This is schematic of my trans and it have 2x4 turn primary with center tap and secondary 2x15 turn with center tap.
**broken link removed**
But i have no idle to winding above tnans in the real world on the etd39 bobbin !
Anybody can tell me (with picture ) step by step how to do this pleaseeeeee![Eek! :eek: :eek:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
**broken link removed**
But i have no idle to winding above tnans in the real world on the etd39 bobbin !
Anybody can tell me (with picture ) step by step how to do this pleaseeeeee