高內阻電源 的英文怎麼說

中文拼音 [gāonèizǔdiànyuán]
高內阻電源 英文
high-resistance power supply
  • 高 : Ⅰ形容詞1 （從下向上距離大; 離地面遠） tall; high 2 （在一般標準或平均程度之上; 等級在上的） above...
  • 內 : 名詞1. （內部; 里頭; 里邊） inner; inside; within 2. （妻子或妻子的親屬） one's wife or her relatives 3. （姓氏） a surname
  • 阻 : 動詞（阻擋; 阻礙） block; hinder; impede; obstruct
  • 電 : Ⅰ名詞1 （有電荷存在和電荷變化的現象） electricity 2 （電報） telegram; cable Ⅱ動詞1 （觸電） give...
  • 源 : 名詞1. （水流起頭的地方） source （of a river）; fountainhead 2. （來源） source; cause 3. （姓氏） a surname
  • 電源 : source; current source; electric source; power pack; power supply; power source; source of power ...
  1. According to the request of this subject, we have developed the system hardware and software for the slave device and the inspection software running on the pc. in this paper all of the followings is illustrated detailedly, such as the research on the principles of measurement and its realization, three means of water - level measurement that are separately based on photo electricity coder, pressure sensor and potentiometer ; selection of the microchip, we choose an advanced integrated soc ( system on chip ) microchip c8051f021 as the main controller ; realization of signal sampling, processing and its conversion in the mcu ; application of high precision 16 bits adc cmos chip - - ad7705 in our system, designing its interface with the microchip and relevant program ; using a trickle charge timekeeping chip ds1302 in the system which can provide time norm and designing of its i / o interface and program ; additionally, a 4 ~ 20ma current output channel to provide system check - up using ad421. in the system, ad421, ad7705 and the microchip compose spi bus ; to communicate with the master pc, here we use two ways which are separately rs232 and rs485 ; moreover, there are alarm unit, keyboard unit, power supply inspection unit and voltage norm providing unit in the system

    針對研製任務的要求，課題期間研製了下位機系統硬體和軟體，開發了上位機監控軟體，其中所作的具體工作包括：測量原理的研究和在系統中的實現，在本次設計中用三種方法來進行水位測量，分別是旋轉編碼器法、液位壓力傳感器法和可變電阻器法；主控晶元的選擇，我們選用了高集成度的混合信號系統級晶元c8051f021 ；實現了信號的採集和處理，包括信號的轉換和在單片機內的運算；高集成度16位模數轉換晶元ad7705在系統中的應用，我們完成了它與單片機的介面設計及程序編制任務；精確時鐘晶元ds1302在系統中的應用，在此，我們實現了用單片機的i o口與ds1302的連接和在軟體中對時序的模擬，該晶元的應用給整臺儀器提供了時間基準，方便了儀器的使用；另外，針對研製任務的要求，還給系統加上了一路4 20ma模擬信號電流環的輸出電路來提供系統監測，該部分的實現是通過採用ad421晶元來完成的，本設計中完成了ad421與單片機的spi介面任務，協調了它與ad7705晶元和單片機共同構成的spi總線系統的關系，並完成了程序設計；與上位機的通信介面設計，該部分通過兩種方法實現： rs232通信方式和rs485通信方式；系統設計方面還包括報警電路設計、操作鍵盤設計、電源監控電路設計、電壓基準電路的設計。
  2. The thesis has done the widespread investigation and study to the domestic and foreign ’ s technologies of analogy low voltage and low power, and analyzes the principles of work, merts and shortcomings of these technologies, based on the absorption of these technologies, it designs a 1. 5v low power rail - to - rail cmos operational amplifier. when designing input stage, in order to enable the input common mode voltage range to achieve rail - to - rail, it does not use the traditional differential input pair, but use the nmos tube and the pmos tube parallel supplementary differential input pair to the structure, and uses the proportional current mirror technology to realize the constant transconductance of input stage. in the middle gain stage design, the current mirror load does not use the traditional standard cascode structure, but uses the low voltage, wide - swing casecode structure which is suitable to work in low voltage. when designing output stage, in order to enhance the efficiency, it uses the push - pull common source stage amplifier as the output stage, the output voltage swing basically reached rail - to - rail. the thesis changes the design of the traditional normal source based on the operational amplifier, uses the differential amplifier with current mirror load to design a normal current source. the normal current source provides the stable bias current and the bias voltage to the operational amplifier, so the stability of operational amplifier is guaranteed. the thesis uses the miller compensate technology with a adjusting zero resistance to compensate the operational amplifier

    本論文對國內外的模擬低電壓低功耗技術做了廣泛的調查研究，分析了這些技術的工作原理和優缺點，在吸收這些技術成果基礎上設計了一個1 . 5v低功耗軌至軌cmos運算放大器。在設計輸入級時，為了使輸入共模電壓范圍達到軌至軌，不是採用傳統的差動輸入結構，而是採用了nmos管和pmos管並聯的互補差動輸入對結構，並採用成比例的電流鏡技術實現了輸入級跨導的恆定;在中間增益級設計中，電流鏡負載並不是採用傳統的標準共源共柵結構，而是採用了適合在低壓工作的低壓寬擺幅共源共柵結構;在輸出級設計時，為了提高效率，採用了推挽共源級放大器作為輸出級，輸出電壓擺幅基本上達到了軌至軌;本論文改變傳統基準源基於運放的設計，採用了帶電流鏡負載的差分放大器設計了一個基準電流源，給運放提供穩定的偏置電流和偏置電壓，保證了運放的穩定性;並採用了帶調零電阻的密勒補償技術對運放進行頻率補償。
  3. Ni - cd cylindrical cell has the properties of small internal resistance, long service life, resistant to over charge and discharge, low self discharge, wide operation temperature range ( - 20 + 40 ) and high reliability. they are suitable for high rate discharge and widely used in the fields of electrical tools, railway trains, lighting, fire prevention and military

    鎘鎳圓柱密封堿性蓄電池具有內阻小，使用壽命長，耐過充過放電，自放電小，使用溫度范圍寬（ - 20 + 40 ） 、可靠性高等特點，適用高倍率（大功率）放電使用，廣泛應用於電動工具、列尾電源、照明、消防、儀器儀表以及軍事領域。
  4. In view of the seepage hazards existent in the homogeneous soil dam in landong reservoir and on the basis of physical property of the media and geophysical characteristics of the study area, the authors reasonably selected such geophysical techniques as high - density resistivity, ground penetrating radar, transient rayleigh wave and spontaneous polarization to make integrated exploration and find out the seepage path of water sources, thus providing grounds for evaluating stability of the dam body and designing the reinforcement plan

    摘要針對藍洞水庫均質大壩出現散滲等病險，根據區內各介質物理性質及地球物理特徵，合理選擇了高密度電阻率、探地雷達、瞬態瑞雷波和自然電場4種物探方法進行綜合勘查，查明病險的水源來向，為評估壩體的穩定性和加固處理設計提供依據。
  5. Abstract : in view of the seepage hazards existent in the homogeneous soil dam in landong reservoir and on the basis of physical property of the media and geophysical characteristics of the study area, the authors reasonably selected such geophysical techniques as high - density resistivity, ground penetrating radar, transient rayleigh wave and spontaneous polarization to make integrated exploration and find out the seepage path of water sources, thus providing grounds for evaluating stability of the dam body and designing the reinforcement plan

    文摘:針對藍洞水庫均質大壩出現散滲等病險，根據區內各介質物理性質及地球物理特徵，合理選擇了高密度電阻率、探地雷達、瞬態瑞雷波和自然電場4種物探方法進行綜合勘查，查明病險的水源來向，為評估壩體的穩定性和加固處理設計提供依據。
  6. In the last few years, the polution and harm of harmonic hi the power system is becoming more and more serious. the lc passive filter that is used widely ca n ' t satisfy the new demands of harmonic filter. the combined system of shunt lc passive filter and active power filter are put forward, and this paper focus on the following four aspects. 1

    近年來，電力系統諧波的污染和危害日趨嚴重，而國內普遍使用的lc無源濾波器逐漸不能適應濾波的新要求，本文提出了與可變參數lc濾波器混合使用的並聯型有源電力濾波器系統，並著重研究了以下幾個主要問題： 1 、 lc無源濾波器（主要是高通濾波器）參數調節對阻抗特性和無功補償的影響。
  7. According to basic theories for distributing regular of electric field about surface single spot current source and high density resistivity prospecting method in this paper. put forward an installation which use one current electrode or dipole current electrodes and the others prospecting at the same time to realize high density resistivity method by office date processing, such as wenner pole - dipole a, wenner pole - dipole b, wenner alpha, wenner beta, wenner gamma and pole - pole array

    摘要運用地面點電流源電場的分佈規律和高密度電阻率法的基本思想，提出了分別利用單極供電、偶極子供電，其餘電極同時測量，通過室內數據整理實現高密度電阻率法的溫納對稱四機、溫納偶極、溫納微分、溫納三極a 、溫極三極b和二極等裝置。
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