开关装置

The circuit of this device is formed the source, pressed frequently by the pulse changer, photosensitive resister and power switch three parts make up.

该装置的电路由脉冲形成源、压频变换器和光耦与功率开关三部分组成。

The primary energy source is powered by a commercial three-phase AC power supply, rectified by semiconductor devices, and resonantly charges the Tesla transformer controlled by solid switches and relays.

它的初级能源由商用三相电源供能，利用硅堆整流，并通过固体开关及继电器等装置控制来实现对Tesla变压器初级线圈的重复谐振充电。

The diagnosis of the winding current and the change rate of magntic flux on the magnetic core provides necessary value for determining the hysteresis cycle,saturated magnetic flux intensity and retentiveness of magntic core. Principle of this diagnosis and method of dynamic parameters on magnetic core are discussed.

讨论了基于高电压放电和脉冲压缩方法测量磁芯动态参数的原理，给出了测试装置的电路原理和电路元件参数的选择方法，测量了大型磁开关磁芯快脉冲条件下的电参数，计算了相关的磁参数，给出了实验结果。

The method utilizes an optical device which consists of polarization control elements and polarization beam splitting pieces for realizing the multi-switching of polarization or non-polarization light; in a position sequence, one polarization beam splitting piece is arranged on a main optical path at the back surface of each polarization control element, thereby commonly constituting a 'single-pole double-throw' optical switch with a controller; the controller changes the polarization state of input light beams by driving the polarization control elements according to the control logic, and the input light beams are switched to any one path on an output channel through the polarization beam splitting pieces, thereby completing the designated optical information processing function.

利用偏振控制元件和偏振分束片两种光学元件组成的光学装置实现偏振或非偏振光的多路切换；在位置序列上，每个偏振控制元件后面主光路上放置一块偏振分束片，并和控制器共同构成一个'单刀双掷'光开关；控制器按照控制逻辑驱动偏振控制元件改变输入光束的偏振态，并通过偏振分束片将输入光束切换到输出通道上的任何一路，来完成指定的光信息处理功能。

The paper presents the technical status mine explosion-proof electrical apparatus of mine flame-proof type vacuum feed switch,mine flame-proof type with intrinsically safe vacuum electromagnetic stater,mine flame-proof type high voltage vacuum distribution device and mine flame-proof type movable transfermer substation,And it analyzes from parameters,electrical system and the structure.

简要介绍了矿用隔爆型真空馈电开关、矿用隔爆兼本质安全型真空电磁起动器、矿用隔爆型高压真空配电装置、矿用隔爆型移动变电站等主要煤矿防爆电器的技术现状，并从参数、电气系统及结构等方面进行了初步的分析。

The device by the sensor, pressure switch and control box of the three basic components.

该装置由传感器、压力开关和控制箱三个基本组件构成。

Professional for the production of complete sets of equipment of low pressure switch device factory and industrial plant equipment to provide quality products and technical services.

专业为生产中、低压成套设备装置的开关板厂及工业设备配套厂提供优质产品和技术服务。

The dual-direction stretching wire switch is a protection device to stop adhesive tape transportation machine in case of emergency.

双向拉绳开关是用于胶带运输机现场紧急事故停机的一种保护装置。

Two-direction stretching wire switch is a protection device to stop the adhesive tape transportation machine at emergency.

双向拉绳开关是用于胶带运输机现场紧急事故停机的一种保护装置。

Each thermantidote have the function of regulating independently,the temperature of each room can be controlled alone,and the independent fresh air can be sent into air condition room systematically.

同时各末端装置有独立的开关和调节功能，各房间的温度可独自调节与控制，且防止了空气的交叉感染。

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。