high frequency capacitance 中文意思是什麼

high frequency capacitance 解釋
高頻電容
  • high : adj 1 高的〈指物，形容人的身高用 tall〉；高處的；高地的。2 高級的，高等的，高位的，重要的。3 高尚...
  • frequency : n. 1. 屢次，頻仍，頻繁。2. （脈搏等的）次數，出現率；頻度；【物理學】頻率，周率。
  • capacitance : n. 【電學】電容；電容器。
  1. Any subtle change of capacitance can be measured through the method of modulation on high - frequency harmonic oscillation return circuit

    電容的微小變化可通過對高頻諧振迴路調制的方法進行測量。
  2. A common data acquisition card can be used on laboratory virtual instrument engineering workbench through designing the external interface between labview and common date acquisition card on the software design ; used the idea of the double buffer and direct memory access, a real time data acquisition and logging about the succession, big capacitance leakage current is realized ; a digital filter is designed to filter high frequency signals

    在軟體設計上，設計了與普通數據採集卡的介面，實現了在labview環境中應用普通數據採集卡的功能；運用雙緩沖和內存直接映射的設計方法實現對連續、大容量泄漏電流信號的實時採集和存儲；設計了數字濾波器對採集后的原始數據濾去高頻干擾。
  3. With the development of electronic technology in the field of high - frequency and high - power, power mosfet is gradually enhancing its important status in semiconductor apparatus and is being widely applied in power converters as switch. with the increasing of the operating frequency ( > 200khz ), the energy loss caused by parasitic capacitance will affect the efficiency of power transforming in converters. especially in the applications of high frequency power supply using mosfet as main devices ( the unit of frequency is mhz ), the energy loss caused by the switch process will badly affect its efficiency

    隨著電力電子技術進一步向高頻的大功率用電領域發展，功率mosfet在各種電力半導體器件中的重要地位日益顯著，使用功率mosfet作為開關器件的功率轉換電路也日益增多，但隨著器件開關頻率的提高（大於200khz ） ，由器件極間電容引起的能量損耗將會影響到功率轉換電路的能量傳輸效率，特別是在以mosfet作為開關器件的高頻感應加熱電源中（工作頻率可達兆赫） ， mosfet在開關過程中的能量損耗嚴重影響到電源的效率，因此如何減小開關器件的損耗提高高頻功率轉換線路的效率成為電力電子技術領域的重要研究課題之一。
  4. We can obtain the trap density by measuring the change of gate voltage of mos capacitance under constant current stress and the change of high frequency c - v curve before and after the stress

    該方法根據電荷陷落的動態平衡方程，測量恆流應力下mos電容的柵電壓變化曲線和應力前後的高頻cn曲線變化求解陷階密度。
  5. High - capacitance enables reduction of noise over a wide frequency range

    高電容的特性所以適用於寬范圍的雜訊消除
  6. In this circuit, we use many kinds of negative feedback to modify the ou tput wave, which can decrease the distortion. and we use the high - voltage and high frequency capacitance efficiency, which can decrease the disturbance of output signal of variable frequency source for the test of part discharge

    採用了多種負反饋迴路修正輸出波形，使得輸出電壓波形的失真度很小；並且在電路中有效利用高壓高頻電容，減小了變頻電源輸出的電壓對局部放電試驗時的干擾。
  7. So it is an important research in the field of the electronic technology to reduce the loss caused by the switching device and to improve the efficiency of high frequency power converters. this paper primarily focuses on the optimization of the mosfet parasitic capacitance so as to reduce the switching loss and improve the efficiency of power transforming in converters using mosfet as switch

    通過分析mosfet器件的開關特性，根據輸出電容c _ （ oss ）給器件引進的動態損耗來確定優化器件輸出電容西安理工大學碩士學位論文l變化曲線的目標函數，運用可行方向法求解帶約束條件的最優值，確定出優化的輸出電容人變化曲線。
  8. High stability of capacitance and dfversus wide temperature and frequency range

    高溫度，頻率范圍內容量df具高穩定性。
  9. Key components in the insulation line : high precision extrusion crosshead with automatic centring produced by swiss unitek, o. d. meter, centrifugal tester, h. f. spark tester, capacitance tester provided by uk beta co., frequency converter, temperature controller, plc and bearing from simens in germany and mitsubishi injapan

    生產線選用的主要關鍵器件：擠出機頭採用瑞士unitek公司的高精度自動定心機頭；外徑測試、偏心測定、高頻火花、電容測試等均採用英國beta公司的高精度儀器；而且擠出機的變頻器、溫控器、 plc和軸承等均採用德國西門子公司和日本三菱公司的產品。
  10. ( 3 ) in order to be suitable for the secrecy of control system, convenient for debugging the control system and make the control system be applied to capacitance, inductance and phase - shifting controlled ozonier, the control system of the ozonier power is based on cpld / fpga chip is presented. ( 4 ) the paper analyzes the shortage of routine inductor designing methods which are used to design intermediate frequency, high voltage resonance reactor, puts forth an iterative method to prevent the problem

    （ 3 ）為解決大功率諧振電抗器的設計困難一直是大功率諧振電源的難點，本文在電抗器常用的ap設計法的基礎上，提出了一種迭代設計方法，這種方法同時考慮氣隙長度范圍和氣隙磁通邊緣效應因數，根據所需電感值來求解滿足要求的鐵芯規格和線圈匝數，不必對電感器的匝數進行修正。
  11. The recursive criterion of transient current protection based on mallat wavelet transform is presented in order to meet the real - time demands. the reserch shows deficiency existed in the prevenient principle of transient current protection, so a new improved scheme of transient current protection is proposed. the characteristics of transient protection at different bus distribution capacitance is also analysed in this thesis. the study shows that operate of transient protection is correct when the bus distribution capacitance change. other conclusion include : the trip of transient protection must be locked when the power circuit breaker of transimission line operated, because the trip is incorrect at this time ; the features of transient current and it ' s energy is different between the fault and thunder over - voltage in transimission line, and them can be identified ; the ratio of high frequency component of current in serise capaciters compensation line, svc and hvdc system is far little than fault transient current, so all of them do not affect the working of trasient current protection

    應用功率譜估計方法討論了故障高頻暫態噪聲信號在頻率軸上的分佈情況，利用功率譜分析結果實現的非參數化系統辨識方法研究了母線分佈電容對電流高頻暫態信號的衰減特性。論文的後半部分（第五，六，七章）著重分析了現有基於故障電流的暫態保護原理和判據存在的問題，提出了新的實現方案，並討論了暫態電流保護的運行性能。利用多分辨分析和小波分解快速演算法構成的遞推暫態保護判據，可以準確區分故障線路和非故障線路，實現超高速暫態電流保護，計算更為簡單方便，計算速度更快。
  12. 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。
  13. The high frequency matching network mainly used lumped element lowpass network, including the series capacitance, series inductance and shunt grounded capacitance

    高頻匹配網路主要採取集中參數低通形式，串聯部分電感、電容參加匹配，並聯部分對地電容參加匹配。
  14. A half - bridge bi - directional current mode high frequency inverter was proposed, and the problem of unequal voltage of capacitance in this circuit can be resolved by adding a balance coil

    提出了半橋雙向電流源高頻鏈逆變器的拓撲結構，並對電路固有的電容電壓不平衡問題提出了解決方法，採用平衡繞組可以徹底解決電容電壓不平衡。
  15. Our national capacitance metrology level in the low frequency range ( below 10 khz ) has reached the international advanced level. but with the development of science and technology, there exists a big difference between our national and international advanced level in the aspect of the frequency range and the capacitance range etc, especially in the aspect of the frequency range. so the capacitance metrology technology in high frequency cannot meet the need of testing for impedance metrology standards and the measurement instruments

    在低頻段（ 10khz以下） ，我國電容計量水平已達到國際先進，但隨著科技的發展，在頻率范圍、量值范圍等方面與國際先進水平有較大的差距，特別是在頻率范圍方面，不能滿足進口阻抗計量標準器及其測量儀器的檢定測試要求，迫切需要在頻率范圍上進行擴展。
  16. In this paper, a mixed method with the combination of advantages of analog and digital is discussed. it consists of two parts, analog and digital. first capacitance is converted to frequency by analog part, which makes the relations between capacitance and frequency, then high accuracy and instantaneous frequency measurement is accomplished by digital part based on the multiple period synchronization method

    隨著數字電路的成熟，也有數字方法。本文結合模擬和數字方法兩者的優點，採用模/數混合方法。該方法由模擬和數字電路兩部分組成，首先由模擬電路建立電容到頻率的函數對應關系;然後由數字電路對頻率計數。
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