What do you call a transformer with a lower secondary voltage than primary voltage?

A transformer with a lower secondary voltage than its primary voltage is referred to as a step-down transformer. This type of transformer effectively reduces the voltage from the primary winding to a lower value at the secondary winding. The primary winding is connected to the high-voltage source, while the secondary winding provides the lower voltage output needed for various applications.

Step-down transformers are widely used in electrical distribution systems to safely deliver energy at the lower voltages required for residential or certain industrial applications. By converting high voltage to low voltage, they help protect the electrical devices and ensure safe operation.

The terms 'step-up transformer,' 'voltage scaler,' and 'current reducer' refer to different transformer functions or concepts. A step-up transformer increases the voltage from primary to secondary. While a voltage scaler could imply a transformer that adjusts voltage, it is not a standard term in the context of transformers. Lastly, a current reducer suggests a focus on decreasing current, which does not directly correspond to the voltage reduction characteristic of a step-down transformer. Thus, the clear definition and function associated with a step-down transformer confirm that it is indeed the correct choice for describing a transformer that has a lower secondary voltage than the primary voltage.