EP 0716435 A1 19960612 - PRINTED COIL TRANSFORMER
Title (en)
PRINTED COIL TRANSFORMER
Title (de)
TRANSFORMATOR MIT GEDRUCKTEN SPULEN
Title (fr)
TRANSFORMATEUR A BOBINES IMPRIMEES
Publication
Application
Priority
- JP 9501195 W 19950615
- JP 14770294 A 19940629
Abstract (en)
A printed coil type transformer in a plane type transformer in which a mid-leg core 33 of EE shaped cores or EI shaped cores is disposed through the center of a spiral of a coil laminate 40 in which a plurality of concentric spiral coils are laminated in a thickness direction by using an insulating resin to obtain a magnetic coupling between the plurality of coils, characterized in that: sectional areas of the core at a feet core 34 and a connecting core 35 are approximately the same; the sectional area (Ae) of the mid-leg core is approximately twice of that of the feet core; the sectional area satisfies the following expression in connection with a core volume (Ve): 1.4 </= Ve<1/3>/Ae<1/2> </= 1.7; and the following expression is satisfied between a space (w) between the mid-leg core and the feet core of the core and a height (h) of the mid-leg core: 0.5 </= h/w </= 2. <IMAGE> <IMAGE> <IMAGE>
IPC 1-7
IPC 8 full level
H01F 17/00 (2006.01); H01F 17/04 (2006.01)
CPC (source: EP)
H01F 17/0006 (2013.01); H01F 17/04 (2013.01)
Designated contracting state (EPC)
DE
DOCDB simple family (publication)
WO 9600972 A1 19960111; EP 0716435 A1 19960612; EP 0716435 A4 19961120; TW 436823 B 20010528
DOCDB simple family (application)
JP 9501195 W 19950615; EP 95921971 A 19950615; TW 84106066 A 19950614