Translation guide
A device that reduces voltage from a higher level to a lower level, commonly used with electronics from different countries.
A transformer that steps down voltage for practical use with appliances or electronics.
Standard technical term for a step-down transformer. Commonly used in electrical engineering and product descriptions.
海外の電化製品を使うには降圧トランスが必要です。
You need a step-down transformer to use overseas appliances.
More formal or written term. Often seen in technical manuals or specifications.
この降圧変圧器は入力電圧を100Vに変換します。
This step-down transformer converts the input voltage to 100V.
Descriptive phrase used in everyday conversation when the technical term is not known.
電圧を下げるトランスを買わないと、この機器は使えません。
I have to buy a step-down transformer, or I can't use this device.
A step-down transformer is different from a simple plug adapter. In Japanese, a plug adapter is 変換プラグ (へんかんプラグ). Make sure to specify 降圧 (step-down) if voltage conversion is needed.
Loanword from English 'down transformer', used in some technical contexts but less common than 降圧トランス.
ダウントランスを使って電圧を変換します。
Use a down transformer to convert the voltage.