high input impedance 中文意思是什麼
high input impedance
解釋
高輸入阻抗-
To achieve the high impedance required specially designed "electrometer" vacuum tubes, field effect transistor must be used in the input stage.
為適應高阻抗需要，儀器輸入電路中須用特殊設計的靜電計專用電子管、場效應晶體管。 -
If the node is at, or near to, ground then a grounded guard ring will be appropriate, if it is at some other potential it may be necessary to use a high input impedance buffer amplifier, with its input connected to the node, to force the guard ring to the node potential
如果被保護的節點的電位是（或接近）零電位，採用地線保護環最為合適；如果節點電位是其他值，那麼可以用高輸入阻抗放大器組成緩沖器，輸入端連接該節點，輸出端連接保護環。 -
We have designed different measurement instruments according to the methods. the instrument used to measure electrode is a high precision multi - channel system constructed with a iaadc as the core and high input impedance amplifier and low input current multiplexer
對于硫屬玻璃電極，我們設計了以高精度的adc為核心，配以高輸入阻抗低噪聲的前置放大器和低漏電流多路模擬開關的多路精密電極測量系統。 -
Arduino ( atmega ) pins configured as input are said to be in a high - impedance state
介面如設置為input輸入模式將導致該介面處于高電阻狀態。 -
A large amount of experience data accumulated through long term operation is introduced. combined with the definition of relative requirements, the choosing and definition of operation index of high - frequency channels specially used for protection of hubei electric power network are discussed and elaborated through calculation and analysis such as input impedance and channel impedance of transmitter, sensitive voltage of received signal, redundancy of received signal, warning of channel redundancy and warning of channel faults etc
引用了長期運行中積累的大量經驗數據，通過計算分析，結合有關規程規定，探討和闡述了湖北電網繼電保護專用高頻通道諸如收信機輸入阻抗及通道阻抗、收信靈敏電平、收信裕度、通道裕度告警、通道異常告警等運行指標的選取和確定。 -
A resolution method in software is applied to calibrate zero point and full scale of the circuit. software approach to nonlinear correction for sensor and circuit is presented. therefore system error is eliminated, and measurement accuracy of temperature is improved. the signal of acidity electrode is detected by a differential amplifier circuit, which consists of operational amplifiers tlc2254 with high input impedance and low drift
採用橋路和單運放差動放大電路對溫度傳感器信號檢測放大，軟體校正溫度傳感器和測量電路的非線性，軟體校準測量電路的零點和滿度，消除測量電路的系統誤差，提高補償溫度的測量精度；採用高阻、低漂移運放tlc2254組成高阻差動放大電路用於酸度電極信號測量。 -
Compared with the similar research results, the weighted control ic here has the following characteristics : ( 1 ) the circuit structure is simpler ; ( 2 ) the chip ' s fabrication is compatible with standard cmos process ; ( 3 ) n - mosfets with high w / l ratio and short channels are used for weighting and output to reduce the insertion loss ; ( 4 ) the weighting factor varies in a relatively wide range with the controlling signals ; ( 5 ) input and output impedance approach 50 in low frequency ( e. g. 50mhz ), while in higher frequency they slightly deviate from 50, hence the energy reflection lower than 0. 1 ; ( 6 ) it completes the functions of sampling, weighting, controlling and summing of high frequency analog signals
它的加權控制電路與已報道的相關電路相比具有如下特點：電路結構簡單；製造工藝與普通cmos工藝兼容：短溝道，高寬長比的nmos晶體管具有低的通導電阻，將其作為加權、輸出器件可降低由電路引起的插入損耗；改變加權信號，可實現權值在較大范圍內的連續變化；輸入、輸出阻抗在低頻（如50mhz ）下接近50 ，而在高頻下略有偏離50 ，但反射系數均低於0 . 1 ；實現了對高頻信號的取樣、加權、控制、疊加功能的迭加。 -
In order to improve the circuit ' s input impedance, which is affected by insulating resistance of electrode leading wire, terminals and printed circuit board, electrode is connected to the meter through insulating wire of high impedance which is directly welded in the printed circuit board with insulating ring. the deviation of electrode is corrected by software and the algorithm is given
使用高阻絕緣線連接電極，並將高阻絕緣線直接焊在加有絕緣環的印刷線路板上，從而消除電極引線、接線端子和印刷線路板漏電對放大電路輸入阻抗的影響；軟體校正電極偏差，並給出校準演算法。 -
Power vdmos ( vertical double - diffusion mosfet ) is the most favorable device available for high speed, medium power applications because of its characteristics such as high input impedance, high power gain, easy to drive and good thermal stability
功率vdmos （垂直雙擴散mosfet ）以其高輸入阻抗、高功率增益、驅動電路簡單和熱穩定性好等優點，在高速度和中等功率場合得到了廣泛的應用。 -
Usually the bridge circuit has a relatively high input impedance so that it has an insignificant effect on the signals in the transmission line
通常橋接電路具有較高的輸入阻抗，因此傳送線上的信號將不受影響。 -
Csm is a numeric mothed of analyzing static electric field. this paper compares the values of capacitance of different size of plate d and plate e in csm and cst mws. mom is a typical numeric method of researching high - frequency electromagnetic problems. accordingly, this paper computes input impedance of plate e and impedance matrix of traditional two element antenna array of electrically small dipoles separately in mom and cst mws, and then compares them detaily
模擬電荷法（ csm - chargesimulationmethod ）是研究靜電場的一種數值方法，本文比較了模擬電荷法和cstmws對cfa的d 、 e兩盤在不同尺寸下的電容的計算結果;矩量法是經典的研究高頻電磁學問題的數值方法，同時利用矩量法計算了cfa的e盤的輸入阻抗和傳統二元電小偶極子陣的阻抗矩陣，將其結果與cstmws的模擬結果比較。 -
By utilizing the knowledge of digital circuit and simulation circuit, the system designs the pretreatment dealing circuit of the myoelectrical signal, which has the feature of big input impedance well suppress of public module and high gains. then the signal is gathered with " zhentong " data gathering after dealing with, and the software of signal processing is explored before the myoelectric signal is analyzed. after picking up eigenvalue, it is proved that the result is unanimous basically with the data of the relevant materials ; the other is to control artificial hand by the eigenvalue of the myoelectric signa l and at last the system gets very good control results
即利用數字電路和模擬電路等相關知識，設計了具有輸入阻抗大、共模抑制好、增益高等特點的肌電信號前置處理電路，利用「振通」數據採集儀對處理后的信號進行採集，並利用快速傅立葉變換的相關知識編寫了信號處理程序，對肌電信號進行了波形分析、幅值譜分析和功率譜分析，提取了信號特徵值，與相關資料的數據相比，基本一致；二是利用肌電信號的特徵值對肌電假手進行控制。 -
The impedance match must be extremely good because at the frequency that the antenna beam ~ vork on the broad - side position, the reflcctions from all the bends add in phase to produce a large input vswr. in addition, a poor design of thc bends leads to high - power breakdown
慢波線中使用了大量的波導e面180彎頭，系統對其駐波特性提出極高的要求，文中用高頻模擬軟體（ hfss ）優化設計了波導e面180彎頭。 -
Ti ? the input current that holds the input at the previous state when the driving device goes to the high - impedance state
當驅動器件轉至去高阻抗狀態時，保持輸入處于先前狀態的輸入電流。 -
High input impedance, powerful ability of anti - interference, wide range of phase - shift and less outward elements are advantages of the circuit. and it can be simply installed and debugged. in addition, it is reliable to put the circuit into practice
該觸發電路具有功耗小、功能強、輸入阻抗高抗干擾能力強移相范圍寬（ 0 177 ）外接元件少等優點，而且安裝調試簡單、使用可靠。
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