可か変へん変へん圧あつ器き

noun

variable transformer

Technical term for a transformer whose output voltage can be adjusted, often used in electrical engineering contexts.

• 実じっ験けんでは可か変へん変へん圧あつ器きを使つかって電でん圧あつを調ちょう整せいした。

  In the experiment, we adjusted the voltage using a variable transformer.