圧あっ粉ぷん磁じ心しん

noun

dust core

Technical term in electronics and magnetics: a magnetic core made by compressing powdered magnetic material, often used in inductors and transformers.

• 圧あっ粉ぷん磁じ心しんは高こう周しゅう波は回かい路ろでよく使つかわれる。

  Dust cores are often used in high-frequency circuits.