1.
amplifier — an electronic device that increases the strength of a signal, especially an audio or radio-frequency signal
An electronic device or circuit that increases the power, voltage, or current of a signal. Used in audio equipment, radio receivers and transmitters, instrumentation, and many other devices. In everyday audio contexts, the loanword アンプ is far more common, but 増幅器 remains the standard technical term.
Compound of 増幅 ('amplification') and 器 ('device, instrument'). Literally 'amplifying device.'
Usage
- The standard technical term in electronics and physics for an amplifying device or circuit.
- In everyday audio/hi-fi contexts, the katakana loanword アンプ (from 'amplifier') is much more common; 増幅器 appears mainly in textbooks, spec sheets, and technical writing.
- Often modified by type: 音声増幅器 ('audio amplifier'), 電力増幅器 ('power amplifier'), 高周波増幅器 ('radio-frequency amplifier').
Common collocations
- 信号を増幅器で増幅する: to amplify a signal with an amplifier
- 増幅器を内蔵する: to have a built-in amplifier
- 高利得の増幅器: a high-gain amplifier
- 音声増幅器: audio amplifier
Similar words
- アンプ: amp, amplifier — the everyday katakana term, especially for audio.
- 増幅: amplification (as a noun / suru-verb) — the action or process rather than the device.
- 拡声器: loudspeaker, megaphone — a related but distinct device; contains an amplifier but also speakers.
- 受信機: receiver — often contains amplifier circuits but is a complete device for receiving signals.