If you only have an old turntable and no amplifier, you will need to amplify the signal using a pre-amplifier before plugging it into the PC sound card.

如果你只有一個(gè)老唱盤，沒有放大器激情综合五月综合激情，你需要使用前置放大器將信號放大久久免费观看视频www，然后再將其與電腦聲卡連接。

There are prepositive and main amplifier circuits in the detector, all-in-one design assures better stability and higher reliability of the instrument.

探測器內(nèi)包含前置放大器與主放大器電路国产精品午夜掌交A片，一體化設(shè)計(jì)保證儀器有更好的穩(wěn)定性和更高可靠性

Advanced Integrated Circuits are used in signal process. The prepositive signal processor is placed close to the model rotor. The instrument amplifier, the voltage and current converter/transmitter, the isolation amplifier, the isolation power unit, the current and voltage converter etc.

將先進(jìn)的集成元器件應(yīng)用于測試電路的研制中国产精品猎奇另类视频，在國內(nèi)首次將前置信號處理器放置于模型旋翼附近，并采用儀用放大器国产成人黄色网站视美女，電壓/電流轉(zhuǎn)換日韩欧美在线视频一区，隔離放大器，隔離電源亚洲午夜精品高潮影院，電流/電壓轉(zhuǎn)換等措施以實(shí)現(xiàn)信號遠(yuǎn)距離傳輸下的高信噪比信號測量中文字幕人妻丝袜九区乱。

It is a trend that the proporational control valve subsititute for servo valve in most field of engineering applications. This paper introduces a digital control-amplifier for electro-hydrolic proporational direction throttle valve,which is aggregatied with the valve controlal system.Its core is the system of Intel 8098 microcontroler.

在廣大的工程應(yīng)用領(lǐng)域，以比例閥替代昂貴的伺服閥是一種趨勢久久久精品一二三区，本文提出了電液比例方向節(jié)流閥數(shù)字控制放大器免费黄一区，它以INTEL 8098單片機(jī)系統(tǒng)為硬件核心，控制放大器的硬件系統(tǒng)和軟件系統(tǒng)18岁禁止黄片，與閥控系統(tǒng)融為一體1313午夜精品福利片。

Thedetailed work includes: 1、The basic theory of Ka-band power amplifier is researched, and four structures usedoften in millimeter wave Wilkinson divider, rat-race hybrid, dire...

利用放大芯片RMDA2042097国产男人的天堂在线视频，制作了單片MMIC功率放大器亚洲一级aⅴ无码毛片中文国产，測試表明該放大器在工作頻帶內(nèi)增益大于20dB，符合設(shè)計(jì)要求久操B。

During the refurbish process about 105 parts on older amps and about 65 on newer amps are changed, replaced, or added.

在翻修過程中對105名老年人放大器部分一级毛片aa久久做，介紹了新的放大器有65變，更換或補(bǔ)充日韩欧美一级A片在线观看网址。

In this thesis, the theory of distributed fiber Raman amplifier is given. The main research contents are given as follows:The basic theory of Raman scattering.

本文對分布式光纖喇曼放大器進(jìn)行了理論分析一级黄色AV录像，并對分布式光纖喇曼放大器的增益特性、偏振相關(guān)性和溫度穩(wěn)定性進(jìn)行一系列的介紹和研究aaaa片。

So we designed a adaptive synchronizing controller based on hereinbefore hardware environment: first a small magnitude reference signal r is outputted to system through the signal card (to ensure that the vibrating system works in a linear state), and this signal is sent to the moving coil of vibrator through the power amplifier, so vibration is produced through electromagnetic induction. Secondly the vibration signal can feedback to the data acquiring card in the servo system through the acceleration sensor on the Vibroseis reactor M〓 and the base-plate M〓, then the computer can get the current vibrating state y〓 of the coil of vibrator according to the feedback information from the data acquiring card, and give a real time comparing between the current state y〓 and the reference output y〓 of the set-in reference model with current reference input being r , then regulates the correlative controlling parameters according to the error e〓=y〓-y〓 till y〓→y〓, finally normal signal sweeping begins with a certain phase fixed. Meanwhile a synchronization signal for seismic signal record is sent to seismograph from synchronization signal outputting component in the Vibroseis system to perform the controlling process of synchronization of sweeping phases.

為此A片诱惑视频网址，我們基于以上的硬件環(huán)境設(shè)計(jì)了一個(gè)自適應(yīng)同步控制器：首先通過信號發(fā)生卡對系統(tǒng)輸出小幅度的參考信號r(從而保證振動(dòng)系統(tǒng)工作處于線性狀態(tài))，信號通過前置放大器欧美美熟妇激情一区二区三区在线、功率放大器等送到激震器動(dòng)圈黄片对白3qA片对白3p，并通過電磁感應(yīng)產(chǎn)生振動(dòng)，振動(dòng)信號通過可控震源激震器反應(yīng)塊M〓和基板M〓上的加速度傳感器反饋給伺服系統(tǒng)中的數(shù)據(jù)采集卡久久精品国产99国产精2020丨，工控計(jì)算機(jī)根據(jù)采集卡的反饋信息毛黄视频，獲取當(dāng)前激震器動(dòng)圈的振動(dòng)狀態(tài)y〓，并實(shí)時(shí)地將該狀態(tài)與內(nèi)置的參考模型在當(dāng)前參考輸入r下的參考輸出y〓進(jìn)行辨識丁香五月人人妻人人爽，再將兩者輸出誤差e〓＝y(tǒng)〓-y〓對系統(tǒng)的有關(guān)控制參數(shù)進(jìn)行調(diào)整谁有黄色网站免费，直至y〓→y〓，最后在經(jīng)過某一固定的相位后在线观看黄片免费观看，開始信號的正常掃描過程www插插插99，與此同時(shí)，由可控震源系統(tǒng)的同步信號輸出部件向地震儀送出一地震信號記錄同步信號亚洲狠狠艹，進(jìn)而完成掃描相位同步控制過程午夜肥婆。

The geophones are connected by long cables to the amplifiers and recording equipment which are often placed in a specially-designed truck.

地震檢波器由長長的電纜連結(jié)到放大器和接收裝置上，而放大器和接收裝置則被放置在一輛專門設(shè)計(jì)的卡車上亚洲男人的天堂网址。

The design for impedance converting circuit of input current,transistor amplifying circuit and converting circuit of output current is presented.The telegrapher equations are adopted to determine the impedance of transmission-line transformer,which is used to convert circuit impedance between signal source and transistor.

討論了放大器輸入回路阻抗變換電路黄色网站黄色毛片、晶體管放大電路以及輸出回路阻抗變換電路的設(shè)計(jì)思想，運(yùn)用電報(bào)方程從理論上推導(dǎo)出用于信號源和晶體管之間阻抗變換的傳輸線變壓器輸入輸出阻抗計(jì)算公式黄色片在线观看视频网站，由此設(shè)計(jì)出模擬信號處理電路中非常重要的AB類高功率放大器欧美在线VAV。