voltage divider
type: Concept
narrower: autotransformer
preferred label: تقسیم‌کننده ولتاژ @fa

autotransformer
type: Concept
broader: power transformer
broader: voltage divider
preferred label: اتومبدل @fa

power transformer
type: Concept
narrower: autotransformer
preferred label: مبدل قدرت @fa