Ta co tu thong qua moi vong cua cuon 1 la
$\Delta \phi _{1}=\frac{U_{01}}{N_{1}w}$
Do cac duong suc cua cuon nay chia deu cho cho 2 nhanh con lai nen
$\Delta \phi _{2}=\frac{U_{o2}}{N_{2}w}=\frac{\Delta \phi _{1}}{2}=\frac{U_{o1}}{2N_{1}w}$
$=>U_{o2}=\frac{N_{2}}{2N_{1}}.U_{01}=U_{o1}=>U_{2}=U_{1}=60V$