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)
07/2005
07/05/2005	US6914509 Transformer former between two layout layers
06/2005
06/23/2005	US20050134420 Microconverter and laminated magnetic-core inductor
06/15/2005	CN1206671C Compact transformer with a cover
06/07/2005	US6903643 Laminated balun transformer
06/02/2005	US20050116787 Balun
06/01/2005	EP1536558A1 Balun
06/01/2005	CN1623318A High frequency network multiplexed communications over various lines using multiple modulated carrier frequencies
06/01/2005	CN1622452A Balun
05/2005
05/26/2005	WO2005048451A1 Communication transformer
05/25/2005	CN1202935C Output choking coi lfor use on D.C. welding machine and method for using same
05/19/2005	WO2004049675A3 Arrangement of an inductive coupler for power line communications
05/12/2005	US20050099241 Distributed balun with a non-unity impedance ratio
04/2005
04/26/2005	US6885278 Microconverter and laminated magnetic-core inductor
04/19/2005	US6882263 On-chip transformer balun
03/2005
03/23/2005	CN1599978A Integrated balun and transformer structure
03/17/2005	US20050057277 Signal isolators using micro-transformer
03/16/2005	CN1596452A Controlled induction device and method of manufacturing
03/15/2005	US6867665 Filters implemented in integrated circuits
03/01/2005	US6861938 High-frequency power inductance element
02/2005
02/22/2005	US6859128 Output choke for D.C. welder and method of using same
02/17/2005	US20050036638 Transmission coil system and remote control for a hearing aid
02/17/2005	US20050036265 Magnetically coupled device and electronic equipment employing same
02/09/2005	CN1577654A Magnetic coupler and electronic equipment using the same magnetic coupler
02/09/2005	CN1189010C High frequency network communication equipments for transmitting over various lines
02/08/2005	US6853522 Microtransformer for system-on-chip power supply
02/03/2005	WO2005010900A1 Inductors and transformers in integrated circuits
02/02/2005	EP1502268A2 Construction of medium voltage power line data couplers
02/02/2005	EP1502267A1 Transformer
01/2005
01/26/2005	EP1500114A1 Pulse transformer for transmitting and receiving signal
01/26/2005	CN1571080A 可调电感器 Adjustable inductor
01/19/2005	CN1567739A High frequency network communications over various lines
01/18/2005	US6844803 Thirty-degree length impedance transformer
01/06/2005	WO2004100473A9 Signal isolators using micro-transformers
12/2004
12/30/2004	US20040263282 Modem coupling circuit for power-line carrier
12/29/2004	WO2004100194A3 On-die micro-transformer structures with magnetic materials
12/15/2004	CN1180444C Battery for hand held device electricity recharge
12/14/2004	US6831377 Repetitive power pulse generator with fast rising pulse
12/09/2004	DE10323219B3 Sendespulensystem und Fernbedienung für ein Hörhilfsgerät Transmitting coil system and remote control for a hearing aid
12/07/2004	US6828893 Transformer circuit arrangement
12/02/2004	US20040240126 Planar inductive component and a planar transformer
12/02/2004	US20040239465 LAN magnetic interface circuit
11/2004
11/24/2004	EP1480492A2 Transmission coil system and remote control for a hearing aid
11/24/2004	CN1177337C Iron-core material iron-core and transformer for balancing-non-balancing transformer
11/23/2004	US6822549 Method for increased coupling coefficient in a pulse type transformer through coil configuration and varied core area
11/18/2004	WO2004100473A2 Signal isolators using micro-transformers
11/18/2004	WO2004100194A2 On-die micro-transformer structures with magnetic materials
11/11/2004	US20040222492 On-die micro-transformer structures with magnetic materials
11/11/2004	DE10347054A1 Schaltnetzteil Switching power supply
11/03/2004	EP1473743A2 Transformers or inductors ("transductors") and antennas manufactured from conductive loaded resin-based materials
11/02/2004	US6813205 Pre-charge and sense-out circuit for differential type ROM
10/2004
10/28/2004	DE10312284A1 Übertragerkopf und System zur berührungslosen Energieübertragung Pick-and system for contactless energy transfer
10/27/2004	EP1470700A2 High frequency network multiplexed communications over various lines using multiple modulated carrier frequencies
10/27/2004	CN1173594C Electronic circuit unit
10/21/2004	WO2004091086A1 Switched-mode power supply unit
10/21/2004	US20040207504 On-chip transformer balun
10/20/2004	CN1539150A Planar inductive component and planar transformer
10/13/2004	CN1536760A Transformer or inductor and antenna made of conductive charged resin base material
10/07/2004	US20040196715 Pre-charge and sense-out circuit for differential type rom
10/07/2004	US20040196132 Transformer formed between two layout layers
10/07/2004	US20040196131 Inverter transformer and core structure thereof
10/07/2004	US20040195651 Center-tap transformers in integrated circuits
10/05/2004	US6801114 Integrated radio having on-chip transformer balun
09/2004
09/30/2004	WO2004084430A1 Power line carrier-use modem coupling circuit
09/30/2004	WO2004084372A1 Transmitter head and a system for contactless energy transmission
09/28/2004	US6798327 Integrated circuit transformer
09/24/2004	CA2462036A1 Transformers or inductors (transductor) and antennas manufactured from conductive loaded resin-based materials
09/22/2004	CN1530973A Electronic element and producing method thereof
09/21/2004	US6794977 Planar transformers
09/16/2004	WO2004079813A1 Substrate processor and method of manufacturing device
09/15/2004	EP0870353B1 Isolated electrical power supply
09/09/2004	US20040174240 Electrical device and method of producing the same
08/2004
08/26/2004	US20040164923 Transformers or inductors ("transductors") and antennas manufactured from conductive loaded resin-based materials
08/26/2004	US20040164834 Transformer
08/25/2004	CN1163921C Transformer with high coupling efficiency
08/24/2004	US6779261 Integrated balun and transformer structures
08/18/2004	CN1522450A Multiple-interleaved integrated circuit transformer
08/11/2004	CN2632823Y Small voltage boost transformer for transverter for lighting crystal liquid panel
08/05/2004	US20040150500 Controlled induction device and method of manufacturing
07/2004
07/29/2004	US20040145439 Method and apparatus for transformer bandwidth enhancement
07/27/2004	US6768410 Laminated balun transformer
07/22/2004	US20040140877 Microconverter and laminated magnetic-core inductor
07/21/2004	CN1514450A Mn-Zn series feerite, magnetic core for transformer and transformer
07/21/2004	CN1158678C Line interface transformer
07/20/2004	US6765469 Printed circuit board transformer
07/08/2004	US20040130913 Switching voltage regulator for switch mode power supply with planar transformer
07/08/2004	US20040130429 iron oxide (Fe2O3), zinc oxide (ZnO), manganese oxide (MnO), cobalt oxide (CoO); communication transformer, LAN; excellent characteristics of direct current pre-magnetization (inductance characteristics under direct current bias superimposition)
07/08/2004	US20040130427 Mode-switching transformer
07/08/2004	US20040130318 Induction sensor using printed circuit
07/08/2004	US20040129446 Coaxial cable and transmission transformer using same
07/07/2004	CN2624527Y Improved structure of frequency divider
07/07/2004	CN1510780A Laminated balance-non-balance tranformer
07/01/2004	WO2004055739A1 Induction sensor using printed circuit
07/01/2004	US20040125628 High-frequency power inductance element
07/01/2004	US20040124959 Transformer circuit arrangement
06/2004
06/24/2004	WO2004054179A1 Connection structure of twisted pair wires and near magnetic field non-contact communicaiton system ________________
06/24/2004	US20040119573 Laminated balun transformer
06/22/2004	US6754616 Method of emulating an ideal transformer valid from DC to infinite frequency
06/17/2004	US20040113743 Magnetic core for xDSL modem transformer and its composition
06/17/2004	US20040113737 Inductors and transformers in integrated circuits
06/17/2004	US20040111881 Method of manufacturing an on-chip transformer balun

1 2 3 4 5 6 7 8 9 10 11 12 13