
可控硅;[电子] 硅可控整流器
A digital pulse generator for a silicon controlled rectifier and digital PID algorithm for some industrial process control are realized by the microcontroller.
实现了数字化可控硅变流器的脉冲控制及一般工业控制过程的PID数字算法。
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.
详细地介绍了可控硅整流器(SCR)线型触发器的改进型设计方案,提出了用于高脉冲重复频率的双极晶体管触发器的实用新电路。
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.
在设计制作过程中,采用外围时间芯片DS1302计时、数字温度传感器DS18B20采集温度,通过可控硅组成的开关电路驱动输出。
In this paper, a research on the air cooling of high-output silicon controlled rectifier is reported.
本文对大功率可控硅风冷散热器的传热过程进行了分析研究。
Exchange the silicon controlled rectifier to control, electromagnetic induction exports.
交流可控硅控制,电磁感应输出。
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.
本系统采用MCS-51系列8031单片机为基础结合外围器来实现对可控硅变流器的触发控制。
This paper focuses on the working principle of limiting current and over current protection method in a silicon controlled rectifier.
文中重点介绍可控硅整流装置中限流保护方案的工作原理。
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.
提出了三相可控硅相控调压拓扑结构的直流电源是较理想的适配于静电除尘器的电源。
The digital trigger to silicon controlled rectifier based on field programmable gate array (FPGA) has high accuracy and the ability of phase self-adjusting.
以现场可编程门阵列(FPGA)作为触发脉冲生成器,精确性高,并具有相序自适应性。
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.
由于采用可控硅无触点控制及行星齿轮减速,因而使用寿命长、传动效率高。本装置具有东西方向自动跟踪,电动遥控跟踪、手动跟踪、自动返回等多种功能。
The exciting system with static self parallel excitation consists of exciting transformer, exciting regulator, silicon controlled rectifier;
静止自并励励磁系统由励磁变压器、励磁调节器、可控硅整流装置、灭磁开关及转子过电压保护等组成。
A speed regulating system is proposed using method of energy consumption braking with silicon controlled rectifier as adjusting element.
提出的调速系统是用晶闸管作为调整元件的一种能耗制动调速系统。
It also describes the principle of silicon controlled rectifier in hardware.
在硬件上还扼要介绍了晶闸管的温控原理。
An intelligent digital trigger is designed for large power SCR(Silicon Controlled Rectifier)unit.
设计了一种新型大功率晶闸管整流装置智能数字触发控制器。
DC power supply cabinet: three-phase silicon-controlled rectifier (SCR), computer digital pulse triggers plate, flat-wave inductor, L, C filter, etc.
直流电源柜:三相可控硅整流桥(SCR)、计算机数字脉冲触发板、平波电感、L、C滤波器等组成。
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.
分析了国产可控硅整流器的应用现状,指出了其应用中的不足,提出了进一步提高应用水平的见解。
The Dongguan spring core electron Limited company manages silicon-controlled rectifier, field tube, two triodes, rectification bridge best-selling consumer market.
东莞泉芯电子有限公司经营的可控硅、场管、二三极管、整流桥畅销消费者市场。
Welding primary windings adopts two-way water-cooled silicon-controlled rectifier control, ensure that current output balance, and reliable.
焊接初级回路采用双向水冷可控硅控制,保证电流输出平衡,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.
这三个部分均采用可控硅进行控制,可控硅的触发采用KC05集成电路移相触发。
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.
主电路以反并联的晶闸管作为控制开关,控制焊接用的电阻点焊变压器通电与否。
The ferromagnetic resonance stabilized voltage supply and silicon-controlled rectifier are introduced briefly on early railway coach.
简述了铁路客车上早期应用的铁磁谐振稳压电源及可控硅整流元件稳压电源的使用情况及缺点。
We also specializing in the production of plant silicon-controlled rectifier, and special transformers, reactors and low-voltage switchgear.
我厂还专业生产可控硅整流器、特种变压器、电抗器和低压开关柜。
Simultaneously the micro controller outputs suitable control quantity to drive system implementing agency - digitization silicon-controlled rectifier control circuit.
同时微控制器输出的适当控制量驱动系统的执行机构——数字化可控硅控制电路。
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.
东莞泉芯电子有限公司经销的可控硅、场管、二三极管、整流桥品种齐全、价格合理。
The first electric field with current power and the second electric field with silicon-controlled-rectifier are suitable to prevent from corona blocking out.
运行实验表明,第一电场采用恒流源供电和第二电场采用控硅电压源供电的方案,可有效克服电晕封闭现象。
|Controlled silicon/thyrode;可控硅;[电子]硅可控整流器
硅控整流器(Silicon Controlled Rectifier,简称SCR)是一种四层三端半导体功率开关器件,属于晶闸管(Thyristor)家族中最基础且应用最广泛的成员。其核心功能是通过小信号控制大电流的通断,实现高效的电能转换与功率控制。以下是详细解释:
半导体结构
SCR由四层交替掺杂的半导体材料(P-N-P-N)构成,形成三个PN结(J1、J2、J3),引出阳极(A)、阴极(K)和门极(G)三个电极。当阳极-阴极间施加正向电压时,J1和J3结正向偏置,但J2结反向偏置,器件处于阻断状态;门极注入触发电流后,J2结失去阻挡能力,器件转为导通状态。
触发与维持导通
门极电流提供初始触发,引发内部载流子的"再生反馈"效应(类似雪崩效应),使SCR瞬间导通。一旦导通,门极信号即可移除,仅需阳极电流高于"维持电流"(IH)即可持续导通,直至电流中断或反向。
单向导电性
仅允许阳极到阴极的单方向电流通过,反向电压下呈高阻态(类似二极管整流特性),但可承受一定反向击穿电压(VRWM)。
半控型器件
通过门极控制导通,但无法直接控制关断。需依靠外部电路使阳极电流降至"擎住电流"(IL)以下或施加反向电压强制关断。
高功率处理能力
典型SCR可承受数千伏阻断电压和千安级导通电流(如1200V/3000A规格),适用于兆瓦级电力系统。
用于可控整流电路,如电机调速、电镀电源、直流输电等,通过调节触发角控制输出电压。
在调光器、加热器、软启动器中替代机械开关,实现无触点功率调节。
作为撬棒电路(Crowbar)的核心元件,在电压异常时瞬时导通保护后端设备。
尽管SCR具有整流功能,但其核心差异在于可控性:
权威参考来源
Silicon Controlled Rectifier (SCR),中文译为可控硅整流器或简称可控硅(晶闸管),是一种大功率半导体器件,主要用于电力控制和整流应用。以下是详细解释:
SCR通过门极信号控制导通,兼具整流与开关功能,是电力电子领域的核心元件。如需进一步了解其电路设计或具体型号参数,可参考专业电子工程资料。
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