結型二極體 的英文怎麼說
中文拼音 [jiēxíngèrjítǐ]
結型二極體
英文
junction diode-
In this book we also discuss nonlasing heterojunction diodes.
本書也討論了非激光型的異質結發光二極體。The researching results indicate the reverse recovery characteristics of the device are much improved : the reverse recovery time is remarkably shorted, the peak reverse current is notably reduced and the soft factor s is also increased in various degrees but not notable changed in forward drop when introducing the two kinds of novel structure
結果表明,採用新結構后,反向恢復特性大大改善,恢復時間明顯縮短,軟度因子s顯著提高,反向峰值電流也有不同程度的降低,其綜合性能遠遠高於si同類型結構及常規p ~ + ( sige ) - n ~ - - n ~ +二極體。Based on the structure and emission characteristic of the diode bar, a numerical calculation. model of the thermal dissipation was proposed and a related simulation of the effects of heatsinks parameters on the performance of the packaged laser was carried out
根據二極體條結構及輻射特性,建立了散熱過程數值計算模型,數值模擬研究了熱沉參數對封裝激光器性能的影響。Working on laser diode fiber - coupling modules was summed up, they are, setting up the model of far - field distribution of laser array and the far - field characteristics of difference structures ; designing the temperature - controlled laser diode fiber modules, that has been used as a laser system with temperature - controlled and fiber - output ; realization with high - brightness laser diode fiber - coupling modules ; the fiber ' s application in the field of high power laser
總結了自己在光纖耦合輸出激光二極體模塊方面所做的一些工作,建立了半導體激光器列陣遠場光束分佈模型,並結合具體參數分析了不同結構的激光器列陣的光束遠場分佈特性,可以知道我們設計和優化激光器列陣的結構。設計並製作了光纖耦合模塊的溫度控制系統,並製作成溫控光纖輸出激光器半導體系統投入使用。Ultraviolet absorption detector, photodiode array detector ( dad ), fluorescence detector, and electrochemical detector are optional detectors, response value of which is relative to not only quality of the object under test, but also structure of the compound ; refractive index detector and evaporative light - scattering detector are universal detector, responding to structure of all compounds ; evaporative light - scattering detector is quality - type detector, whose responding value only relates to quality of the object under test for compounds with similiar structures ; photodiode array detector ( dad ) can, at the same time, record absorption spectra of the object under test in a prescribed wave scope, consequently, it can be used in spectrum control and inspection of purity of chromatographic peaks of the object under test
紫外、二極體陣列、熒光、電化學檢測器為選擇性檢測器,其響應值不僅與待測物的質量有關,還與化合物的結構有關;示差折光檢測器和蒸發光散射檢測器為通用型檢測器,對所有的化合物結構均有響應;蒸發光散射檢測器屬質量型檢測器,對結構類似的化合物,其響應值幾乎僅與待測物的質量有關;二極體陣列檢測器可以同時記錄待測物在規定波長范圍內的吸收光譜,故可用於待測物的光譜管制和色譜峰純度的檢查。It has a broader absorption band at 808 nm which is emitted by laser diode ( ld ). therefore, nd : cngg is suitable for ld pumping, the ld pumped all solid - state lasers can be made by using nd : cngg. in this study, nd : cngg single crystals of 25mm in diameter and above 80mm in length were successfully grown by the automatically pulling method from the melt
摻釹鈣鈮鎵石榴石(簡稱nd : cngg )是一種新型激光晶體,該晶體熔點低( 1470 ) ,具有無序結構,在通用的808nm半導體激光二極體( ld )發射波長區有寬吸收帶,因此很適合ld泵浦,可做成ld泵浦全固態激光器。The fluctuation of ion beam has been controlled within 20 %, significantly lower than that of 50 - 80 % for external - magnetic field mid of annular configuration and ion diode without magnetic field by using polymer anodes
離子束密度的波動不超過20 ,顯著低於同類陽極的無磁絕緣和環型結構外磁絕緣離子二極體的50 - 80 。The new requirements for applications in material surface engineering urge a new type of hipib apparatus, for instance, the generation of medium - power - density ion beam, high - stability ion beams and long - lifetime ion source etc. therefore, characterization of high power ion diode - magnetically insulated ion diode ( mid ), the key issue for the technique development, is considered in this dissertation. the investigations of hipib generation and its mechanisms have been carried out in a temp - 6 hipib apparatus, in order to optimize the configuration of ion diode and its ion beam parameters for materials surface treatments
針對強流脈沖離子束( hipib )技術研發的關鍵環節?高功率離子二極體(磁絕緣離子二極體)的工作特性,在temp - 6型hipib裝置上開展了hipib產生及其形成機理的實驗研究,確定了優化的離子二極體結構和輻照工藝參數;通過hipib輻照金屬材料燒蝕行為的系統研究,揭示了燒蝕表面形貌的形成規律,為徹底弄清hipib與材料相互作用機理提供了實驗依據。The following is the main works and conclusions of this thesis. the novel upfc needs high power rate because it is generally used in high voltage transmission lines. after studied high - power converters and the literatures of upfc, the main circuit topology of novel upfc base on diode - clamping multilevel inverter is presented and the principle of using novel upfc to eliminate zero sequence and negative sequence currents is analyzed
本文所做的主要工作及得出的主要結論如下:由於upfc一般用於高壓輸電線,其功率等級要求很高,在綜合研究大功率變換器和upfc現有文獻的基礎上,提出了基於二極體箝位多電平變換器的新型upfc的主電路拓撲,分析了用其來濾出高壓輸電線非全相運行時所產生的零序和負序電流的原理。Finally, according to the mosfet ' s parameter degradation due to hot - carrier effects and different application environment of mos devices on analog and digital circuits, the circuit structures for hot - carrier immunity are proposed for digital applications by adding a schottky diode in series with the drain of the nmosfet suffered heavily from hot - carrier degradation.,
即在受熱載流子退化效應較嚴重的n mosfet漏極串聯一肖特基二極體的新型cmos數字電路結構和串聯一工作于線性區的常開n mosfet的mos模擬電路結構。經spice及電路可靠性模擬軟體bert2After introducing the background and the trend of research on ppv thin film light - emitting diodes ( leds ) and the structure of ppv device and its characterizes, the theoretical model of the leds * light - emitting efficiency was presented. based on this model, the formula of light - emitting efficiency was deduced to be : the injecting - currents and the recombining - efficiencies were calculated nwnerically, we found the calculated results agreed very well with the experimental results under the electric field from 0. 5 x 106 to 1. 5 x 106v / cm, the numeral calculations and theoretical analyzes of the light - emitting efficiency were done. the conclusions were as follows : ( 1 ) the basic mechanism of the injection transportation and recombination of the carriers which were presented in this paper were proved to be right ; ( 2 ) the electroluminescence in ppv thin film is the result of exciton recombination, the light - emitting efficiency was affected by many factors
本文主要研究聚對苯乙炔( ppv )薄膜發光二極體發光效率及主要影響因素,簡單地介紹了ppv薄膜發光二極體的研究背景及發展趨勢、 ppv器件的結構和性質后,提出了一個計算器件發光效率理論模型,利用這個理論模型得出了發光效率公式的表達式:並對注入電流、復合效率等進行了數值計算,通過合理地選擇計算參數,發現計算值在場強為0 . 5 10 ~ 6 1 . 5 10 ~ 6v / cm的范圍內與實驗結果較好地符合,在此基礎上,對發光效率進行了數值計算和理論分析,結果表明:計算結果與理論研究結果相符較好,得出結論如下: ( 1 )本文的理論推導正確地反映了器件中載流子的注入、傳輸和復合等基本機制; ( 2 ) ppv薄膜中的電致發光是激子復合的結果,發光效率受多種因素影響。On the base of the study on sige material physics characteristic, sige / si hetero - junction characteristic, we dissertate the advantage of sige / si hetero - junction power diodes and establish more accurately physical models and propose two novel kinds of fast and soft recovery p + ( sige ) - n - - n + hetero - junction power diodes : the one is p + ( sige ) - n " - n + diode with the multiplayer gradual changing doping concentration in the n - region, and the other is p + ( sige ) - n " - n + diode with ideal ohmic contact on the cathode interface
本文針對sige材料的物理特性、 sige si異質結特性建立了準確的物理參數模型。在詳細論述了sige si異質結功率二極體良好特性的基礎上,提出了兩種快速軟恢復sige si功率二極體新結構: n ~ -區採用多層漸變摻雜和陰極側採用理想歐姆接觸。This converter not only retains the advantages of ttfc but also has only two camping diodes. moreover the proposed converter operates at nearly unity duty - ratio for very high efficiency and eliminates the voltage overshoot of the output rectifying diodes
本文提出了一種新型直直變壓器拓撲,該拓撲不僅保留了雙管正激變換器的優點,而且在原邊僅含兩個續流二極體,電路結構簡單。New structure of two - area cathodes gunn diodes
新型雙區陰極結構體效應二極體On the base of the study on si / sige hetero - junction fast switching power diode, two kinds of novel structure of sige / si pin diode are proposed in abstract this paper. the one is the gradual changing doping concentration in the n - region, and the other is sige pin diode with mesa structure
本文在對sige si異質結快速開關功率二極體的研究基礎上,提出了兩種sige si快速開關功率二極體的新結構: ?基區漸變摻雜型sige異質結開關功率二極體和臺面結構sige異質結開關功率二極體。Diode pumped solid - state laser ( dpssl ) is a kind of long - life, stable, compact, efficient all - solid laser. it has considerably replaced the other type of lasers
二極體泵浦固體激光器具有光束質量好、壽命長、工作穩定、結構緊湊、效率高等優點,已經在很大程度上替代了其它類型的激光器。The 1w leds is a device that can be reflow soldered for automated production assembly. it features moksan ' s unique electrically neutral thermal path and contains no lead or mercury
1w的發光二極體能應用於自動化生產中的迴流焊。這是木山公司產品的典型特徵,具有優越的散熱結構,不含鉛和汞。Some protection strategies are proposed to prevent the vsc - hvdc from over - voltage and over - current damage in most fault conditions. digital simulation is done to verify the validity of the proposed protection strategy. ( 3 ) a control strategy for a diode clamped three - level vsc - hvdc system is proposed and is testified by digital simulation using netomac
( 3 )在比較和研究適用於vsc - hvdc容量提升的一些策略的基礎上,論證了目前提升vsc - hvdc容量的一個現實途徑是採用三電平vsc ,並提出了基於二極體中點箝位型三電平vsc的hvdc系統的一種控制策略,設計了相應的控制器,模擬結果證實所設計的控制器具有良好的穩定性和穩態控制精度。In part ii a novel designed electronic tongue is developed, which is a multiopto - sensoriccard * based optical ditch system for online liquid detection. compared with traditional e - tongue, the sensing mechanism of our system is based on spectrum analysis technique. three actual measuremental results presented in the thesis demonstrate the validity and advantage of this system
本文將光電子技術和光譜分析技術相結合,區別于已有電子舌系統中,利用化學反應實現液體檢測的研製思路,提出了一種利用光譜分析技術的電子舌研製思想,研製了基於集成led和光電二極體陣列的雙光路凹型光耦合電子舌系統,所研製的系統具有小體積、低功耗、低成本的特點。The analyzing model was established, and a novel inner - cladding structure of dcf with higher performance was designed. integrated by the absorption and emission characteristics of rare - earth - ions in dcf and the ld ' s pumping principle with its relative references, the - academic model of high power dcf laser with f - p cavity was based, by using methods of numerical analysis, the high power dcf laser was simulation with good results and consistency
結合稀土離子的吸收及發射特性及二極體泵浦固體激光原理,應用相關的理論建立了高功率f - p腔型光纖激光器的理論分析模型,利用matlab 、 mathcad , origin等軟體,採用數值計算及分析方法,結合具體參量數值對實驗進行了模擬分析,並研究了不同特性參量對激光器性能的影響。分享友人