We found one dictionary that defines the word step-down transformers:

General (1 matching dictionary)

1. step-down transformers, step-down transformers: Collins English Dictionary

(Note: See step-down_transformer as well.)

Definitions from WordNet (step-down transformer) ▸ noun:  a transformer that reduces voltage ▸ Also see step-down_transformer ▸ Words similar to step-down transformers ▸ Usage examples for step-down transformers ▸ Idioms related to step-down transformers ▸ Wikipedia articles (New!) ▸ Words that often appear near step-down transformers ▸ Rhymes of step-down transformers ▸ Invented words related to step-down transformers