The hardware circuit is simple, and it has strong reliance and anti-interference ability, which is a kind of ideal SCR trigger.
硬件电路简单，可靠性高，抗干扰能力强，是一种比较理想的晶闸管触发装置。
In this background, with the application of CPLD in V-M System, a digital SCR trigger circuit with phase shifting is developed which is absolutely different from the former ones.
在此背景下，本次设计将CPLD引入到V-M系统中，开发出与以往脉冲产生方式相区别的数字式移相触发电路。
The principle is that the system adjustment signals are changed into shift-pulses via a timer so as to trigger SCR for three-phases full-controlrectification.
共原理为将系统调节信号经定时器转换为移相脉冲串去触发可控硅进行三相全控整流。
The circuit of controlling data acquisition and the trigger circuit of SCR are described in detail.
详细阐述了控制的数据采集和可控硅触发电路。
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。
When the voltage applied to anode again becomes positive the gate will trigger the SCR on again.
当施加到阳极的电压再次变为正的栅极将再次触发可控硅上。
When it reaches the trigger point (assume 5 milliamperes for this SCR), the SCR fires and conducts through the anode-cathode section.
当达到触发点(假定为5毫安这个SCR)，可控硅触发，并进行通过阳极-阴极部分。
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。
It is perfect phase trigger circuit for arc welding power source of SCR.
该相控触发电路是晶闸管整流弧焊电源的理想触发电路。
Zero-crossing trigger of SCR is a common problem in the practical application of SCR, especially in three-phrase systems.
在可控硅的实际应用中，经常会遇到可控硅过零触发问题，尤其在三相系统中，这种应用更为常见。
The present invention has low trigger voltage of SCR, can adjust freely in corresponding range and has hyperpyrexia breakdown current.
本发明的可控硅触发电压低，能在相应范围内自由调整且具有高热击穿电流。
One is power failure, mainly on AC phase-loss consisting of SCR failure, the failure of SCR's trigger circuit , there phases AC switches'failure and the failure of CRDM coil;
对于控制装置故障，主要表现为电源缺相，而导致电源缺相的子事件主要有：可控硅失效、可控硅触发电路失效、三相电源开关失效、电感线圈失效；
The common algorithm of SCR digital trigger, however, was not satisfying on response time, change rate of firing Angle and stability.
一般的晶闸管数字触发器算法存在着响应时间长、触发角不可大幅变化和可靠性差等不足。
SCR is triggered and external characteristic is tested. The testing results show that the trigger generator is highly integrated and its work is reliable.
采用该触发脉冲发生器对晶闸管弧焊整流器的晶闸管进行了触发并测试了该整流器的静特性。
SCR is triggered and external characteristic is tested. The testing results show that the trigger generator is highly integrated and its work is reliable.
采用该触发脉冲发生器对晶闸管弧焊整流器的晶闸管进行了触发并测试了该整流器的静特性。
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