Patents
Patents for H01F 38 - Adaptations of transformers or inductances for specific applications or functions (13,550)
05/1995
05/02/1995US5412304 Cooled primary of automobile battery charging transformer
05/02/1995US5412253 IC memory card with non-contact power and data connection
05/02/1995US5411006 Engine ignition and control system
04/1995
04/27/1995WO1995011545A1 Inductive power pick-up coils
04/27/1995WO1995011544A1 A flux concentrator for an inductive power transfer system
04/26/1995EP0650240A2 Fixed core inductive charger
04/26/1995EP0650236A1 Electrical high voltage switchgear with toroidal core current transformer
04/26/1995EP0650172A1 Housing for toroidal core and wound toroidal core with such housing
04/25/1995US5408870 Method for detecting the load on an internal combustion engine
04/18/1995US5408209 Cooled secondary coils of electric automobile charging transformer
04/18/1995US5406921 In a combustion cylinder of a spark ignition internal combustion engine
04/13/1995DE4428497A1 Ignition coil device for internal combustion engines
04/11/1995US5406242 Ignition coil
04/11/1995US5405271 Apparatus and method for improving assembly of leadless ballasts into fluorescent luminaires
04/11/1995US5404860 Ignition system for internal combustion engine
04/06/1995DE4333886A1 Ignition transformer (starting transformer) for a gas-discharge lamp
03/1995
03/29/1995EP0645898A2 System for contactless transmission of data or power
03/29/1995EP0645782A1 Multifunctional current feedthrough
03/23/1995WO1995008178A1 Process and design for producing inside coils
03/23/1995WO1995007792A1 Tool head with external current supply
03/21/1995US5400006 Current transformer with plural part core
03/21/1995US5398664 Ignition unit for internal combustion engine
03/16/1995DE4331265A1 Current transformer for cables
03/15/1995EP0643436A1 Rotatable contactless antenna coupler and antenna
03/14/1995US5398014 Core having earth contacting
03/14/1995US5396696 Flyback transformer device and apparatus for preparing same
03/09/1995WO1995006939A1 Multi-channel rotating transformer
03/09/1995DE4330072A1 Ignition coil set for multi-cylinder internal combustion engines
03/08/1995EP0642203A1 Induction charging apparatus
03/08/1995EP0642144A1 Device for the transmission of electric power signals to a rotating system
03/08/1995CN1099912A Electrical energy-transforming equipment
03/02/1995WO1995006319A1 Ignition coil assembly
03/01/1995CN1099530A Power converter configuration, control, and construction
02/1995
02/28/1995US5394302 Ignition coil for internal combustion engines
02/21/1995US5392020 Flexible transformer apparatus particularly adapted for high voltage operation
02/21/1995US5391835 Explosion resistant, oil insulated, current transformer
02/21/1995US5390648 Electrically wiring parts mounted on an engine
02/15/1995EP0638971A1 Ignition coil with reduced transverse size
02/15/1995EP0638912A2 Cooled primary of automobile battery charging transformer
02/15/1995EP0638911A1 A connection support for ignition coils
02/09/1995WO1995004363A1 Device for transmitting electric power signals to a rotary unit
02/08/1995CN1098538A Rotative transformer of equipment for replaying magnetic recording
02/01/1995EP0380582B1 Choke coil
01/1995
01/31/1995US5385476 Magnetic circuits for communicating data
01/25/1995EP0635922A1 Fault current acquiring device having high sensitivity
01/25/1995EP0635856A1 Ignition coil
01/25/1995EP0635823A2 Rotary transformer
01/19/1995DE4424161A1 Ignition coil arrangement
01/19/1995DE4424129A1 Ignition coil arrangement for internal combustion engines
01/19/1995DE4420709A1 Internal combustion engine ignition device
01/19/1995DE4413014A1 Ignition coil for an internal combustion engine
01/19/1995DE4411189A1 Ignition coil for an internal combustion engine
01/19/1995DE4411134A1 Ignition coil for an internal combustion engine
01/19/1995DE4406068A1 Ignition coil
01/17/1995US5382896 For an electronic trip device
01/12/1995DE4400841A1 Ignition coil device for an internal combustion engine
01/11/1995EP0633651A1 Power converter configuration, control and construction
01/11/1995CN1027409C Focusing unit
01/10/1995US5381123 Transformer, especially a measurement transformer, for detecting faults on electrical cables
01/05/1995WO1995000961A1 Ignition coil assembly
01/05/1995DE4320714A1 Diode split high-voltage transformer
01/03/1995US5379021 Inductive coupler for transferring electrical power
01/03/1995US5378966 Flux captivated emission controlled flyback transformer
01/03/1995US5377653 Internal-combustion-engine ignition device
01/03/1995US5377652 Ignition transformer
12/1994
12/08/1994WO1994028560A1 Power coupling
12/08/1994DE4318130A1 Ignition coil for internal combustion engines
12/08/1994DE4318124A1 Ignition coil for internal combustion engines
12/07/1994EP0627750A1 Combined current and voltage transformer for high voltages
12/07/1994EP0627630A2 Differential current sensing method and apparatus
12/01/1994DE4318367A1 Metal-encapsulated high-voltage switching installation
11/1994
11/30/1994EP0442986B1 Ignition coil
11/24/1994WO1994027306A1 Metal-enclosed high-voltage switchgear with a current transformer
11/24/1994WO1994027157A1 Current measurement transducer based on magnetic flux density measurement
11/24/1994CA2162163A1 A metal-enclosed high-voltage switching system with a current transformer
11/23/1994EP0572427B1 Current transformer
11/23/1994CN1026738C Non-linear inductor with magnetic field reduction
11/22/1994US5367432 Instrument current transformer for power cables
11/17/1994EP0624887A1 Ignition device for internal combustion engines and ignition device mounting type distributor
11/16/1994CN1095162A Differential current sensing method and apparatus
11/15/1994US5365394 Electronic relay to protect motors and thyristors against symmetric overload, phase unbalance and short-circuit
11/10/1994WO1994025304A1 Power collector for inductive power transfer
11/10/1994DE4314444A1 Zündspule für Brennkraftmaschinen Ignition coil for internal combustion engines
11/09/1994CN1094792A Secondary winding bobbin for an ignition coil for an internal combustion engine
11/08/1994US5363079 Protective snap-together enclosure for current transformers
11/08/1994US5363035 Phase controlled transformer
11/03/1994DE4314823A1 Gas-insulated, high-voltage (high-tension) switching installation having a current transformer
11/02/1994EP0622814A1 Transducer
11/02/1994CN1094481A 点火线圈 Ignition coils
11/01/1994US5361057 Ignition coil for internal combustion engine
11/01/1994US5359982 Ignitor for an internal combustion engine
10/1994
10/26/1994EP0620947A1 Ignition coil assembly and method of manufacture thereof.
10/25/1994US5359312 Rotary transformer assembly for rotary head drum device
10/20/1994DE4331621C1 Method and device for producing inner windings in an inner groove of an annular body, in particular a rotary transformer
10/18/1994US5357233 Ignition apparatus for internal combustion engine
10/18/1994US5357210 Transconductance amplifier circuit
10/13/1994WO1994023305A1 Electric current measuring device with a magnetic flux sensor, in particular for electric vehicles
10/12/1994EP0619586A1 Electrical energy-transforming equipment
10/12/1994CN1093465A 电流检测器 Current detector
10/08/1994CA2120451A1 Differential current sensing method and apparatus