Ideal Transformer Calculator

Find secondary voltage and current from the turns ratio.

Secondary voltage (V) 23

Secondary current (A) 10

Formula: V_s/V_p = N_s/N_p

Step-by-step with your numbers:

1. Values used:

2. Primary voltage = 230 V

3. Primary turns = 1,000

4. Secondary turns = 100

5. Primary current = 1 A

7. Secondary voltage = 23V

8. Secondary current = 10A

Did we solve your problem today?

An ideal transformer changes voltage and current by its turns ratio while conserving power.

The math behind it

V_s/V_p = N_s/N_p, and current scales inversely so that V_p·I_p = V_s·I_s.

230 V, 1000:100 turns → 23 V secondary at 10 A.

Does power change?

No — an ideal transformer conserves power; real ones lose a little to heat.