Source google image: http://3.bp.blogspot.com/-Csn5SuBlkJA/VZiYZ9607fI/AAAAAAAAAXM/jjZFtlkgfqM/s1600/image014.png
Schéma électrique transformateur
Source google image: http://3.bp.blogspot.com/-Csn5SuBlkJA/VZiYZ9607fI/AAAAAAAAAXM/jjZFtlkgfqM/s1600/image014.png