We use the Polyethylene foamed sheet to protect the ferrite cores and bobbins, then use the air column.

Material type: PC40 (TDK) = 3C90 (Ferroxcube) = N67 / N87 (EPCOS)

5set EE19 4+4pins Ferrite Cores

bobbin size: the 3rd picture

AL=1200±25%

 core size(mm): (the 2nd picture)

   A: 19.2±0.4

   B: 8.1±0.3

   C: 5.0±0.2

   D: 4.6±0.2

   E: 14.2min

   F: 5.8±0.3

 
   C1: 1.73 mm^-1
   Le: 39.8 mm
   Ae: 23 mm^2
   Ve: 910 mm^3

5SET =10 ferrite halves + 5 bobbin