H01F 30 - Fixed transformers not covered by group

Patents for H01F 30 - Fixed transformers not covered by group (4,595)
05/1996
05/08/1996	EP0710964A2 Transformer for generating two high tensions showing great potential difference
05/08/1996	CN2226798Y Ring Triphase transformer
05/01/1996	EP0709865A1 Method and device for coupling magnetic material with electric windings
04/1996
04/25/1996	DE19537882A1 Choking coil
04/18/1996	WO1996006439A3 Load balancing transformer
04/03/1996	EP0704098A1 Transmission device
03/1996
03/28/1996	WO1996009631A1 Power supply conductor from the conductive foil of the foil winding of a power transformer
03/28/1996	DE4433700A1 Stromzuführungsleiter aus der Leiterfolie der Folienwicklung eines Leistungstransformators Current supply conductors of the conductor film of the film winding of a power transformer
03/19/1996	USRE35180 High frequency thermode driven device employing one-turn-secondary transformers
02/1996
02/29/1996	WO1996006439A2 Load balancing transformer
02/07/1996	CN1116358A Tarnsformer and coil bobbin therefor
01/1996
01/31/1996	CN1030875C 变换器 Converters
01/24/1996	CN1115561A 密封装置 Sealing device
01/10/1996	EP0557378B1 A power supply circuit with integrated magnetic components
01/09/1996	US5483405 Mini-transformer with molded cover and retention structure
12/1995
12/27/1995	CN1030592C Mini-transformer
12/07/1995	DE19519629A1 Electrical power transformer with profiled coil carrier
12/05/1995	US5473300 Cable coupling transformer
11/1995
11/29/1995	CN2214035Y Three-phase dry type multi-power transformer
10/1995
10/31/1995	US5463365 Coil
10/26/1995	WO1995028723A1 Transmission device
10/26/1995	WO1995028722A1 Improvements relating to transformers/inductors
10/25/1995	CN2211104Y Three-phase isomagnetic circuit transformer
10/24/1995	CA2038565C Welding transformer and method of manufacturing same
10/19/1995	DE4412957A1 Übertragungseinrichtung Transmission equipment
10/04/1995	CN1109629A Three phase changing into four phase balance transformer
10/03/1995	US5455759 Symmetrical, phase-shifting, fork transformer
10/03/1995	US5455553 Distribution transformers
09/1995
09/12/1995	US5449991 Motor control system and apparatus for providing desired three-phase voltage therein using a main transformer energized through an autotransformer
08/1995
08/31/1995	DE19505463A1 Power transformer for current supply systems
08/23/1995	CN2205987Y Small content single-phase distributing transformer
08/17/1995	DE4404551A1 Star AC transformer
08/16/1995	CN1029535C High energy dissipation harmonic reactor
08/10/1995	DE4404079A1 Choke coil with spiral-shaped winding
08/09/1995	CN2205078Y Charging and welding machine
08/08/1995	US5440225 Core for coil device such as power transformers, choke coils used in switching power supply
08/02/1995	CN1106170A Equivalent balanced transformer
07/1995
07/18/1995	US5434455 Harmonic cancellation system
07/12/1995	EP0662699A1 A helical induction coil, a device for forming and a method of making same
07/05/1995	EP0661722A1 Transformer
06/1995
06/30/1995	CA2137589A1 Multi-turn z-foldable secondary winding for a low-profile, conductive film transformer
06/06/1995	US5422620 Transformer
05/1995
05/30/1995	US5420558 Thin film transformer
05/16/1995	US5416458 Power distribution transformer for non-linear loads
05/09/1995	US5414401 High-frequency, low-profile inductor
05/03/1995	CN1102272A Multifunctional impedance matching tractive transformer
04/1995
04/27/1995	WO1995011514A1 Power transformer
04/26/1995	EP0650173A1 A three-phase autotransformer with a balancing function
04/26/1995	EP0650172A1 Housing for toroidal core and wound toroidal core with such housing
04/26/1995	CN1102009A Autoformer
03/1995
03/28/1995	US5402097 Ring coil winding assisting device
03/23/1995	WO1995007792A1 Tool head with external current supply
03/21/1995	US5400005 Toroidal transformer with magnetic shunt
03/15/1995	EP0643406A2 Distribution transformers
03/15/1995	EP0643405A2 Distribution transformers
03/07/1995	US5396211 Miniature transformer having compressed laminations
02/1995
02/22/1995	EP0639840A2 Choke coil with spiral-wound winding embedded in insulating material
02/07/1995	US5387894 Distribution transformers
01/1995
01/26/1995	DE4324634A1 Inductor coil having a spiral winding which is embedded in insulating material
01/17/1995	US5382896 For an electronic trip device
01/10/1995	US5381124 Multi-turn z-foldable secondary winding for a low-profile, conductive film transformer
01/03/1995	US5379207 Controlled leakage field multi-interphase transformer employing C-shaped laminated magnetic core
12/1994
12/13/1994	US5373242 Device for detecting and for indicating fault current through a lightning arrestor or an insulator
12/08/1994	DE4318270A1 Coaxial transformer, mode of operation and device for the electromagnetic transformation of power
11/1994
11/30/1994	CN1095855A 3-phase symmetrically-inputting single phase power supply transformer
11/15/1994	US5365144 Electrical power supply unit for the supply of low power loads
11/08/1994	US5363081 Line transformer and manufacturing process thereof
10/1994
10/26/1994	EP0621612A1 Method for coating a toroidal core as edge protector
10/25/1994	US5359313 Step-up transformer
10/06/1994	DE4310199A1 Three-phase transformer
10/05/1994	EP0618596A1 Air core reactor
09/1994
09/28/1994	CN1092914A Push-pull dc-to-ac conoerter
09/20/1994	US5349321 Powercord transformer
08/1994
08/30/1994	US5343080 Harmonic cancellation system
08/30/1994	CA2016661C Welding gun assembly with transformers
08/25/1994	DE4305521A1 Disc winding for a coreless inductor cooled by a coolant
08/16/1994	US5339061 Iron-free transformer
08/02/1994	US5335163 Power supply circuit with integrated magnetic components
07/1994
07/19/1994	US5331536 Low leakage high current transformer
07/19/1994	US5331303 Power transformer for cycloconverters
07/19/1994	US5331271 Compensation scheme for reducing effective transformer leakage inductance
06/1994
06/22/1994	EP0602926A1 Multi-interphase transformer
06/22/1994	EP0602528A1 Transformer
06/17/1994	CA2103427A1 Multi-interphase transformer
06/15/1994	EP0601225A1 Transformer for the transfer of high electrical power at high frequency
06/07/1994	US5319342 Flat transformer
05/1994
05/31/1994	US5317299 Electromagnetic transformer
05/19/1994	DE4238587A1 Electromagnetic feedback suppression in electrical transformers and generators - has secondary coil pair formed on same former with capacitive and inductive elements in series with resistor
05/18/1994	EP0349604B1 Transformer
04/1994
04/26/1994	US5307043 Transformer assembly with improved retainer and insulator
04/26/1994	US5307040 Transformer with closed conductive loop
04/14/1994	DE4233898A1 Transformer winding for power transformer, HF=LF converter, pulse transformer or Cuk-converter - has primary and secondary coils of flexible braid of insulated individual wires braided together
03/1994
03/29/1994	US5298983 Small, high-resolution color display apparatus
03/02/1994	EP0584660A2 Method and circuit arrangement for reduction of harmonics
03/01/1994	US5291173 Z-foldable secondary winding for a low-profile, multi-pole transformer
01/1994
01/26/1994	CN1081280A Receptacle for a converter for an earth-leakage current circuit-breaker and a converter
01/25/1994	US5282120 Converter for providing boost voltage for a flash discharge lamp serving as a photographic light
12/1993
12/16/1993	DE4218968A1 Electrical current supply circuit for LV fluorescent lamp - uses flat capacitor allowing compact incorporation in housing for choke coil or transformer
11/1993
11/30/1993	US5266916 Compact transformer
11/24/1993	EP0570790A2 Box for a transformer for a ground fault current interrupter and transformer

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