Patents
Patents for H01F 38 - Adaptations of transformers or inductances for specific applications or functions (13,550)
03/1993
03/03/1993CN1020018C High-voltage voltage transformer
03/03/1993CA2074892A1 Non-linear inductor with magnetic field reduction
03/02/1993US5191309 Rotary transformer
02/1993
02/25/1993DE4128009A1 Component for high voltage generation in TV receiver - has conductive rubber contacts within plastics package contg. two chambers for portions of bare bleeder resistor
02/25/1993DE4127836A1 High voltage diode-split transformer for TV receiver - ensures coupling of compartmented sec. to prim. winding surrounding auxiliary windings within two-part coaxial former
02/16/1993US5187428 Shunt coil controlled transformer
02/04/1993DE4225565A1 Rotary transformer for video recorder rotary head drum unit - has several concentric circular screen walls for isolation of adjacent pairs of channels containing transformer coils
02/03/1993EP0525459A1 Transmission device
01/1993
01/20/1993EP0523517A1 Leakage transformer, especially for gas discharge lamps
01/20/1993EP0272289B1 Ignition coil for ignition systems of internal combustion engines
01/13/1993EP0522303A2 Combined voltage and current transducer for a metal-encapsulated gas-insulated high-voltage installation
01/13/1993EP0522014A1 Cable coupling transformer.
01/12/1993CA1312654C Mutual inductance current transducer, method of making, and electric energy meter incorporating same
01/07/1993EP0521207A1 Induction discharge type ignition device for an internal combustion engine
01/07/1993EP0521147A1 Current transformer
01/05/1993US5177433 Current-voltage transformer for electronic house-service meter
12/1992
12/30/1992EP0520535A1 Device for transmitting electrical energy and data in automotive vehicles
12/23/1992WO1992022744A1 Coil core with earth contact
12/23/1992CA2071681A1 Apparatus for transmitting electric power and data in motor vehicles
12/15/1992US5172302 Ignition coil unit for an internal combustion engine
12/15/1992US5170768 Modular twin tower distributorless ignition coil
12/15/1992US5170767 Ignition coil for internal combustion engine
12/02/1992EP0515958A1 High voltage starting circuit for igniting and operating AC powered high pressure discharge lamps in vehicles
11/1992
11/26/1992WO1992021131A1 Apparatus for feeding power in non-contact way
11/25/1992EP0514496A1 Engine ignition system including a transformer assembly and positioning means therefor.
11/17/1992CA2023372C Terminated inductive assembly and method of mounting same
11/10/1992US5162726 Molded electrical apparatus
11/05/1992DE4109423A1 Engine ignition system without mechanical distributor
11/03/1992US5160872 Flyback transformer
11/03/1992US5160820 Welding transformer and method of manufacturing same
10/1992
10/28/1992EP0511082A1 Brushless type electrical turning machine for detecting the absolute angular position
10/28/1992EP0510926A2 Rotary transformer
10/28/1992EP0510311A2 Current and voltage transformer for a metal encapsulated, gas insulated high-voltage installation
10/21/1992EP0509680A2 Common mode filtered magnetic connector
10/20/1992US5157319 Contactless battery charging system
10/15/1992DE4111236A1 Sum current transducer for fault current protection switch - has secondary winding contained in insulating pot with central cylinder receiving primary
10/14/1992EP0508521A1 Transformer
10/14/1992EP0508374A1 Ignition coil unit for internal combustion engine
10/13/1992US5155676 Electromagnetic device
10/07/1992EP0507360A2 Current mode bus coupler with planar coils and shields
10/06/1992CA1308451C Electrical measuring transformer
10/01/1992WO1992016743A1 Ignition system without distributor
09/1992
09/30/1992EP0505947A2 Transformer for gas discharge lamps
09/29/1992CA1308172C Magnetron drive apparatus
09/27/1992WO1992017929A1 Inductive power distribution system
09/23/1992EP0504674A2 Instrument transformer for electronic devices rapidly detecting short-circuits
09/23/1992EP0207969B1 Pulsed plasma ignition system
09/22/1992US5150039 Electrical measuring transformer
09/22/1992CA1307823C Electromagnetic contactor with lightweight wide range current transducer with sintered powdered metal core
09/16/1992WO1992017044A1 Protective snap-together enclosure for current transformers
09/16/1992CA2082399A1 Protective snap-together enclosure for current transformers
09/15/1992US5146905 Capacitor discharge ignition system with double output coil
09/08/1992US5144935 Ignition coil unit for an internal combustion engine
09/02/1992EP0501200A2 Compensation principle current sensor
08/1992
08/27/1992WO1992015051A1 Shunt coil controlled transformer
08/27/1992DE4106034A1 Stromwandler Current transformer
08/27/1992DE4105988A1 Ignition coil for IC engine - has connection to secondary coil made via high voltage terminal that latches into secondary coil former
08/27/1992CA2080461A1 Shunt coil controlled transformer
08/25/1992CA1306794C Heat protection casing
08/23/1992WO1992015104A1 Current transformer
08/23/1992CA2104585A1 Current transformer
08/06/1992WO1992013277A1 Current transformer
07/1992
07/23/1992DE4101505A1 Line transformer for TV receiver - has two-half ferrite core between whose front faces lies gap shape determining ferrite member
07/09/1992WO1992011648A1 Process and device for manufacturing coils
07/07/1992US5128646 Ignition coil for an internal combustion engine
07/07/1992US5128645 Ignition coil for an internal combustion engine
07/02/1992DE4117181C1 Ignition coil arrangement for IC engine - has laminated core mounted on earthing bolts gripped by sprung spacers which thermally decouple coil from engine
07/01/1992EP0492018A1 Electric measuring transformer
06/1992
06/30/1992US5126906 Rotary magnetic head device with rotary transformer having high coupling coefficient
06/30/1992US5125386 Coil ignition unit for an internal combustion engine
06/25/1992DE4117182C1 Forming ignition coil mounting for IC engine - fixing laminated core on cylinder head cover so that lower part penetrates latter and protecting from heat radiated by engine by plastics material shell
06/25/1992DE4040604A1 Verfahren und vorrichtung zur herstellung von spulen Method and apparatus for production of coils
06/24/1992CN2108352U Winding frame for feedback transformer
06/24/1992CN1017198B Transformer winding arrangement for a tv apparatus
06/23/1992US5124680 Cased transformer
06/23/1992CA1304130C Current measuring device
06/17/1992EP0490682A1 Small, high-resolution color display apparatus
06/16/1992US5122947 Flyback transformer having coil arrangement capable of reducing leakage of magnetic flux
06/16/1992US5122773 Device for injecting an electromagnetic signal into a conductive wire
06/16/1992US5122729 Power supply device including induction voltage detection coil for charging portable electronic devices
06/16/1992CA1303693C High voltage voltage transformer
06/11/1992WO1992010906A1 High-voltage transformer
06/11/1992WO1992010672A1 Engine ignition system including a transformer assembly and positioning means therefor
06/11/1992DE4039373A1 Hochspannungstransformator High voltage transformer
06/11/1992CA2098100A1 High-voltage transformer
06/11/1992CA2069925A1 Engine ignition system including a transformer assembly and positioning means therefor
06/02/1992CA1302502C Rotatable contactless antenna coupler and antenna
05/1992
05/29/1992WO1992009136A1 A power supply circuit with integrated magnetic components
05/19/1992CA1301268C Device for injecting electromagnetic signals in an electrical conductor
05/07/1992DE4035209A1 Impedance converter for wideband transmission - has 2=part core wound with winding exhibiting required partial winding ratio
05/07/1992DE4035043A1 Magnetic core for DC measuring device - has two free spaces between abutting ends of cooperating core halves each containing magnetic field probe
05/06/1992EP0484074A2 High-frequency, high-leakage-reactance transformer
04/1992
04/30/1992WO1992007370A1 High-voltage terminals for ignition coils
04/30/1992CA2053648A1 High-frequency, high-leakage-reactance transformer
04/28/1992US5109209 Ignition coil device for engine
04/23/1992DE4134256A1 Resin-insulated ignition coil assembly for IC engine - contains connections to coil and ignitor in hollow casing with distribution of insulating and retaining material
04/21/1992US5107411 Interference free, pulse type transformer
04/21/1992US5107390 Shell-form transformer in a battery powered impact device
04/21/1992CA1299256C Ac line filter
04/16/1992DE4032280A1 Hochspannungsanschluesse an zuendspulen Hochspannungsanschluesse of ignition coils