触发电压

Then the breakdown mechanism was introduced to explain the results.It is found that the optimum polarity combination is heteropolarity and the best scope of the ratio between trigger voltage and self-breakdown voltage is 30%~50%.

实验结果表明：新型触发管开关获得最佳触发特性所需的极性组合应为异极性组合，触发电压幅值范围为自击穿电压的30%~50%，为兼顾触发电流和保护触发器，触发电阻值应为50~100 Ω，验证了触发管开关击穿机制的已有认识。

The article researched new type thyristor trigger that adapts the frequency of input power automatically, then analyzed the designing ways and process of frequency-tracked trigger in detail, yet validated capability of trigger through experiment and actual appliance in project, we also build up the fault-diagnosed and disposal cell of hypogyny machine with SIMATIC S7-200 PLC, besides, programmed and debugged to realize various monitor and diagnose; more, smart design make protection function more perfect and action more sensitive, so it can realize perfect swift and reliable protection under fault condition.

本文重点研究了以频压变换技术为核心的新型频率跟踪触发器，详细分析了频率跟踪触发器的设计思路和设计过程，实现了在同一移相控制电压下，当同步电压频率大范围变化时触发器输出触发脉冲的电角度保持不变的目的，满足了项目对同步电压频率变化时晶闸管准确触发的要求；并通过实验和工程实际应用验证了触发器的性能。设计了基于SIMATIC S7-200 PLC软硬件的故障诊断系统并调试了各项监控、诊断功能；实现故障条件下准确、迅速及可靠的保护。

Based on this circuit, a series of trigger circuits were generated and excellent trigger effects were achieved.

摘要］该文介绍了晶闸管投切电容器的原理和快速过零触发要求，分析了两类晶闸管的触发电路的特点和存在的问题，指出了一种新型的从主回路晶闸管获取晶闸管电压过零信号的电路框图，以该电路支撑产生一系列触发电路，取得了优秀的触发效果。

Both MOSFETs embedded DDSCRs have tunable triggering voltage,low DC leakage,and fast turn on speed snapback I-V characteristics without latch-up problem.

其中采用嵌入pMOS管或nMOS管的双向SCR器件结构具有可调触发电压，低漏电流和开启速度快的骤回I-V特性，并且没有闩锁问题。

A new trigatron with a discal trigger electrode has been tested on its trigger characteristics.And the effects of different polarity combinations,trigger pulse amplitudes and trigger resistances on trigger characteristics of the trigatron have been derived.

对采用盘状触发电极的新型触发管开关的触发特性进行了实验研究，得到不同极性组合、不同触发电压幅值和不同触发电流条件下开关的触发特性实验结果。

The steady state and dynam ic characteristics of ASVG are analyzed with the help of this model.

通过对仿真结果的分析，得出了 ASVG的输出电压与它和系统接入点电压间的相角差、ASVG晶闸管触发脉冲、触发脉宽之间的关系，这为ASVG的触发脉冲和触发脉宽的设计提供了依据。

Compared with the traditional medium-voltage-trigger thyristor, the new structure not only has a lower trigger voltage, but can also provide better ESD protection under both positive and negative ESD zapping conditions.

相比于传统的中等电压触发晶闸管，这一新结构不仅具有更低的触发电压，而且在正向和反向两种静电测试下均具有更好的静电保护能力。

Building time and jitter of the Marx generator are mainly depend on work state of spark gap switch during operating. Meanwhile they are related to amplitude and polarity of trigging voltage.

Marx发生器建立时间及抖动与Marx发生器中球隙开关的工作状态有关，同时与开关的触发电压幅值及极性有关。

On the basis of the existing sieving method of sieving thyratrons, serving the typical fuze detonating circuit as the circuit of sieving thyratrons, and applying the operation conditions of the typical fuze detonating circuit in the sieving circuit, we can measure more accurately the turn on voltage, trigger voltage, turn on time, and leak of electricity of the thyratrons.

在现有闸流管检测方法的基础上，将实际的引信起爆电路作为闸流管的检测电路，将起爆电路的工作条件施加于检验电路，可以更准确地给出闸流管的导通电压、触发电压，同时测量出闸流管的导通时间以及闸流管在关断状态下的漏电流。

Its working principle is introduced here: when a gas or powder starts a flame or explosion, the ultraviolet sensor will acquire the signal and sent it to the controller to produce the trigger voltage, and then the explosive suppressor will release a great number of gas promptly spraying dry powder extinguishing agents, which thereby form extinguishing agent smoke and effectively extinguish explosion flame. It is rapid and of strong antiinterference ability, high reliability and can be fixed easily. It is capable of effectively suppressing natural gas explosion in the simulative gas explosion test. It can be applied in CNG stations or other site where has explosive and combustible gas whereby to enhance the overall accident control ability.

当发生气体燃烧、爆炸时，紫外传感器接收火焰信号，传送至控制器，控制器产生触发电压，使抑爆器的产气剂释放出大量气体，驱动快速喷撒出干粉灭火剂，形成足够浓度的灭火剂粉雾体，有效扑灭爆炸火焰，具有动作速度快、抗干扰能力强、可靠性高、安装使用方便等优点，在天然气模拟爆炸试验中能有效抑制天然气爆炸，可用于CNG加气站或其他燃烧爆炸性气体场所，提高其整体防灾抗灾能力。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。