrangement
07/1986
07/31/1986	WO1986004449A1 Core for stationary inductor
07/30/1986	EP0188698A2 Method for replacing PCB-containing coolant in electrical induction apparatus with substantially PCB-free dielectric coolants
07/29/1986	US4603314 Inductor
07/29/1986	CA1208723A1 Toroidal core electromagnetic device
07/29/1986	CA1208696A1 Transformer with rectifier

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