operational amplifier; op-amp
Technical term in electronics and computing; often abbreviated as オペアンプ in practice.
The operational amplifier is a fundamental component of analog circuits.
In this circuit, the operational amplifier is used as an inverting amplifier.
Common abbreviation of 演算増幅器, used more frequently in casual technical contexts.
Compound of 演算 (operation, calculation) + 増幅器 (amplifier), a calque of English 'operational amplifier'.