H01F 19 - Fixed transformers or mutual inductances of the signal type

Patents for H01F 19 - Fixed transformers or mutual inductances of the signal type (1,296)
02/2003
02/20/2003	WO2003015110A1 Planar inductive component and a planar transformer
02/13/2003	US20030030994 Substrate for electronic part and electronic part
02/13/2003	DE20217628U1 Miniature pulse transformer has circuit boards with pairs of planar spiral windings
01/2003
01/23/2003	US20030016486 Preventing formation of conductive path and resultant ion migration; forming water repellent film by heat treating void area with perfluoroalkyl alkylsilane after drying
01/16/2003	WO2003005382A1 Transformer
01/09/2003	WO2003003390A1 Multiple-interleaved integrated circuit transformer
01/02/2003	US20030001709 Multiple-interleaved integrated circuit transformer
11/2002
11/27/2002	EP1260998A1 Electronic component-use substrate and electronic component
11/20/2002	CN1381127A High frequency network communication equipments over various lines
11/19/2002	US6483203 Single unit integrated transformer assembly
10/2002
10/31/2002	WO2002086920A1 Laminated balun transformer
10/31/2002	US20020158743 Ferrite cores with a new shape
10/31/2002	US20020158616 Power supply with flux-controlled transformer
10/29/2002	US6472969 Wire-wound common-mode choke coil
10/24/2002	US20020153988 Laminated balun transformer
10/24/2002	US20020153984 Balun-transformer
10/23/2002	CN1376007A Electronic circuit unit
10/17/2002	WO2002082480A1 Ceramic electronic device and method of manufacture thereof
10/03/2002	WO2002078022A1 High frequency power inductance element
10/03/2002	US20020140464 Repetitive power pulse generator with fast rising pulse
09/2002
09/25/2002	EP1244210A2 Electronic circuit unit
09/24/2002	US6456180 Line interface transformer
09/19/2002	WO2002073642A1 Planar coil and planar transformer
09/19/2002	US20020130721 Electronic circuit unit suitable for reduction in size and weight
08/2002
08/22/2002	US20020113682 Multilayer balun transformer structure
08/07/2002	CN2504739Y Improved divider structure
08/06/2002	US6429762 Data communication isolation transformer with improved common-mode attenuation
08/01/2002	WO2002060002A1 Integrated broadside coupled transmission line element
08/01/2002	WO2002052590A3 A multilayer balun transformer structure
08/01/2002	CA2403046A1 Integrated broadside coupled transmission line element
07/2002
07/23/2002	US6424247 Inverter transformer
07/18/2002	DE10100282A1 Transformer comprises a first coil and a second coil formed in displaced surfaces of a semiconductor device
07/16/2002	US6420954 Coupled multilayer soft magnetic films for high frequency microtransformer for system-on-chip power supply
07/10/2002	EP1221169A1 Interface module for a local data network
07/10/2002	CN1357897A Great-current HF transformer
07/04/2002	WO2002052590A2 A multilayer balun transformer structure
06/2002
06/20/2002	WO2002049049A1 High voltage transformer with over voltage protection, and method for over voltage protection
06/20/2002	US20020075612 High voltage transformer with over voltage protection, and method for over voltage protection
06/18/2002	US6407647 Integrated broadside coupled transmission line element
06/13/2002	US20020071452 High frequency network multiplexed communications over various
06/13/2002	US20020070836 High-frequency large current handling transformer
06/05/2002	CN1086051C Circuit bias via transformer
05/2002
05/29/2002	EP1208692A1 High frequency network communications over various lines
05/29/2002	DE10056945A1 Ferritkern mit neuer Bauform Ferrite core with new size
05/28/2002	US6396392 High frequency network communications over various lines
05/28/2002	US6396362 Compact multilayer BALUN for RF integrated circuits
05/23/2002	WO2002041343A1 Electronic component-use substrate and electronic component
05/23/2002	WO2002041338A1 Ferrite core with a novel construction
05/23/2002	CA2400321A1 Electronic component-use substrate and electronic component
05/15/2002	CN1349231A Compact transformer with a cover
05/14/2002	US6388551 Method of making a laminated balun transform
05/10/2002	WO2002005076A3 Powering ic chips using ac signals
05/09/2002	US20020053654 Magnetic core for xDSL modem transformer and its composition
05/02/2002	US20020050905 Inductance component in which a permanent magnet for applying a magnetic bias is arranged outside an excitation coil
04/2002
04/30/2002	US6380836 Coil device and switching power supply apparatus using the same
04/25/2002	US20020047757 Filters implemented in integrated circuits
04/24/2002	CN1346137A Battery for hand curred device electricity recharge
04/23/2002	US6377153 Transformer apparatus for use in insulated switching power supply apparatus with reduction of switching noise
04/17/2002	CN1083139C Choke coil
04/16/2002	US6373736 Isolated converter
04/11/2002	US20020041176 Battery apparatus for charging portable device
04/11/2002	DE10147992A1 Batterievorrichtung zum Laden einer tragbaren Einrichtung The battery apparatus for charging a portable device
04/10/2002	CN1343994A Inductance componnet having permanent-magnet for applicating magnetic deflection outside of exciting coil
04/10/2002	CN1343991A Magnetic core for digital user line modulator-demodulator transformer and its compsns.
03/2002
03/20/2002	EP1189248A2 Magnetic core for xdsl modem transformer and composition
03/20/2002	CN2482729Y High frequency and high voltage transducer for oscilloscope
03/13/2002	EP1187150A1 Inductance component in which a permanent magnet for applying a magnetic bias is arranged outside an excitation coil
03/13/2002	CN2482195Y Integrated transformer
02/2002
02/21/2002	CA2355674A1 Improvements to filters implemented in integrated circuits
02/12/2002	CA2079323C Cable coupling transformer
01/2002
01/17/2002	WO2002005076A2 Powering ic chips using ac signals
01/10/2002	US20020003715 Isolated converter
01/02/2002	EP1168387A2 Isolated converter
01/02/2002	EP1166440A1 Transformer with compensation transmission line
12/2001
12/20/2001	US20010052837 Planar miniature inductors and transformers
12/05/2001	EP1159750A1 Monolithic integrated transformer
11/2001
11/29/2001	WO2001091437A1 High frequency network communications over various lines
11/28/2001	EP1157454A1 Power supply with flux-controlled transformer
11/15/2001	US20010040495 Laminated balun transformer
10/2001
10/25/2001	US20010033204 Monolithically intergrated transformer
10/24/2001	EP0772907B1 Circuit bias via transformer
10/24/2001	CN1319238A Planar transformer
10/02/2001	US6297593 Boosting transformer for high-frequency heating device
09/2001
09/27/2001	US20010024379 Inverter transformer
09/26/2001	EP1137017A2 Inverter Transformer
09/13/2001	US20010020886 Coil device and switching power supply apparatus using the same
09/04/2001	US6285273 Laminated balun transformer
08/2001
08/29/2001	CN1070309C Adjustable saturable transformer
08/28/2001	US6281779 Coil device and switching power supply apparatus using the same
08/28/2001	US6281603 Pulse line generators
08/21/2001	US6278266 Symmetrical power generator and method of use
08/16/2001	US20010013819 Output choke for D.C. welder and method of using same
08/09/2001	US20010011938 Output choke for D.C. welder and method of using same
07/2001
07/12/2001	DE10000118A1 Magnetic core, especially for transformer is formed as double holed rod with two parallel holes separated by bar of specified dimensions and aspect ratio
07/04/2001	CN1302443A Safety isolating transformers
06/2001
06/20/2001	CN1300087A Stepdown piezoelectric ceramic autotransformer and its making process
06/14/2001	WO2001043267A1 Power supply with flux-controlled transformer
06/13/2001	EP1105891A1 Planar transformer
06/13/2001	DE19959731A1 Device for converting direct voltage to another direct voltage value divides energy of input voltage into two rectangular pulse trains with equal energy, feeds to two transformers out of phase
05/2001
05/30/2001	CN1297234A Transformer with high coupling efficiency

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