电路闭合

Whereas if the contacts are in series with the alternating circuit, due to the passing zero property of voltage, we must evaluate the condition of contacts according to voltage value.

但当触头接入交流电路中时，由于电压有过零的特征，所以要根据电压有效值来判断触头是打开还是闭合。

The discharge process of capacitive circuit is observed with IEC spark test apparatus,voltage,current and energy of spark discharge are referenced with numerical method.

参考了火花试验装置研究了电容性电路闭合放电过程，对电容火花放电的电压、电流和能量的变化规律进行分析。

When the switch is on, the circuit is closed and electricity goes through.

当开关开着的时候，电路是闭合的，就通电。

Once the circuit is closed, the light is on.

8· 电路一旦闭合，灯就亮。

And with virtual prototyping technology, dynamic behavior of the contactor can be gotten.

该文针对一种新型带反馈的智能接触器，提出了2组周期性相互转换的方程组，耦合了电路、电磁场和可动部分摩擦的影响，并采用虚拟样机技术，研究其闭合的动态过程。

When the reversing switch is on, the reversing portion reverses relationships of connection between the column electrode driving circuit and the column electrodes.

当该换向开关闭合时，换向部分使列电极驱动电路和列电极之间的连接关系换向。

When the reversing switch is on, the reversing portion reverses relationships of connection between the row electrode driving circuit and the row electrodes.

当换向开关闭合时，该换向部分使行电极驱动电路和列电极之间的连接关系换向。

In this thesis, soft starter equipment realized by thyristors power transform circuit is studied. To improve equipment performance, we apply variable reactance technique to AC motor soft starter study. The high voltage AC working winding of reactance is in series with motor winding, while low voltage control winding and thyristors groupware with intelligent controller constitute close loop circuit. We adopt thyristor phase control voltage-regulator mode to control low voltage winding, then control the reactance of high voltage winding, and then arrive at the goal-control the current and voltage of motor AC to realize motor soft starting.

本文研究由晶闸管功率变换电路实现的软起动器装置，为了提高装置的性能，将可变电抗技术应用于交流电机软起动研究中，电抗器的高压交流工作绕组与电动机绕组串接，低压控制绕组与带智能控制器的晶闸管组件组成闭合回路，采用晶闸管相控方式控制低压绕组，从而控制高压绕组的阻抗，以达到对电机电流与电压的控制，最终实现电机软起动的目的。

Then can weld starting the resistance directly on the rotor winding, and cancel collecting the electric ring and electric brush.

将定子一种极数的磁场感应于转子绕组中的电流，通过集电环和电刷，但由另一种极数的磁场感应的电流，却自动流经另一闭合回路，而不通过集电环和电刷：于是，如果后一种极数是电动机的工作基波磁场，而把前一种极数作为用以起动的谐波磁场，则可以把起动电阻直接焊接在转子绕组上，而把集电环和电刷取消，从而出现了转子电路上无集电环、无电刷、无触点的谐波起动绕线型感应电动机。

When the current goes through the bimetal component with impedance, if the current increases or the environment temperature rises and the temperature reaches the preset value, the bimetal component will work and release the contact to shut off the circuit; and by contrast, if the device cools down to the safe temperature, the contact point will reset automatically.

电流通过有阻抗的双金属元件，遇非正常工作时，随电流增大或周围温度升高至设定温度值时，双金属元件迅速动作，打开触点，切断电路。当装置冷却到安全工作温度时，触点自动闭合，恢复正常工作状态。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。