降こう圧あつ変へん圧あつ器き

noun

step-down transformer

Technical term in electrical engineering. Refers to a transformer that reduces voltage. Often contrasted with 昇圧変圧器 (step-up transformer).

See also: 降圧トランス

• この降こう圧あつ変へん圧あつ器きは入にゅう力りょく電でん圧あつを100Vに下さげます。

  This step-down transformer reduces the input voltage to 100V.