絶縁 ぜつえん増幅 ぞうふく ではありませんでした
zetsuenzōfukukidewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 絶縁増幅器

1. Was not an isolator amplifier.; Was not a shielding amplifier.

Past/Perfective
Negative
Polite
Formal Register
Computing