autotransformer
/ˌɔːtoʊtrænsˈfɔːrmər/
noun
- An electrical transformer with a single winding that acts as both the primary and secondary coil, used to change voltage levels.
- Autotransformers are more efficient than traditional transformers for small voltage adjustments.
- The technician replaced the damaged autotransformer in the power supply unit.
- An autotransformer is often used to step down voltage for household appliances.
Synonyms