| Patents for H01F 38 - Adaptations of transformers or inductances for specific applications or functions (13,550) |
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| 04/30/2002 | US6378514 Igniter for internal combustion engine |
| 04/25/2002 | US20020047714 Abnormality diagnosis method and apparatus for separable transformer |
| 04/25/2002 | US20020047616 Transformer device, high voltage generating apparatus having the same, and lighting system having them |
| 04/25/2002 | US20020046746 Ignition coil for internal combustion engine |
| 04/24/2002 | CN2488155Y Current transformer |
| 04/23/2002 | US6377154 Integrated ignition coil device |
| 04/18/2002 | US20020044469 Power loss of switching power supply circuit for supplying constant voltage |
| 04/18/2002 | DE10106173C1 Arrangement for transferring energy/data between vehicle body and removable part has first core half with pin protruding into second core half, ring with spring pressing it against second half |
| 04/17/2002 | EP1196968A1 Coaxial laser pulser with solid dielectrics |
| 04/17/2002 | CN2487089Y Main loop structure of zero sequence current mutual inductor |
| 04/17/2002 | CN2487088Y Anti-fraudulent use of electrisity current mutual inductor |
| 04/17/2002 | CN2487087Y Front full wave rectifier transformer |
| 04/17/2002 | CN2487082Y Circular iron core winding |
| 04/17/2002 | CN1083142C Flyback transformer device |
| 04/17/2002 | CN1083141C Igniting device for IC engine |
| 04/16/2002 | US6373367 Flyback transformer with core grounded |
| 04/16/2002 | US6373221 Charger coupling |
| 04/16/2002 | US6373203 Diode-split high-voltage transformer |
| 04/11/2002 | DE10049321A1 Electric external power supply e.g. for motor vehicle access-authorization system, has inductive receiving system arranged in vehicle and joined to at least one load |
| 04/10/2002 | EP0928469A4 Apparatus for deactivation of electronic article surveillance tags |
| 04/10/2002 | CN2485766Y Flyback transformer for color kinescope with non-top carried focusing potentiometer |
| 04/10/2002 | CN2485765Y Outdoor fully closed downward current transformer |
| 04/10/2002 | CN1082781C 感应加热装置 Induction heating apparatus |
| 04/09/2002 | US6369680 Transformer |
| 04/04/2002 | US20020039061 Magnetically biased inductor or flyback transformer |
| 04/04/2002 | US20020038648 Ignition mounting arrangement in internal-combustion engine |
| 04/04/2002 | DE10046659A1 Induktiver Übertrager Inductive transmitter |
| 04/03/2002 | EP1193725A1 Method for diagnosing abnormal condition of isolation transformer and device therefor |
| 04/03/2002 | CN2484627Y High-precision current transformer of dry 220KV grade and that below |
| 04/03/2002 | CN1342989A Ferrite core for deflecting coil and its surface polissoir and polishing stone |
| 04/03/2002 | CN1082234C Ignition device for internal combustion engine |
| 04/02/2002 | US6366050 Electromagnetic induction type supply side charging apparatus and electromagnetic induction type charging system |
| 04/02/2002 | US6366022 Electronic ballast for stabilizing current in a gas discharge lamp and method of manufacturing same |
| 03/28/2002 | WO2002025616A1 Inductive transformer |
| 03/28/2002 | WO2001080442A3 Array for contactless transmission of electrical signals or energy |
| 03/27/2002 | EP1190603A2 Electronic ballast and method of manufacturing same |
| 03/27/2002 | EP1190476A1 Method and assembly for the wireless supply of electric energy to a number of actuators, actuator and primary winding therefor and system for a machine with a number of actuators |
| 03/27/2002 | CN2483814Y Current mutual inductor |
| 03/27/2002 | CN2483811Y Device for preventing fraudulent use of electricity with current mutual inductor |
| 03/26/2002 | US6362594 Vehicle battery charger having cooling blower providing improved cooling efficiency |
| 03/21/2002 | WO2002023707A1 Reduction of capacitance effects in potential transformers |
| 03/21/2002 | WO2002023561A1 Electromagnetic device and high-voltage generating device and method of producing electromagnetic device |
| 03/21/2002 | WO2002023301A1 Wide ratio autotransformer-type current ranging |
| 03/21/2002 | WO2001095349A3 Lighting assembly |
| 03/21/2002 | DE10128395A1 Coil bobbin for current transformer, has through-holes in primary coil attachment and fixing piece through which insertion of legs of primary coil are inserted and bent towards concave portion of window in fixing piece |
| 03/20/2002 | EP1189249A2 Explosion-proof voltage transformer |
| 03/20/2002 | CN2482729Y High frequency and high voltage transducer for oscilloscope |
| 03/20/2002 | CN2482694Y Punch DC small current sensor |
| 03/20/2002 | CN1340906A Flyback transformer |
| 03/20/2002 | CN1340831A Kickback transformer |
| 03/14/2002 | WO2001080444A8 Device for transferring electrical energy or signals |
| 03/14/2002 | WO2001080443B1 Arrangement for contactless transmission of electric signals or energy between several mobile units |
| 03/14/2002 | US20020030942 Head drum assembly and tape drive using the same |
| 03/14/2002 | DE10042283A1 Choke coil has coil element(s) associated with core element arms in region of gap between individual arms of opposing core elements; individual coil elements are connected together |
| 03/14/2002 | DE10022620A1 Pass-through current converter, e.g. transformer arrangement has, is located in common plastic housing, each with winding enclosing plastic tube carrying phase conductor |
| 03/13/2002 | EP1187152A2 Rotary contactless connector and non-rotary contactless connector |
| 03/13/2002 | EP1186087A1 System for a machine with a plurality of proximity sensors and a proximity sensor and a primary winding used in such a machine |
| 03/13/2002 | CN2482196Y Current transformer capable of avoiding fraudulent use of electricity |
| 03/13/2002 | CN1339802A Coil framework for current transformer |
| 03/13/2002 | CN1080944C Power source apparatus |
| 03/13/2002 | CN1080921C Non-contact electric power transmission device |
| 03/12/2002 | US6356472 Interconnection system for transmitting power between electrical systems |
| 03/12/2002 | US6356180 High-voltage generating transformer |
| 03/12/2002 | US6355992 High voltage pulse generator |
| 03/07/2002 | WO2002019350A1 A method of manufacturing an inductor |
| 03/07/2002 | US20020028643 Ferrite core for deflecting yoke, surface polishing apparatus and grindstone therefor |
| 03/07/2002 | US20020026929 Ignition coil for use in engine and engine having plastic cylinder head cover |
| 03/06/2002 | CN2480959Y High-voltage winding for flyback transformer |
| 03/06/2002 | CN1338812A Switch power supply circuits with improved power loss factor for providing constant voltage |
| 03/05/2002 | US6353378 Ignition coil for an internal combustion engine |
| 03/05/2002 | US6352069 Ignition coil for internal combustion engines |
| 03/05/2002 | CA2042199C Compact circuit interrupter having multiple ampere ratings |
| 02/28/2002 | WO2002017335A1 Transformer for ignitor |
| 02/28/2002 | WO2002016825A1 Socket and transformer for lamp, and method of manufacturing transformer for lamp |
| 02/28/2002 | DE10039398A1 Method for manufacture of electrical coil e.g. for medical instruments, involves removing electrically conductive layer by machining or laser |
| 02/27/2002 | EP1182769A2 Switching power supply circuit |
| 02/27/2002 | EP1182347A2 Ignition coil and ignition unit using the same |
| 02/27/2002 | EP1181847A1 High-voltage transformer and electrodynamic particle accelerator |
| 02/26/2002 | US6351626 System for noncontacting of electrical energy or electrical signals |
| 02/26/2002 | US6351114 High frequency current detecting apparatus |
| 02/26/2002 | US6351098 Charging receptacle |
| 02/26/2002 | CA2049505C Molded electrical apparatus |
| 02/20/2002 | CN1079602C Inverter control unit |
| 02/19/2002 | US6348797 Combustion state detecting apparatus for internal combustion engine |
| 02/14/2002 | WO2002013213A1 Beacon system with enhanced insulation and sealing |
| 02/14/2002 | US20020017878 Power supply apparatus, an electronic ballast using the power supply, and a self-ballasted fluorescent lamp |
| 02/14/2002 | CA2417009A1 Beacon system with enhanced insulation and sealing |
| 02/12/2002 | US6346001 Coupling structure for mounting core of flyback transformer |
| 02/12/2002 | CA2079323C Cable coupling transformer |
| 02/07/2002 | US20020014940 Ignition coil for an internal combustion engine |
| 02/06/2002 | CN1334638A Transformer for noncontact charging and method for mfg. charged electric implement device |
| 02/05/2002 | US6343595 Ignition coil for internal combustion engine |
| 01/31/2002 | US20020011910 Stick-type igntion coil device having thermal stress releasing member |
| 01/30/2002 | EP1176616A2 Non-contact electric power transmission apparatus |
| 01/30/2002 | EP0894357B1 Electrical installation using electromagnetic induction |
| 01/30/2002 | CN2475113Y Current transformer capable of preventing fraudulent use of electricity |
| 01/30/2002 | CN2475112Y Rotary transformer |
| 01/30/2002 | CN2475111Y Low-loss inductance ballast |
| 01/30/2002 | CN1333915A High-voltage transformer |
| 01/29/2002 | US6342901 Interactive device for displaying information from multiple sources |