Transformer Calculator

Calculate transformer output voltage and current using the turns ratio: V2/V1 = N2/N1.

V
A

Secondary Voltage

12.00 V

Turns Ratio (N2/N1)0.1000
Secondary Current10.0000 A

Secondary Voltage vs Primary Voltage

Voir la formule →

Formule

## Transformer A transformer transfers electrical energy between circuits via magnetic coupling, changing voltage and current levels. ### Formulas **V2 / V1 = N2 / N1** (voltage ratio equals turns ratio) **I2 / I1 = N1 / N2** (current ratio is inverse of turns ratio) Power is conserved in an ideal transformer: P1 = P2.

Exemple Résolu

A step-down transformer: 120 V input, 500 primary turns, 50 secondary turns, 1 A primary current.

  1. 01Turns ratio = N2/N1 = 50/500 = 0.1
  2. 02V2 = V1 * N2/N1 = 120 * 0.1 = 12 V
  3. 03I2 = I1 * N1/N2 = 1 * 500/50 = 10 A
  4. 04Power check: 120*1 = 12*10 = 120 W