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单词 preamp
释义

preamp /pri:'æmp//ˈpriæmp/

英汉-汉英词典
n. 前置放大器(等于preamplifier)
词组 | 习惯用语
您要查找的是不是:
  • prompt adj. 敏捷的,迅速的;立刻的 vt. 促进;激起;提示;(给演员)提白
  • preempt vt. 先占;先取;以先买权获得
preamps n. 前置放大器(preamp的复数)
preamp n. 前置放大器(等于preamplifier)

网络短语:
Preamps 前置放大器; 话放; 预先截肢图片; 前;
onboard preamp 前级电路
preamp input 前置放大器输入
onboard preamps 琴载前级
XENYX Mic Preamp 无形麦克风前置放大器
INVISIBLE MIC PREAMP 无形麦克风前置放大器
Dual highperformance preamps 高效能的前级放大器
Dual high-performance preamps 高效能的前级放大器
Tape mic and preamp 内建前级含收音麦克风
英语百科

Preamplifier

(重定向自Preamp)
An example of a typical high-end stereo preamplifier.

A preamplifier (preamp) is an electronic amplifier that prepares a small electrical signal for further amplification or processing. A preamplifier is often placed close to the sensor to reduce the effects of noise and interference. It is used to boost the signal strength to drive the cable to the main instrument without significantly degrading the signal-to-noise ratio (SNR). The noise performance of a preamplifier is critical. According to Friis's formula, when the gain of the preamplifier is high, the SNR of the final signal is determined by the SNR of the input signal and the noise figure of the preamplifier.

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