Transformer Turns Ratio

The transformer turns ratio, which is the ratio of the number of turns in the secondary coil to the number of turns in the primary coil, is a fundamental concept in electromagnetism related to transformers. A transformer's ability to 'transform' one AC voltage level to another is based on this principle. It relies on Faraday's Law of Induction which states that the induced voltage in a coil is proportional to the product of its number of turns and the rate of change of magnetic flux. In this formula, Ns represents the number of turns in the secondary coil, and Np is the number of turns in the primary coil. This ratio can help predict the output voltage of a transformer relative to the input voltage, given by the formula Vs/Vp = Ns/Np, where Vs is the secondary voltage and Vp is the primary voltage. Calculating the turns ratio is critical in the design of transformers to ensure that they can supply the required voltage and current in their application.