一いち次じ回かい路ろ

noun

primary circuit

Technical term used in electrical engineering and electronics to refer to the main circuit that receives power directly, as opposed to a secondary circuit.

• 変へん圧あつ器きの一いち次じ回かい路ろに過か電でん流りゅうが流ながれた。

  An overcurrent flowed in the primary circuit of the transformer.

• 一いち次じ回かい路ろと二に次じ回かい路ろは絶ぜつ縁えんされている。

  The primary circuit and the secondary circuit are insulated from each other.