Super chopper - stabilized amplifier icl7650 is adopted in the preamplifier circuit . double integrate a / d convertor and the a / d convertor in the cpu are adopted in the circuit 在前置放大电路中采用了自稳零运放icl7650 , a / d转换利用了双积分式a / d转换器mc14433和单片机内部的a / d转换器。
There are various kinds of the self - oscillations in the preamplifier system of the high power laser facility , the origins of them were analyzed in theory 摘要分析了高功率激光装置预放大系统内外各种自激振荡的来源，通过理论计算和实验验证提出了各种自激振荡的抑制方法，并在实践中得到验证。
This paper introduces two types of sensitive charge preamplifier for rn measure device , designing method , debugging process and performance ; and it analyzes the conditions which can be applied 摘要介绍了两种用于氡气测量装置的电荷灵敏前置放大器的实例，给出了设计思想、调试过程和技术指标，说明了它们不同的应用场合。
The preamplifier will drive a low impedance load without alteration in the signal , in fact it can be used as a current source driving a 0 impedance mixer junction without any distortion 这个前级放大器能够驱动一个低阻抗的负载而不会引起信号的变化，实际上它可以用作一个驱动零阻抗混合节点，而又不产生任何失真的电流源。
Discuss the method to improve the efficiency of collecting signal and signal - noise ration . make the setup of detection device , high voltage supply of pmt and low - noise preamplifier ; doing lif detection experiment to green fluorescent dye 详细讨论了提高荧光采集效率和信噪比的措施，制作了探测机构、光电倍增管的高压供电电路和前置放大器。
Design ecg collecting module ， which includes preamplifier ， high pass filter , 50hz notch filter , skin electricity filter , low pass filter , electrical level rising and primary amplifier , adc and mcu , real time clock 设计心电采集模块，包括心电前置放大、高通滤波、工频陷波、肌电滤波、低通滤波、电平抬升和主放大、 a / d转换和单片机，实时时钟。
In the circuit design for weak signal detection , the preamplifier is employed to magnify the signal from pin . and filter circuit is employed to cut down low - frequency signals then the oil contamination can be gotten with second amplifier 在微弱信号检测电路设计上，采用前置放大电路对pin光电二极管输出的微弱电信号进行放大，随之采用滤波电路对放大后的信号进行低频滤波，再由二次放大可以得到油液污染度。
In the design the main work is to measure egg and draw it on the computer . the preamplifier is the ina128 that is a kind of low - power , precise , instrumented product which is produced by burr - brown company in the circle 本课题主要采集的生理信号是心电信号(也可以考虑加多路其它信号) ，心电信号采集系统的前置放大电路采用burr - brown公司的精密低功耗仪表集成放大器ina128 ，以右腿驱动形式提高共模抑制比，降低50hz工频干扰。
This paper is focused on the design of the electronic circuits to improve the system energy resolution , including the design of the preamplifier , the shape amplifier , the base line restorer ( blr ) and the multichannel analyzer ( mca ) , discussing some problems , which should be taken into account in the design 本文着重讨论了电子学线路的设计对改善系统分辨率的影响。包括前置放大电路、成形放大电路、基线恢复电路、脉冲幅度多道分析电路的设计及设计中改善系统能量分辨率应注意的问题。
Based on the research and analysis of system structure of 10 - bit 100msps pipelined cmos adc , according to the system performance , the specifications of sub _ adc is obtained , while the sub _ adc including the preamplifier - latch comparator , the reference ladder resistance and the clock - control encode circuits are discussed in detail 基于对10 - bit100mspspipelinedcmosadc系统结构的分析研究,结合系统性能确定了子adc的指标要求,详细讨论并设计了子adc单元模块的设计,包括预放大锁存比较器,参考电阻串和时钟控制编码电路。
