H01F 30 - Fixed transformers not covered by group

Patents for H01F 30 - Fixed transformers not covered by group (4,595)
11/1998
11/04/1998	CN2296558Y One terminal connecting zero line output auto neon lamp transformer
10/1998
10/28/1998	CN2296066Y Inductive element
10/21/1998	EP0871966A1 High voltage isolating transformer module
10/21/1998	CN2295268Y High-impedance power transformer
10/21/1998	CN2295267Y Dry hollow series reactor
10/07/1998	CN2293889Y Lower-noise reactor for frequency conversion air conditioner
09/1998
09/29/1998	US5815059 Coaxial isolation mounting of a toroidal transformer
09/22/1998	US5812045 Inverter transformer
09/16/1998	EP0864165A1 High isolation power transformer
09/16/1998	CN2291715Y Voltage arbitrary combination transformer
09/15/1998	CA2005685C Resistance welding apparatus
09/08/1998	US5805045 Power supply conductor from a conductive foil of a foil winding of a power transformer
09/08/1998	US5804892 Transmission device
09/01/1998	US5801610 Phase shifting transformer with low zero phase sequence impedance
08/1998
08/26/1998	CN2289288Y Foil hollow reactor
08/19/1998	EP0858668A1 Vhv transfo-rectifier for surface mounting
08/19/1998	CN1190820A 静态磁铁发电机 Static magnet generator
08/13/1998	DE19804277A1 Dynamo with static permanent magnet(s) for water-power stations, thermal power stations or atomic power stations
08/12/1998	CN1190486A 高压隔离变压器模件 High-voltage isolation transformer modules
08/12/1998	CN1190243A Wound-core-type transformer and apparatus for manufacture thereof
08/11/1998	US5793272 Integrated circuit toroidal inductor
08/11/1998	US5791836 In a machining tool
08/06/1998	WO1998034249A1 Transformer with voltage regulating means
08/05/1998	EP0856856A2 High-voltage generating transformer
08/05/1998	EP0856855A2 Printed coil with magnetic layer
07/1998
07/29/1998	EP0855851A2 Discharge lamp unit
07/22/1998	CN1039272C Push-pull dc-to-ac converter
07/15/1998	CN2286337Y Three-phase input single-phase output voltage transformer
07/14/1998	US5781428 Transformer for 12-pulse series connection of converters
07/14/1998	US5781421 High-frequency, high-efficiency converter with recirculating energy control for high-density power conversion
07/14/1998	US5781071 Transformers and amplifiers
07/14/1998	CA2145958C Phase shifting transformer with low zero phase sequence impedance
07/07/1998	CA2074150C Transcutaneous energy transfer device
07/01/1998	CN2285507Y High-voltage controllable transformer
06/1998
06/24/1998	EP0849655A2 Alternating current power control device
06/24/1998	CN1185600A A. C. electricity control device
06/17/1998	EP0848485A2 High-frequency, high-efficiency converter with recirculating energy control for high-density power conversion
06/17/1998	EP0848396A1 Transformer for switched-mode power supply
06/17/1998	EP0848392A1 Encased magnetic core
06/17/1998	CN1185010A Switched made power supply transformers
06/16/1998	US5768112 Sub-resonant series resonant converter having improved form factor and reduced EMI
06/11/1998	WO1998025279A1 Converter transformer
06/02/1998	US5760671 Transformer with dual flux path
05/1998
05/27/1998	EP0844626A1 Transformer
05/26/1998	US5757258 High voltage isolating transformer module with substrates separated by a fixed distance
05/19/1998	CA2055010C Mini-transformer and method for producing the same
05/14/1998	WO1998020468A1 Modular core, self-powered powerline sensor
05/13/1998	CN1038356C Ignition device for an internal combustion engine
05/06/1998	EP0782755B1 Power supply conductor from the conductive foil of the foil winding of a power transformer
05/06/1998	CN2280985Y Noval frame dry hollow reactor
04/1998
04/23/1998	WO1998016992A1 Adjustable three-phase transformer
04/22/1998	CN1179611A High voltage transformer
04/14/1998	US5740024 Two-stage, high voltage inductor
04/14/1998	US5739736 Mounting arrangement for a high-voltage transformer of a microwave oven
04/09/1998	DE19635749A1 Meßwandler Transducer
04/08/1998	CN2278263Y Leakage-resistant oil-immersed transformer
04/08/1998	CN1178597A Device for voltage control
04/01/1998	CN2277556Y Phase-changing transformer
03/1998
03/25/1998	EP0831500A2 High voltage transformer
03/18/1998	CN1176343A 点火线圈装置 Ignition coil device
03/12/1998	WO1998010445A1 Single coil constitutive of windings for air-core transformers
03/12/1998	WO1998010443A1 Instrument transformer
03/12/1998	CA2264703A1 Single coil constitutive of windings for air-core transformers
03/10/1998	US5726619 Transformer terminal
02/1998
02/26/1998	WO1998008237A1 Vhv transfo-rectifier for surface mounting
02/18/1998	CN1173723A High-tension transformation equipment
02/17/1998	US5719547 Transformer with bifilar winding
02/17/1998	US5719544 Transformer with controlled interwinding coupling and controlled leakage inducances and circuit using such transformer
02/11/1998	EP0823715A2 Three-phase transformer
02/04/1998	CN2273892Y Medium transformer
02/04/1998	CN1172333A Polygonal section coiled iron core transformer and manufacturing method thereof
01/1998
01/21/1998	CN1170984A Passive power factor compensator
01/21/1998	CN1037130C 3-phase symmetrically inputting single phase power supply transformer
01/14/1998	CN1170392A Packaging for patches
01/07/1998	CN1169579A Fully-sealed series reactor
11/1997
11/19/1997	EP0807311A1 Device for voltage control
11/05/1997	EP0804798A1 Multi-phase transformer
11/04/1997	US5684445 Power transformer
10/1997
10/29/1997	EP0803883A1 Converter transformer
10/29/1997	CN2266186Y AC auto-coupling voltage regulator
10/23/1997	WO1997039463A1 Transformer
10/22/1997	CN2265580Y Dry type explosion-proof transformer for mine use
10/07/1997	US5675491 Self-exciting push-pull inverter having reduced dielectric strength requirements
10/07/1997	CA2106108C Transformer assembly with improved retainer and insulator
10/01/1997	EP0719199B1 Tool head with external current supply
10/01/1997	CN2263822Y Autotransformer with output feeding classification convertion
10/01/1997	CN1160916A Energy-enlarging magnetic path and equipment
09/1997
09/17/1997	EP0794908A1 Packaging for patches
09/10/1997	CN1159064A Transformer structure
09/03/1997	CN2261664Y Main transformer for conversion welder
09/03/1997	CN2261663Y Inductive transformer
08/1997
08/27/1997	CN2261072Y Electronating device
08/26/1997	US5660756 High-voltage transformer for a microwave oven power supply
08/12/1997	US5655287 Laminated transformer
08/05/1997	US5654627 Method of automatically changing upper, balanced and lower voltage in electric power saving transformer and the device of the same
07/1997
07/31/1997	WO1997027600A1 Transformer
07/30/1997	CN1155742A Dry transformer of fire-proof epoxy resin
07/24/1997	WO1997026668A1 Superconducting coreless transformer
07/10/1997	WO1997024735A1 High frequency transformer
07/09/1997	EP0783239A1 High voltage transformer assembly apparatus of microwave oven

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