Transformer – Summary of formulas

Remember `V_1/V_2=N_1/N_2`

Then it follows:

`V_1\ \I_1=V_2\ \I_2`

and again it follows:

`V_1/V_2=I_2/I_1`

Therefore:

`I_2/I_1=N_1/N_2`

Remember the first formula and all the others follow.