
可控矽;[電子] 矽可控整流器
A digital pulse generator for a silicon controlled rectifier and digital PID algorithm for some industrial process control are realized by the microcontroller.
實現了數字化可控矽變流器的脈沖控制及一般工業控制過程的PID數字算法。
An improved plan of silicon controlled rectifier(SCR)line type trigger is described in detail. Anew practical circuit of bipolar transistor trigger for high pulse repeat frequency is presented.
詳細地介紹了可控矽整流器(SCR)線型觸發器的改進型設計方案,提出了用于高脈沖重複頻率的雙極晶體管觸發器的實用新電路。
During the designing Chip using DS1302 times; digital temperature sensor DS18B20 picks temperature to adopt pedpharal time; the silicon controlled rectifier is used for switching ddve and export.
在設計制作過程中,采用外圍時間芯片DS1302計時、數字溫度傳感器DS18B20采集溫度,通過可控矽組成的開關電路驅動輸出。
In this paper, a research on the air cooling of high-output silicon controlled rectifier is reported.
本文對大功率可控矽風冷散熱器的傳熱過程進行了分析研究。
Exchange the silicon controlled rectifier to control, electromagnetic induction exports.
交流可控矽控制,電磁感應輸出。
The system discussed in this paper is to control the triggering of silicon controlled rectifier, based on chip microprocessor 8031 of series MCS51, together with some exterior devices.
本系統采用MCS-51系列8031單片機為基礎結合外圍器來實現對可控矽變流器的觸發控制。
This paper focuses on the working principle of limiting current and over current protection method in a silicon controlled rectifier.
文中重點介紹可控矽整流裝置中限流保護方案的工作原理。
The Three-phase Silicon Controlled Rectifier is perfect power supply for ESP. To provide field-testing result, it is better on collection efficiency. The SCR is powerful.
提出了三相可控矽相控調壓拓撲結構的直流電源是較理想的適配于靜電除塵器的電源。
The digital trigger to silicon controlled rectifier based on field programmable gate array (FPGA) has high accuracy and the ability of phase self-adjusting.
以現場可編程門陣列(FPGA)作為觸發脈沖生成器,精确性高,并具有相序自適應性。
With the use of the silicon controlled rectifier and speed reduction by planet gears, the installation is expected to have long service life and high transmission efficiency.
由于采用可控矽無觸點控制及行星齒輪減速,因而使用壽命長、傳動效率高。本裝置具有東西方向自動跟蹤,電動遙控跟蹤、手動跟蹤、自動返回等多種功能。
The exciting system with static self parallel excitation consists of exciting transformer, exciting regulator, silicon controlled rectifier;
靜止自并勵勵磁系統由勵磁變壓器、勵磁調節器、可控矽整流裝置、滅磁開關及轉子過電壓保護等組成。
A speed regulating system is proposed using method of energy consumption braking with silicon controlled rectifier as adjusting element.
提出的調速系統是用晶閘管作為調整元件的一種能耗制動調速系統。
It also describes the principle of silicon controlled rectifier in hardware.
在硬件上還扼要介紹了晶閘管的溫控原理。
An intelligent digital trigger is designed for large power SCR(Silicon Controlled Rectifier)unit.
設計了一種新型大功率晶閘管整流裝置智能數字觸發控制器。
DC power supply cabinet: three-phase silicon-controlled rectifier (SCR), computer digital pulse triggers plate, flat-wave inductor, L, C filter, etc.
直流電源櫃:三相可控矽整流橋(SCR)、計算機數字脈沖觸發闆、平波電感、L、C濾波器等組成。
The application status of domestic silicon-controlled rectifier was analyzed and deficiency in its application was pointed, the view is proposed to further enhance the application level.
分析了國産可控矽整流器的應用現狀,指出了其應用中的不足,提出了進一步提高應用水平的見解。
The Dongguan spring core electron Limited company manages silicon-controlled rectifier, field tube, two triodes, rectification bridge best-selling consumer market.
東莞泉芯電子有限公司經營的可控矽、場管、二三極管、整流橋暢銷消費者市場。
Welding primary windings adopts two-way water-cooled silicon-controlled rectifier control, ensure that current output balance, and reliable.
焊接初級回路采用雙向水冷可控矽控制,保證電流輸出平衡,可靠。
These three parts use the silicon-controlled rectifier to carry on the control, the trigger of silicon-controlled rectifier adopt phase-shifting trigger of KC05 integrated circuit.
這三個部分均采用可控矽進行控制,可控矽的觸發采用KC05集成電路移相觸發。
In the main circuit, the inverse parallel couple SCRs(silicon-controlled rectifier) are used as a electric switch, switching the transformer of resistance spot welding.
主電路以反并聯的晶閘管作為控制開關,控制焊接用的電阻點焊變壓器通電與否。
The ferromagnetic resonance stabilized voltage supply and silicon-controlled rectifier are introduced briefly on early railway coach.
簡述了鐵路客車上早期應用的鐵磁諧振穩壓電源及可控矽整流元件穩壓電源的使用情況及缺點。
We also specializing in the production of plant silicon-controlled rectifier, and special transformers, reactors and low-voltage switchgear.
我廠還專業生産可控矽整流器、特種變壓器、電抗器和低壓開關櫃。
Simultaneously the micro controller outputs suitable control quantity to drive system implementing agency - digitization silicon-controlled rectifier control circuit.
同時微控制器輸出的適當控制量驅動系統的執行機構——數字化可控矽控制電路。
The Dongguan spring core electron Limited company sells on commission silicon-controlled rectifier, field tube, two triodes, rectification bridge great variety of goods, reasonable price.
東莞泉芯電子有限公司經銷的可控矽、場管、二三極管、整流橋品種齊全、價格合理。
The first electric field with current power and the second electric field with silicon-controlled-rectifier are suitable to prevent from corona blocking out.
運行實驗表明,第一電場采用恒流源供電和第二電場采用控矽電壓源供電的方案,可有效克服電暈封閉現象。
|Controlled silicon/thyrode;可控矽;[電子]矽可控整流器
矽控整流器(Silicon Controlled Rectifier,簡稱SCR)是一種四層三端半導體功率開關器件,屬于晶閘管(Thyristor)家族中最基礎且應用最廣泛的成員。其核心功能是通過小信號控制大電流的通斷,實現高效的電能轉換與功率控制。以下是詳細解釋:
半導體結構
SCR由四層交替摻雜的半導體材料(P-N-P-N)構成,形成三個PN結(J1、J2、J3),引出陽極(A)、陰極(K)和門極(G)三個電極。當陽極-陰極間施加正向電壓時,J1和J3結正向偏置,但J2結反向偏置,器件處于阻斷狀态;門極注入觸發電流後,J2結失去阻擋能力,器件轉為導通狀态。
觸發與維持導通
門極電流提供初始觸發,引發内部載流子的"再生反饋"效應(類似雪崩效應),使SCR瞬間導通。一旦導通,門極信號即可移除,僅需陽極電流高于"維持電流"(IH)即可持續導通,直至電流中斷或反向。
單向導電性
僅允許陽極到陰極的單方向電流通過,反向電壓下呈高阻态(類似二極管整流特性),但可承受一定反向擊穿電壓(VRWM)。
半控型器件
通過門極控制導通,但無法直接控制關斷。需依靠外部電路使陽極電流降至"擎住電流"(IL)以下或施加反向電壓強制關斷。
高功率處理能力
典型SCR可承受數千伏阻斷電壓和千安級導通電流(如1200V/3000A規格),適用于兆瓦級電力系統。
用于可控整流電路,如電機調速、電鍍電源、直流輸電等,通過調節觸發角控制輸出電壓。
在調光器、加熱器、軟啟動器中替代機械開關,實現無觸點功率調節。
作為撬棒電路(Crowbar)的核心元件,在電壓異常時瞬時導通保護後端設備。
盡管SCR具有整流功能,但其核心差異在于可控性:
權威參考來源
Silicon Controlled Rectifier (SCR),中文譯為可控矽整流器或簡稱可控矽(晶閘管),是一種大功率半導體器件,主要用于電力控制和整流應用。以下是詳細解釋:
SCR通過門極信號控制導通,兼具整流與開關功能,是電力電子領域的核心元件。如需進一步了解其電路設計或具體型號參數,可參考專業電子工程資料。
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