Patents
Sitemap › H01 - Basic electric elements › H01F - Magnets; Inductances; Transformers; Selection of materials for their magnetic properties › H01F 30 - Fixed transformers not covered by group
Patents for H01F 30 - Fixed transformers not covered by group (4,595)
08/2005
08/09/2005US6927663 Flyback transformer wire attach method to printed circuit board
08/09/2005US6927658 Drum type core with discrete structure
08/04/2005US20050168312 Transformer
08/04/2005DE202005008726U1 Dispersive transformer e.g. for DC-DC converter power pack, has one part of winding enclosing two limbs, of which one has an air-gap
08/04/2005DE102004011867B3 Winding body for at least two transformers has winding sub-bodies with common holding rail joining sub-bodies and for holding common I core; winding sub-bodies are configured so the at least two transformers are at distance apart
08/03/2005CN2715310Y Transformer and multi-tube driving system using the same
08/03/2005CN2715309Y Transparent mode frequency changing rectification dry type transformer
08/03/2005CN2715308Y Transparent mode dry type transformer
08/03/2005CN1650374A Construction of medium voltage power line data couplers
08/03/2005CN1649044A 220 KV single phase railway traction transformer structure
08/03/2005CN1213447C 变压器磁芯 Transformer cores
08/02/2005US6924777 Enhanced antenna using flexible circuitry
07/2005
07/28/2005US20050162237 Communication transformer
07/27/2005CN2713602Y Sheet type ring transformer
07/21/2005US20050157193 Charge pump power supply with noise control
07/21/2005US20050156702 Motionless electromagnetic turbine
07/21/2005DE4337053B4 Spule Coil
07/20/2005EP1554801A1 Power modulator
07/20/2005EP1282904B1 Multi-layer, multi-functioning printed circuit board
07/20/2005CN2711869Y All closed buried type transformer
07/20/2005CN1641811A N-layer magnetic core I-type thin-film transformer array and its preparing method
07/20/2005CN1641810A C-class non-sealed coil dry transformer
07/20/2005CN1641809A Contactless regulating self-coupled transformer
07/20/2005CN1641808A Multiple-unit output current-converting transformer
07/20/2005CN1211816C High-voltage transformer with strong coupling
07/20/2005CN1211815C Stepdown piezoelectric ceramic autotransformer and its making process
07/13/2005CN2710121Y Transformer structure
07/13/2005CN2710120Y High-pressure transformer
07/13/2005CN1639813A Transformer
07/13/2005CN1637967A Transformer device and magnetic core structural body for transformer and producing method thereof
07/13/2005CN1210733C Interference wave shielding converter
07/07/2005US20050146395 Three way power splitter
07/07/2005US20050145611 Power source for plasma device
07/07/2005DE10001633B4 Spulenwickelkörper für Wechselstromnetzgerät Coil bobbin for AC power supply
07/06/2005CN1635588A Three-phase transmission and distribution power transformer
07/06/2005CN1635587A Single phase AC step transformer
07/06/2005CN1209774C Three-phase common-box current transformer
06/2005
06/30/2005US20050141205 Insulating package structure
06/30/2005US20050138797 Method for manufacturing a multi-site spare 3-phase transformer
06/29/2005EP1547100A2 Electronic transformer/inductor devices and methods for making same
06/23/2005WO2005057769A1 Transformer based voltage supply
06/23/2005US20050134192 Ignition system for a high-frequency high-intensity discharge lamp system
06/22/2005CN2705867Y Transformer structure
06/21/2005US6909352 Endless core for a multiphase transformer and a transformer incorporating same
06/15/2005EP1540674A1 Transformer and transformer unit having the same
06/15/2005CN2704932Y Battery charger of movable robot
06/15/2005CN1627457A Magnetic component and its making method
06/15/2005CN1206674C Transformer for microwave oven
06/09/2005WO2005053141A1 Switching power supply apparatus
06/09/2005WO2005053140A1 Switching power supply apparatus
06/07/2005US6903642 Transformers
06/02/2005WO2005050341A1 Voltage regulator including controllable transformer
06/01/2005EP1536435A2 Printed circuit transformer
05/2005
05/26/2005WO2005048451A1 Communication transformer
05/26/2005US20050110606 Printed circuit transformer
05/25/2005CN1619725A Semiembedded type non crystalline alloy composition transformer structure
05/24/2005US6897759 High voltage transformer
05/19/2005US20050104698 Electromagnetic device, high-voltage generating device, and method for making the electromagnetic device
05/18/2005CN1202538C Three phase to two phase balance transformer
05/17/2005US6894598 Inductor having small energy loss
05/17/2005US6894596 Inverter transformer to light multiple lamps
05/11/2005EP1101258B1 High pulse rate pulse power system
05/11/2005EP1018127A4 Power distribution network incorporating a voltage support transformer and process of use
05/11/2005CN2699446Y Novel power cabinet type transformer
05/11/2005CN1614837A Assembled trans formers
05/11/2005CN1614723A Improved structure of high-voltage transformer
05/10/2005US6891459 Inductive devices having a wire core with wires of different shapes and methods of making the same
05/05/2005US20050093672 Electronic transformer/inductor devices and methods for making same
05/05/2005US20050093671 Inductive devices having a wire core with wires of different shapes and methods of making the same
05/04/2005CN2697802Y Toroidal transformer for inverter
05/03/2005US6888436 Isolation transformers
05/03/2005US6888268 Energy storage device
04/2005
04/28/2005WO2005039014A1 Rectification system for improving power quality of electrical power systems
04/27/2005CN2696093Y Transformer and fluorescent tube driving device using the transformer
04/26/2005US6885270 Wire core inductive devices having a biassing magnet and methods of making the same
04/26/2005US6885268 Method and device for cooling high voltage transformer for microwave oven
04/21/2005WO2005036720A2 Charge pump power supply with noise control
04/21/2005WO2004112193A3 Electrical cable and connector assembly with voltage step down system
04/20/2005EP1524677A1 A charger
04/20/2005EP1523748A1 Inductive component and use of said component
04/20/2005CN2694451Y Horizontal-output transformer
04/20/2005CN1607718A Switching power supply circuit
04/20/2005CN1607615A Transformer modularized combination structure
04/20/2005CN1607614A Transformer for multiple tube drive circuit and multiple tube drive circuit
04/19/2005US6882071 Multiple-function pumping device for fountains, ornamental fountains and the like
04/19/2005US6880228 Method for manufacturing a three-phase transformer
04/14/2005WO2005034318A2 Distributed floating series active impedances for power transmission systems
04/14/2005WO2004114499A3 Parallel core electromagnetic device
04/14/2005US20050077991 Landscape lighting transformer having increased loading features
04/14/2005US20050077887 Rectification system for improving power quality of electrical power systems
04/13/2005CN1606106A 变压器 Transformer
04/13/2005CN1197230C Switching power supply circuit
04/12/2005US6879235 Transformer
04/07/2005US20050073200 Distributed floating series active impedances for power transmission systems
04/06/2005CN2691024Y Transformer structure
04/05/2005US6874224 Method for manufacturing a multi-site spare three-phase transformer
03/2005
03/31/2005US20050068792 Switching power supply circuit
03/31/2005US20050068147 Modular inductor for use in power electronic circuits
03/30/2005CN1601667A Method of lowering impact induction potential of large volume autotransformer
03/29/2005US6873237 Core structure
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