EP 0671749 A1 19950913 - Planar winding transformer.
Title (en)
Planar winding transformer.
Title (de)
Flachspuletransformator.
Title (fr)
Transformateur à bobine plane.
Publication
Application
Priority
ES 9400514 A 19940311
Abstract (en)
Of special application in switched power supply units that have high operating frequencies. The transformer comprises a core and windings formed by planar wire turns. These wire turns are in the form of open rings of a conductive material coated with an insulating material, joined electrically inside the transformer window by a soldering process, having previously eliminated the insulating material they have in two segments of each ring. The end wire turns (E) differ from those in the centre (C) because they have at least one extension (P) that is used as a terminal of the transformer. To make assembly easier, they can have a notch (H) that is shifted progressively by an angle with respect to an origin so that the openings of the wire turns of a winding form a helix. <IMAGE>
IPC 1-7
IPC 8 full level
H01F 27/28 (2006.01)
CPC (source: EP)
H01F 27/2847 (2013.01)
Citation (search report)
- [XA] FR 2476898 A1 19810828 - MINI INFORMATIQ SYSTEM STE EUR [FR]
- [A] US 3271716 A 19660906 - FURTH HAROLD P
- [A] PATENT ABSTRACTS OF JAPAN vol. 7, no. 99 (E - 172)<1244> 27 April 1983 (1983-04-27)
Designated contracting state (EPC)
AT BE CH DE FR GB IE IT LI SE
DOCDB simple family (publication)
EP 0671749 A1 19950913; EP 0671749 B1 19980513; AT E166179 T1 19980515; DE 69502427 D1 19980618; DE 69502427 T2 19990114; ES 2085235 A2 19960516; ES 2085235 B1 19980516; ES 2085235 R 19971001
DOCDB simple family (application)
EP 95103110 A 19950304; AT 95103110 T 19950304; DE 69502427 T 19950304; ES 9400514 A 19940311