// multi-utility computation suite · offline · instant · precise
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eng.transformer-ratio Calculator
Calculates the turns ratio, secondary voltage, and current ratio for an ideal single-phase transformer. An ideal transformer conserves power — primary VA equals secondary VA, which means when voltage steps up, current steps down proportionally.
Inputs
Np
Reference formula or conversion factor shown for context.
Ns
Reference formula or conversion factor shown for context.
Vp
Electric potential difference (V). Drives current through a circuit. Household: 120 V (US) or 230 V (EU/UK).
Ip
Rate of charge flow (A). I = V/R. Above ~100 mA through the body can be lethal. Fuses protect against overcurrent.
Results
turns ratio
The proportional relationship between two quantities.
secondary voltage
Electric potential difference between the two terminals (V). In AC systems, quoted as RMS — 230 V mains has a peak of ~325 V.
secondary current
Electric charge flow rate (A). Governs wire sizing — too much current causes dangerous heating. Fuses protect circuits from overcurrent.
primary power
Reference formula or conversion factor shown for context.
secondary power (ideal)
Sample size or count used in the calculation.
type
The classification or type assigned based on the inputs.