![]() ![]() With it, we can easily multiply or divide voltage and current in AC circuits. What are Step-up and Step-down Transformers? ![]() Turns ratio of 10:1 yields 10:1 primary: secondary voltage ratio and 1:10 primary: secondary current ratio. ![]() What we have here is a device that steps the voltage down by a factor of ten and current up by a factor of ten: Notice how the secondary voltage is approximately ten times less than the primary voltage (0.9962 volts compared to 10 volts), while the secondary current is approximately ten times greater (0.9962 mA compared to 0.09975 mA). If the inductances of the two windings are not equal, something interesting happens:Ħ.000E+01 1.000E+01 9.975E-05 Primary windingĦ.000E+01 9.962E-01 9.962E-04 Secondary winding Equality of voltage and current between the primary and secondary sides of a transformer, however, is not the norm for all transformers. So far, we’ve observed simulations of transformers where the primary and secondary windings were of identical inductance, giving approximately equal voltage and current levels in both circuits. ![]()
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