EP 0580131 B1 19951108 - Methof for making a choke or a transformer with E-shaped core laminations formed of two U-shaped laminations.
Title (en)
Methof for making a choke or a transformer with E-shaped core laminations formed of two U-shaped laminations.
Title (de)
Verfahren zur Herstellung einer Drossel oder eines Transformators mit aus zwei U-förmigen Blechen gebildeten E-förmigen Kernblechen.
Title (fr)
Procédé de fabrication d'une réactance ou d'un transformateur avec des tÔles de noyau en forme de E constituées de deux tÔles en forme de U.
Publication
Application
Priority
CH 228492 A 19920720
Abstract (en)
[origin: EP0580131A2] The laminate stack (1) of a transformer or an inductor is formed by U-shaped core laminates (2, 3) which are arranged located adjacent to one another and are fastened to one another in such a manner that an E-shaped core laminate stack is formed, limbs (14, 15), which are in each case shorter, of each U laminate together forming the centre limb of the E laminate. The core laminate stack is in each case completed by an I-shaped magnetic return path laminate (4). The U-shaped laminates are connected to one another, for example by welding. The composition of the E-shaped core laminate stack from two U-shaped core laminate stacks results in considerably greater freedom in stamping, since, in this case, only U-shaped laminates need to be stamped. This allows the stamping to be carried out such that the U-limbs point in the rolling direction of the core laminate material strip. This results in considerably improved magnetic properties of the core laminate stack. <IMAGE>
IPC 1-7
IPC 8 full level
H01F 27/245 (2006.01); H01F 41/02 (2006.01)
CPC (source: EP)
H01F 27/245 (2013.01); H01F 41/0233 (2013.01)
Designated contracting state (EPC)
AT CH DE ES FR GB GR IT LI NL SE
DOCDB simple family (publication)
EP 0580131 A2 19940126; EP 0580131 A3 19940323; EP 0580131 B1 19951108; AT E130119 T1 19951115; DE 59300886 D1 19951214; ES 2079925 T3 19960116
DOCDB simple family (application)
EP 93111617 A 19930720; AT 93111617 T 19930720; DE 59300886 T 19930720; ES 93111617 T 19930720