本文重点介绍了KD1411的以下三个主要特点：（1）增益可编程控制的微弱信号放大器的设计；
This paper lays stress on the description of the three main features of KD1411: 1. the design of weak signal DC amplifier with programmable gain;
接收器和放大器接收来自副反射器的无线电波，并使这些微弱的无线电波强大到足以被记录下来并转化成电子信号。
A receiver and amplifier receive the radio waves from the sub reflector, and make these weak radio waves strong enough to be recorded and turned into electronic signals.
在单传感器和三传感器设计中，传感器产生的微弱信号都会被放大。
In both single sensor and triple sensor designs, the weak signal created by the sensors is amplified.
当发射光照到相机的传感器上时，每个像素点抓取一个特定的波长，并对匹配波长的光线进行电子放大。 从仅有几个光子的微弱的原始信号，放大到可见的强度。
That amplifies the original dim signal, composed of just a few photons, until it becomes visible.
提出了应用差动放大理论和灵敏度不同的传感器来完成强噪声环境下微弱声信号提取的方法。
A method of sound detection under strong noise conditions is advanced applying the theory of differential amplifier and utilizing transducers having different sensitivities.
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.
最后对系统的总体设计进行了研究，并设计和实现了一种微弱信号的放大电路。
Finally, it researches the general design of system, design and finish a amplified circuit of weak signal.
锁相放大是微弱信号检测的重要手段。
Lock-in amplifying (LIA) is one of important means for weak signal detection.
阐明了在工业环境下对微弱信号的放大和处理方法。
An efficient method to amplify and process weak signals in industrial environment is presented.
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.
根据安培检测和恒电位器原理，利用数据放大器采集放大微弱信号，研制了一种新型微安培检测器。
A new micro-ampere detector, which USES the data amplifier to enlarge the weak signal, is developed according to the principle of the ampere detection and the potentiostat.
前置放大器电子线路或装置，用来探测并加强无线电接收机所发出的微弱信号，从而使其达到更加有力的增幅程度。
An electronic circuit or device that detects and strengthens weak signals, as from a radio receiver, for subsequent, more powerful amplification stages.
由于生物电信号非常微弱，容易受量测环境及电路本身等因素所影响，故要求该放大器具有低噪声和低失调电压的性能。
Due to its relative low amplitude properties, the bioelectricity signal is easy influenced by surrounding factor, the amplifier with low noise and voltage offset is required.
文章介绍了通过预放大、可编程放大和滤波处理，在噪声信号中较好地对微弱信号进行提取和抗干扰设计的方法。
The paper introduces the methods of getting signal from the faint signal and anti-jamming in noise, and the methods include pre process, gain programmed amplifier and filter.
针对火灾探测过程中的光电探测器输出的微弱信号设计了一个微变信号提取放大电路。
A new circuit has been designed and developed for picking up and amplifying the weak signals of a photoelectric detector in fire detecting system.
PGA309作为数字化可编程信号调理芯片，主要用于电阻桥式压力传感器，将微弱的传感器桥路信号进行放大输出。
As a digital programmable chip of signal conditioning chip, PGA309 is mainly used in resistance bridge pressure sensors, it amplifies and outputs the weak signal from the sensor.
由于声表面波压电效应产生的电压信号非常微弱，一般放大不能分辨出信号电压和噪声电压。
Generally, because the output voltage signal is very weak, the signal voltage and the noise voltage can't be distinguished.
这种限制可以被中继站所克服。中继站可以捕捉到微弱的信号，然后把它放大，再用不同的频率重新发送。
This limitation can be overcome by "Repeaters," which pick up weak signals, amplify them, and retransmit them on a different frequency.
锁相放大器在微弱光电信号检测中有着广泛的应用。
Lock-in amplifiers are used widely in low photoelectric signal detecting.
本文提出一种放大微弱直流信号的方法，同时设计了实现这一方法的直流放大器电路。
In this paper, a method used to amplify faint direct current signal is put forward, and the circuits of direct current amplifier to realize the method are devised.
为将接收二极管上的微弱信号送到A／D转换器处理，采用锁定放大原理设计接收信号的调理电路。
We use the principle of lock - in amplifier to amplify the weak singal and send it to A/ D conversion properly.
该电路应用斩波技术，大大降低了低频噪声，实现了对低频微弱信号的放大。
The circuit employs chopper technique which can effectively reduce the low frequency noise and amplify the weak signals.
锁相放大技术对被测信号进行窄带放大，锁相放大器结合示波器输出了被测信号的周期变化部分，实现了光热法测量中微弱信号的测量。
By narrowing the bandwidth of the signal and amplifying it by a lock-in amplifier, the fluctuating components of the signal can be shown on an oscillograph with lock-in amplifier.
该电路具有放大功能，非常适合对微弱信号的测量及处理。
The proposed rectifier circuits are suitable for small signal measurement and processing.
设计实现了基于差分后谐波检测的微弱信号处理电路、前置放大电路、差分电路、调制电路和光源温度控制电路及电流驱动电路等。
The circuit of Photoelectricity Weak Signal Detection, preamplifier circuit, difference circuit, modulation circuit, optical source thermal control and current drive circuit etc. are designed.
理论与实践都证明这种新型光检测放大器信噪比较高，能对微弱的PIN光信号进行有效地检测和放大。
Experimental results show that a high SNR is obtained and a weak PIN optic signal can be detected and amplified effectively.
更换了运算放大调理电路增强了系统的共模抑制能力，改善微弱信号传输中的问题；
The MCU replaces the operational amplifier circuit so as to strengthen the system of common-mode rejection, improve the problems of weak signal transmission.
随机共振在微弱信号的增强放大和检测方面有着独特的优势。
The stochastic resonance effect has particular advantages on enhancing and detecting weak signals.
在电路设计上采用锁相放大器来提取微弱信号，最大限度的抑制噪声，提高系统的信噪比。
For the signals are very weak, the lock-in amplifier is employed to extract the signals in the circuit design. It can inhabit the noise in the most and maximize the signal-to-noise.
在电路设计上采用锁相放大器来提取微弱信号，最大限度的抑制噪声，提高系统的信噪比。
For the signals are very weak, the lock-in amplifier is employed to extract the signals in the circuit design. It can inhabit the noise in the most and maximize the signal-to-noise.
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