触发电压

A bipolar pulse gener AT or with A valanche Transistor is introduced which uses two paralleled tubes to enhance the amplitude of the output pulse. Meanwhile the power supply voltage can be adjusted, so better synchronous triggering can be performed.

介绍了一种双极性雪崩三极管脉冲产生器电路；电路采用双管并联以增大输出脉冲的幅度，并采用调节电源电压的方法来达到良好的同步触发。

That is to say, during the starting process of induction motor, hold-off angle of current has gradually decreased from initial value to zero. The method can always make the displacement angle less than thyristor's firing angle. So the voltage of the induction motor won't oscillate. Therefore, the oscillation of current, electromagnetic and speed can be eliminated during the soft-starting process of induction motor. This paper verifies the correctness of the method by simulation at first.

根据上述原因，本文提出了采用关断角控制的新型控制策略，这种控制策略是使电动机在起动过程中的电流关断角由某一初始值逐渐减小到零，利用该方法可以使感应电动机起动过程中的续流角始终小于晶闸管的触发角，这样续流角的变化就不会引起电动机端电压的振荡，因而就从根本上消除了感应电动机软起动过程中的振荡现象。

In 'Phase angle' mode, the power transmitted to the load is controlled by firing the thyristors on a part of the supply

在移相触发模式中，负载的功率控制是靠晶闸管的提供的交流电压的部

Thus it can deal with not only practical input and output performance, but also the practical firing logic and the changing of voltages and currents of thyristors.

该模型计及了六脉冲交交变频器的实际物理结构及运行过程，不仅可以反映输入输出性能的实际情况，而且可以得到内部各晶闸管的实际触发逻辑和电压、电流的变化规律。

We did simulation iv siltstone and limestone with these two apparatus.

爆炸丝线路、样品室几何形状、触发开关、金属丝参数及充电电压是影响金属丝在岩石介质中的爆炸能量和玻璃体生成量的重要因素。

A high voltage, high current relay driver IC is used to trigger the relays, thus allowing for a selectable active high or active low independent trigger source for each of the two relays.

高电压，高电流继电器驱动IC是用来触发继电器的，从而允许用于每两个继电器的，一个可选择的高态有效或低态有效独立触发源。

Control unit circles line electric machinery through the change of a group of silicon controlled rectifier with shunt-wound back of photograph of every photograph dream spark the stator voltage that angle will come to to change electric machinery.

控制单元通过改变绕线电机每相梦相背并联的一组可控硅的触发角度来改变电机的定子电压。

Control unit circles line electric machinery through the change every photograph carries a group of shunt-wound to the back silicon controlled rectifier on the back spark the stator voltage that angle will come to change electric machinery.

控制单元通过改变绕线电机每相背对背并联的一组可控硅的触发角度来改变电机的定子电压。

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。