降圧変圧器 こうあつへんあつき Meanings Noun step-down transformer See also: 降圧トランス (こうあつトランス). Kanji 降 descend. Read as コウ. 圧 pressure. Read as アツ. 変 change. Read as ヘン. 器 device. Read as キ. Word lists Electricity Jinuma: Japanese Dictionary · Word lists