| Patents for H01F 30 - Fixed transformers not covered by group (4,595) |
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| 06/08/2006 | US20060119461 Magnetic element and method of manufacturing magnetic element |
| 06/07/2006 | CN2786756Y Self-coupling compensation and harmonious wave shielding flow-exchanging transformer |
| 06/07/2006 | CN1783371A Structure of amorphous alloy iron core dry distribution transformer body |
| 06/07/2006 | CN1258778C Surface installation type inductive element |
| 06/06/2006 | CA2424262C Circuit to mitigate transformer shorted turn |
| 06/01/2006 | WO2006056057A1 Three-phase transformer with dual toroidal flux return path |
| 06/01/2006 | US20060114092 Wound-rotor transformer and power source device using said wound-rotor transformer |
| 05/31/2006 | CN1258197C Great-current HF transformer |
| 05/26/2006 | CA2486767A1 Three phase transformer with dual toroidal flux return path |
| 05/23/2006 | US7049921 Auto-transformer for use with multiple pulse rectifiers |
| 05/17/2006 | CN2781530Y Improved transformer structure |
| 05/17/2006 | CN2781529Y Surface adhesive inverse transformer |
| 05/17/2006 | CN1774775A Booster transformer for driving magnetron and transformer unit having the booster transformer |
| 05/16/2006 | US7046523 Core structure and interleaved DC—DC converter topology |
| 05/10/2006 | CN1770335A Low noise planar transformer |
| 05/10/2006 | CN1770334A Transformer with safety creepage distance |
| 05/10/2006 | CN1770333A Amorphous iron-core transformer |
| 05/09/2006 | US7042323 Signal transformer and method for operating such a signal transformer |
| 05/04/2006 | US20060092673 Method and apparatus for substantially reducing electrical earth displacement current flow generated by wound components |
| 05/03/2006 | CN2777899Y Transformer and multi-lamp tube driving circuit using same |
| 05/03/2006 | CN2777724Y Mine air immersed traction transformer |
| 05/03/2006 | CN1767095A Transformer and transformer production method |
| 05/02/2006 | US7038568 Reactor unit |
| 04/27/2006 | US20060087393 Multiphase induction device |
| 04/26/2006 | CN2775812Y Oil immersed transformer |
| 04/26/2006 | CN2775811Y Dry type transformer |
| 04/26/2006 | CN2775810Y Non-contact electric power transformer |
| 04/26/2006 | CN1763874A Transformer of converter |
| 04/25/2006 | US7034648 Amorphous metal core transformer |
| 04/20/2006 | WO2006040074A1 Toroidal core transformer |
| 04/20/2006 | DE102004049213A1 Wrapping fixture for manufacturing transformer windings, has coil with retaining and rotary bearing at outside of coil carrier to provide rotatable support for carrier, and rolls at peripheral side of carrier are connected with drive device |
| 04/20/2006 | CA2583262A1 Toroidal-core transformer |
| 04/19/2006 | CN2773872Y Transformer |
| 04/19/2006 | CN2773870Y Hopper-sensing insulated transformer with big power UPS and double iron core |
| 04/19/2006 | CN1762107A Modem coupling circuit for power-line carrier |
| 04/13/2006 | WO2006014982A3 Transformer with selectable input to output phase angle relationship |
| 04/13/2006 | WO2004114507A3 Three-phase transformer |
| 04/13/2006 | US20060076329 Transformer module for a welder |
| 04/13/2006 | DE102004048966A1 Vorrichtung zur Potentialtrennung, Ringkerndrossel und Verfahren zur Herstellung der Ringkerndrossel Device for potential separation, toroidal inductor and method of manufacturing the toroidal core choke |
| 04/12/2006 | EP1644946A1 Transformer with protection against direct current magnetization caused by zero sequence current |
| 04/12/2006 | EP1644944A2 Parallel core electromagnetic device |
| 04/12/2006 | CN1758388A Multi-magnetic power energy transformer (magnetic generator) |
| 04/12/2006 | CN1251256C Transformer with heat conductive glue auxiliary radiation |
| 04/06/2006 | WO2006020386A3 Auto transformer for use with multiple pulse rectifiers |
| 04/05/2006 | CN1755846A Transformer,igniting device with transformer and high voltage discharge lamp mounted with transformer |
| 04/04/2006 | US7023675 Power supply for measuring the line impedance of underground cable |
| 04/04/2006 | US7023314 Transformer |
| 04/04/2006 | US7023311 Overlapped superconducting inductive device |
| 03/30/2006 | WO2006032607A1 Ac/dc converter for aeronautics |
| 03/29/2006 | EP1641138A1 Signal filling/extraction device |
| 03/29/2006 | CN1754232A Insulating element, toroidal core, toroidal core choke, and method for producing said toroidal core choke |
| 03/28/2006 | US7019783 Charge pump power supply with noise control |
| 03/22/2006 | EP1636896A2 Three-phase transformer |
| 03/21/2006 | US7015784 Wound-rotor transformer and power source device using said wound-rotor transformer |
| 03/15/2006 | CN1747084A Standard inductance box |
| 03/15/2006 | CN1747083A PCB assembled and integrated transformer with high-density big current power conversion |
| 03/15/2006 | CN1747082A Leakage transformer |
| 03/15/2006 | CN1245591C Transformer assembly for microwave oven and its manufacturing method and microwave oven with said assembly |
| 03/14/2006 | US7012497 Transformer for producing high electrical currents |
| 03/10/2006 | CA2518390A1 Transformer and starting device having a transformer, and high-pressure discharge lamp having a transformer |
| 03/07/2006 | US7009854 Inverter transformer and inverter circuit |
| 03/02/2006 | WO2006021597A1 Multi-voltage power transformer for a high-voltage electric power transmission network (politrafo) |
| 03/02/2006 | CA2574260A1 Multi-voltage power transformer for a high-voltage electric power transmission network (politrafo) |
| 03/01/2006 | CN2762307Y Low no-load loss three-phase planar winding iron-core transformer |
| 03/01/2006 | CN2762306Y Branching transformer |
| 03/01/2006 | CN2762305Y Harmonic discharge transformer |
| 02/23/2006 | WO2006020386A2 Auto transformer for use with multiple pulse rectifiers |
| 02/23/2006 | DE102004039230A1 Induktives Bauelement für hohe Ströme und Verfahren zu dessen Herstellung Inductive component for high currents and process for its preparation |
| 02/23/2006 | CA2576990A1 Auto-transformer for use with multiple pulse rectifiers |
| 02/15/2006 | CN1734687A Insulating packaging structure for transformer and packaging method thereof |
| 02/14/2006 | US6998573 Transformer module for a welder |
| 02/09/2006 | WO2006014982A2 Transformer with selectable input to output phase angle relationship |
| 02/09/2006 | US20060028303 Noise filter |
| 02/08/2006 | CN1731545A Three-phase dry-type transformer |
| 02/07/2006 | US6995993 Rectification system for improving power quality of electrical power systems |
| 02/07/2006 | US6995990 Method and apparatus for substantially reducing electrical earth displacement current flow generated by wound components |
| 02/07/2006 | US6995646 Transformer with voltage regulating means |
| 02/02/2006 | US20060022783 Transformer with selectable input to output phase angle relationship |
| 02/01/2006 | CN2755748Y Open ventilating dry transformer with retardant paper paint-immersed insulation |
| 02/01/2006 | CN1728300A Stick ignition coil apparatus for ignition plug |
| 02/01/2006 | CN1728297A Transformation core and phase reversal transformation using the same |
| 02/01/2006 | CN1240175C Segmented induction electric machine with interdigitated disk-type rotor and stator construction |
| 02/01/2006 | CN1240087C Planar coil and planar transformer |
| 01/25/2006 | EP1547100A4 Electronic transformer/inductor devices and methods for making same |
| 01/25/2006 | CN1725391A Iron-core and transformer using the iron-core |
| 01/25/2006 | CN1725390A Iron-core and phase-reversing transformer using the iron-core |
| 01/25/2006 | CN1238872C Secondary side central-tapped Scott wiring transformer |
| 01/24/2006 | CA2224708C Transformer |
| 01/18/2006 | CN1722319A Oil-immersed power transformer |
| 01/18/2006 | CN1237551C Toroidal inductive devices and methods of making the same |
| 01/12/2006 | US20060006977 Toroidal inductive devices and methods of making the same |
| 01/12/2006 | DE102004030845A1 Schweißstromwandler Welding current transformer |
| 01/11/2006 | EP1614128A1 Booster transformer for driving magnetron and transformer unit having the booster transformer |
| 01/11/2006 | CN2751420Y A high-frequency high withstanding voltage pulse transformer |
| 01/10/2006 | US6985063 Transformer core |
| 01/05/2006 | US20060001516 Symmetrical phase shifting fork transformer |
| 01/04/2006 | EP1224673B1 Earth cooled distribution transformer system and method |
| 01/04/2006 | CN2750438Y Body structure of amorphous alloy iron core dry-type distribution transformer |
| 01/04/2006 | CN2750437Y High-voltage transformer |
| 01/04/2006 | CN2750436Y Ultrahigh capacity on-load tap-changing autotransformer |