basic

Ideal Transformer Current Balance Calculator

I_p / I_s = N_s / N_p (and V_p · I_p = V_s · I_s).

Compute the secondary (load) current of an ideal transformer from the primary current and the turns ratio, and verify power balance: V_p · I_p = V_s · I_s.

Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

V
A

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

I_s = I_p · N_p / N_s; V_s = V_p · N_s / N_p.

In depth

Compute the secondary (load) current of an ideal transformer from the primary current and the turns ratio, and verify power balance: V_p · I_p = V_s · I_s.