它被称为前置放大器或前置放大器。
简要介绍了新型低噪声快电荷灵敏前置放大器。
A new low noise, fast charge sensitive preamplifier developed recently is introduced in brief in this paper.
前置放大器和基线噪声水平均接近国外最好水平。
The system approaches previously reported systems in terms of preamplifier noise and the base line noise level.
没有前置放大器，软静音，有时面具极其微弱的信号。
Without a preamp, the soft mute can sometimes mask extremely weak signals.
比较器是前置放大器与动态锁存器组成的开关电容电路。
It is a switch capacitor circuit which consists of the preamplifier and dynamic latch.
这种变压器耦合线路前置放大器是最终的音频注意建材工程。
This transformer coupled line pre-amplifier is the ultimate in Audio Note DIY engineering.
因此，一个合格的前置放大器必须满足各个性能方面的要求。
Therefore the capability of a competent preamplifier should meet the requirements of all aspects.
利用前置放大器和滤波器有效滤除掉呼吸，心电，人体等干扰。
Preamplifier and filter were used for cancellation of respiratory ECG, body interference.
提出一种用于提取神经电信号的新型单片集成CMOS前置放大器。
A monolithic integrated CMOS preamplifier is presented for neural recording applications.
文章给出了电子秤的机械稳定性和高稳定度前置放大器的研究结果。
This paper describes the working of the electronic-weighing system and a preamplifier used in this method.
这些卡中包含一个内置的前置放大器，是通过一个微芯片处理器来控制的。
These cards include a built in preamplifier and are controlled through a microchip processor.
光接收机前端放大电路主要由两个关键电路构成：前置放大器和主放大器。
The front-end amplifier for optical receiver is made up of two important circuits: preamplifier and main amplifier.
在分析前置放大器噪声的基础上，提出了抑制噪声和提高检测灵敏度的方法。
Based on the analysis of the noise of the prefixed amplifier, the paper introduced the ways to depress noise and to improve the measurement sensitivity.
检测器内部的前置放大器将微弱的电场信号放大后，送报警器进行比较处理。
Detector internal preamplifier after weak electric signal amplification, comparing to send alarm processing.
硬盘驱动器控制信号发送到前置放大器和前置选择头部硬盘在目前的时刻需要。
HDD sends control signals to the preamp and the preamp selects the head which HDD needs at the current moment.
设计了具体的LED光源的驱动电路，以及前置放大器、减法器等的具体电路。
Have designed the concrete drive circuit of LED light sources and the concrete circuits of preamplifier and subtracter, etc.
感应磁力仪与前置放大器之间的匹配问题是大地电磁测深仪中最关键的一项技术。
Matching a inductive magnetometer with its preamplifier is the keyest technique in magnetotelluric sounding system.
该系统分为前置放大器、带阻网络、FPGA数字处理模块、功率放大器等模块组成。
The system incorporates preamplifier, band-stop network, FPGA digital processing module and power amplifier circuits.
此外，为消除各种干扰信号，前置放大器采用差动放大方式来检测次级端上的信号变化。
Additionally, the head amplifier adopts a differential amplification mode to test the change of the signals on the secondary end for eliminating various interfering signals.
作为光接收机的关键部分，前置放大器的性能在很大程度上决定了整个光接收机的性能。
The performance of a preamplifier has great effect on the performance of an optical receiver.
脑电信号通过前置放大器放大后，由C8051F 020内部的12位ADC进行采样。
The 12-bit ADC in C8051F020 samples the EEG signal amplified by the preamplifier.
通过使用带低通滤波器的前置放大器降低了读出噪音，研究了读出噪音与读出速度的关系。
The CCD signal preamp with low pass filter is used to minimize the readout noise. The relationship between the readout noise and the readout speed is researched.
分布式放大器以其超宽带、低噪声、高增益等特性成为光接收机前置放大器的优良选择方案。
Distributed amplifier which has characteristics of ultra-wideband, low noise, high gain etc is a good option of photoreceiver pre-amplifier.
提出了电荷灵敏前置放大器应用于APD激光脉冲探测系统以提高探测距离和探测精度的方法。
A method that charge sensitive preamplifier used in APD detection system of laser pulse was presented to enhance the range and precision of the detection system.
介绍了一种双路高阻抗电化学测试前置放大器的电路设计原理、元件选择、安装调试及其应用。
This paper introduces the circuit design principle, component selection, installment, testing and application of a two-way impedance electric chemical test pre-placed magnifier.
重点讨论光盘驱动器中ld驱动器电路、RF前置放大电路与伺服前置放大器电路的设计与实验。
Designand Experiment of a driver circuit of LD, RF forward amplifier circuit and servo forward amplifier circuit for the optical disk driver are discussed emphatically.
同时指出了这种连续波弱信号CO2激光放大研究用于CO2相干激光雷达前置放大器的可能性。
Some effects are achieved. In the meantime, the possibility of using the study result for the preamplifier of CO2 coherent laser radar is also analyzed.
然而，混乱的根源之一是拨动开关，这是我们不得不麦克风设置适当的操作（包括前置放大器）。
One source of confusion, however, was the toggle switch, which we had to move to the microphone setting (which includes a preamp) for proper operation.
设计了与CMOS工艺兼容的光电单片接收机电路，其中包括光电探测器、前置放大器和主放大器。
Circuits of CMOS-process-compatible monolithic photoreceivers are designed. The circuits include photodetector, pre-amplifier and main amplifier.
为了获得高的灵敏度，本设计采用了噪声系数很低的前置放大器，并进行了可靠的接地、屏蔽等处理。
To achieve high sensitivity, the pre-amplifier with very low noise figure is adopted in the design, and reliable grounding and shielding processing are performed.
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