じゅん方向 ほうこう電圧 でんあつ降下 こうかじゃありませんでした
junhōkōden'atsukōkajārimasendeshita

Noun
Desu Copula

The polite, past negative form of 順方向電圧降下

1. Was not a forward voltage drop.; Was not a forward voltage fall.

Past/Perfective
Negative
Polite
Terminal Form