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.
![](/images/user/base/Maths/Logarithms/Reference%20Tables/reference-log-table-1.4df6ee6.jpg)
![](/images/user/base/Maths/Logarithms/Reference%20Tables/reference-log-table-2.d516bb3.jpg)
![](/images/user/base/Maths/Logarithms/Reference%20Tables/reference-anti-log-table-1.b0b0513.jpg)
![](/images/user/base/Maths/Logarithms/Reference%20Tables/reference-anti-log-table-2.f89189d.jpg)
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.