EP 2003660 A1 20081217 - Transformer and coil winding method thereof
Title (en)
Transformer and coil winding method thereof
Title (de)
Transformator und Spulenwicklungsverfahren dafür
Title (fr)
Transformateur et son procédé d'enroulement de la bobine
Publication
Application
Priority
CN 200710111826 A 20070615
Abstract (en)
A transformer (2) includes a core (20), a primary coil (23) and a secondary coil (21). The secondary coil (21) is formed by a first right-triangle area (A1), ramp areas (A2) and a second right-triangle area (A3). The first right-triangle area is formed by a set of layers providing a slanted surface (a100) and outwardly wound by continuous bending. A first layer (L1) of the set of layers is wound to be formed with an end wound position. A second layer (L2) subsequent to the first layer is wound to be started at a beginning wound position where is bent near the end wound position of the first layer. The rest layers of the set of layers are outwardly formed by repeating the winding sequence of the first and second layers. The ramp areas are wound along the slanted surface, and the second right-triangle area is inwardly wound opposite to the winding sequence of the first right-triangle area.
IPC 8 full level
H01F 27/00 (2006.01); H01F 27/28 (2006.01); H01F 41/06 (2006.01)
CPC (source: EP)
H01F 27/2823 (2013.01); H01F 41/064 (2016.01); H01F 41/086 (2016.01); H01F 27/006 (2013.01); H01F 2027/2842 (2013.01)
Citation (search report)
- [X] JP H0473910 A 19920309 - KIJIMA CO LTD
- [X] JP H0935954 A 19970207 - KIJIMA CO LTD
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
DOCDB simple family (application)
EP 08101768 A 20080219; CN 200710111826 A 20070615