Cam switches are mainly used within the <a href="https://en.wikipedia.org/w/index.php?title=Low_voltage_range&amp;action=edit&amp;redlink=1" target="_self">low voltage range</a>. On a shaft, switching cams are made of abrasion-resistant conductive material. By rotating the shaft, the contacts are opened or closed by the cams. Often, a plurality of cams are seated on a shaft, which simultaneously switch or switch several pairs of contacts. 
凸轮开关 是利用<a href="https://baike.baidu.com/item/%E5%87%B8%E8%BD%AE%E6%9C%BA%E6%9E%84/4977411" target="_blank">凸轮机构</a>控制回路开路或闭路接触的控制用操作开关。扭转操作手柄可实现凸轮转动触点的开闭。

Digital Code Rotary Switches is similar to the regular rotary switch, except the outputs are binary encoded to save on pin requirements. 
波段开关，是一个很古老的名字。实际上应该叫做多刀多掷开关，因为它不仅仅能做波段开关，也能做其它的用途。

Digital Code Rotary Switches 波段开关

<table class="table table-hover table-striped table-condensed"><thead><tr><th colspan="7" rowspan="1"></th></tr><tr><th colspan="1" rowspan="1">【</th><th colspan="1" rowspan="1">86</th><th colspan="1" rowspan="1">Multi-Function</th><th colspan="1" rowspan="1">USB</th><th colspan="1" rowspan="1">Socket</th><th colspan="1" rowspan="1">】</th><th colspan="1" rowspan="7"></th></tr><tr><th colspan="11" rowspan="1"></th></tr><tr><th colspan="1" rowspan="1">【</th><th colspan="1" rowspan="1">86</th><th colspan="1" rowspan="1">British Standard</th><th colspan="1" rowspan="1">USB</th><th colspan="1" rowspan="1">Socket</th><th colspan="1" rowspan="1">】</th></tr><tr><th colspan="21" rowspan="1"></th></tr><tr><th colspan="1" rowspan="1">【</th><th colspan="1" rowspan="1">146</th><th colspan="1" rowspan="1">Multi-Function</th><th colspan="1" rowspan="1">USB</th><th colspan="1" rowspan="1">Socket</th><th colspan="1" rowspan="1">】</th></tr><tr><th colspan="31" rowspan="1"></th></tr><tr><th colspan="1" rowspan="1">【</th><th colspan="1" rowspan="1">146</th><th colspan="1" rowspan="1">British Standard</th><th colspan="1" rowspan="1">USB</th><th colspan="1" rowspan="1">Socket</th><th colspan="1" rowspan="1">】</th></tr></thead><tbody><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr></tbody><tfoot></tfoot></table>

Socket / Switch / Plug / 插座 / 开关 / 插头

Limit switch is a <a href="https://en.wikipedia.org/wiki/Switch" target="_self">switch</a> operated by the motion of a machine part or the presence of an object. A limit switch can be used for controlling machinery as part of a <a href="https://en.wikipedia.org/wiki/Control_system" target="_self">control system</a>, as a safety <a href="https://en.wikipedia.org/wiki/Interlock_(engineering)" target="_self">interlock</a>, or as a counter enumerating objects passing a point.<a href="https://en.wikipedia.org/wiki/Limit_switch#cite_note-Herman09-1" target="_self">[1]</a>
Limit switches are used in a variety of applications and environments because of their ruggedness, ease of installation, and reliability of operation. They can determine the presence, passing, positioning, and end of travel of an object. They were first used to define the limit of travel of an object, hence the name "limit switch". 
Standardized limit switches are industrial control components manufactured with a variety of operator types, including lever, roller plunger, and whisker type. Limit switches may be directly mechanically operated by the motion of the operating lever. A <a href="https://en.wikipedia.org/wiki/Reed_switch" target="_self">reed switch</a> may be used to indicate proximity of a magnet mounted on some moving part. <a href="https://en.wikipedia.org/wiki/Proximity_sensor" target="_self">Proximity switches</a> operate by the disturbance of an electromagnetic field, by capacitance, or by sensing a magnetic field.
Rarely, a final operating device such as a lamp or <a href="https://en.wikipedia.org/wiki/Solenoid_valve" target="_self">solenoid valve</a> is directly controlled by the contacts of an industrial limit switch, but more typically the limit switch is wired through a control <a href="https://en.wikipedia.org/wiki/Relay" target="_self">relay</a>, a motor <a href="https://en.wikipedia.org/wiki/Contactor" target="_self">contactor</a> control circuit, or as an input to a <a href="https://en.wikipedia.org/wiki/Programmable_logic_controller" target="_self">programmable logic controller</a>.

<table class="table table-hover table-striped table-condensed"><thead><tr><th colspan="1" rowspan="1">【</th><th colspan="1" rowspan="1">凸轮开关</th><th colspan="1" rowspan="1">：</th><th colspan="1" rowspan="1">CAM Switch</th><th colspan="1" rowspan="1">】</th><th colspan="1" rowspan="11"></th></tr><tr><th colspan="5" rowspan="1"></th></tr><tr><th colspan="1" rowspan="1">【</th><th colspan="1" rowspan="1">极限开关</th><th colspan="1" rowspan="1">：</th><th colspan="1" rowspan="1">Limit Switch</th><th colspan="1" rowspan="1">】</th></tr><tr><th colspan="13" rowspan="1"></th></tr><tr><th colspan="1" rowspan="1">【</th><th colspan="1" rowspan="1">波段开关</th><th colspan="1" rowspan="1">：</th><th colspan="1" rowspan="1">Digital Code Rotary Switches</th><th colspan="1" rowspan="1">】</th></tr><tr><th colspan="21" rowspan="1"></th></tr><tr><th colspan="1" rowspan="1">【</th><th colspan="1" rowspan="1">插座，插头，开关</th><th colspan="1" rowspan="1">：</th><th colspan="1" rowspan="1">Switch / Socket / Plug</th><th colspan="1" rowspan="1">】</th></tr><tr><th colspan="29" rowspan="1"></th></tr><tr><th colspan="1" rowspan="1">【</th><th colspan="1" rowspan="1">紧急开关</th><th colspan="1" rowspan="1">：</th><th colspan="1" rowspan="1">Emergency Switch</th><th colspan="1" rowspan="1">】</th></tr><tr><th colspan="37" rowspan="1"></th></tr><tr><th colspan="1" rowspan="1">【</th><th colspan="1" rowspan="1">脚踏开关</th><th colspan="1" rowspan="1">：</th><th colspan="1" rowspan="1">Foot Pedal Switch </th><th colspan="1" rowspan="1">】</th></tr></thead><tbody><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr></tbody><tfoot></tfoot></table>

Limit Switch - CAM Switch - DP Switch - Plug - Socket 极限开关 - 凸轮开关 - 波段开关 - 插座 - 插头

<table class="table table-hover table-striped table-condensed"><thead><tr><th colspan="6" rowspan="1"></th></tr><tr><th colspan="1" rowspan="1">【</th><th colspan="1" rowspan="1">Fanuc</th><th colspan="1" rowspan="1">-</th><th colspan="1" rowspan="1">A98L-0031-0026</th><th colspan="1" rowspan="1">】</th><th colspan="1" rowspan="10"></th></tr><tr><th colspan="9" rowspan="1"></th></tr><tr><th colspan="1" rowspan="1">【</th><th colspan="1" rowspan="1">Fanuc</th><th colspan="1" rowspan="1">-</th><th colspan="1" rowspan="1">A98L-0031-0028</th><th colspan="1" rowspan="1">】</th></tr><tr><th colspan="17" rowspan="1"></th></tr><tr><th colspan="1" rowspan="1">【</th><th colspan="1" rowspan="1">Panasonic</th><th colspan="1" rowspan="1">-</th><th colspan="1" rowspan="1">BR-2/3AGCT4A</th><th colspan="1" rowspan="1">】</th></tr><tr><th colspan="25" rowspan="1"></th></tr><tr><th colspan="1" rowspan="1">【</th><th colspan="1" rowspan="1">Panasonic</th><th colspan="1" rowspan="1">-</th><th colspan="1" rowspan="1">BR-AGCF2W</th><th colspan="1" rowspan="1">】</th></tr><tr><th colspan="33" rowspan="1"></th></tr><tr><th colspan="1" rowspan="1">【</th><th colspan="1" rowspan="1">Panasonic</th><th colspan="1" rowspan="1">-</th><th colspan="1" rowspan="1">BR-CCF2TH</th><th colspan="1" rowspan="1">】</th></tr><tr><th colspan="41" rowspan="1"></th></tr></thead><tbody><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr></tbody><tfoot></tfoot></table>

A connector is a coupling device that joins electrical terminations to create an electrical circuit. Connectors enable contact between wires, cables, printed circuit boards, and electronic components. Connector is design and manufacture an expansive portfolio of connectors that are engineered to reliably transmit data, power, and signal in the harshest environments, under the most extreme use. 
航空插头是连接器的一种，源于军工行业，故得名，简称航插。 航空插头是连接电气线路的机电元件，因此其自身的电气参数是选择航空插头首先要考虑的问题。 正确的选择和使用航空插头是保证电路可靠性的一个重要方面。

A controller card can be an electronic integrated chip, an expansion card or a stand-alone device that works as a crossing point with peripheral devices. 
控制卡掌控控制信号通过插在计算机扩展槽上的运动控制卡实现软件系统与安装在机床电气箱的进给电机驱动系统的连接与通讯。

<table><thead><tr><th colspan="3" rowspan="1"></th></tr><tr><th colspan="1" rowspan="9">【</th><th colspan="1" rowspan="1">NMB</th><th colspan="1" rowspan="9">】</th></tr><tr><th colspan="1" rowspan="1">San Ace</th></tr><tr><th colspan="1" rowspan="1">Panaflo</th></tr><tr><th colspan="1" rowspan="1">Habor</th></tr><tr><th colspan="1" rowspan="1">YS Tech</th></tr><tr><th colspan="1" rowspan="1">Sunon</th></tr><tr><th colspan="1" rowspan="1">TK Fan</th></tr><tr><th colspan="1" rowspan="1">Evercool</th></tr><tr><th colspan="1" rowspan="1">Commonwealth</th></tr><tr><th colspan="21" rowspan="1"></th></tr></thead><tbody><tr><td></td><td></td><td></td></tr></tbody><tfoot></tfoot></table>

An electric motor is an <a href="https://en.wikipedia.org/wiki/Electric_machine" target="_self">electrical machine</a> that converts <a href="https://en.wikipedia.org/wiki/Electrical_energy" target="_self">electrical energy</a> into <a href="https://en.wikipedia.org/wiki/Mechanical_energy" target="_self">mechanical energy</a>. Most electric motors operate through the interaction between the motor's <a href="https://en.wikipedia.org/wiki/Magnetic_field" target="_self">magnetic field</a> and <a href="https://en.wikipedia.org/wiki/Electric_current" target="_self">electric current</a> in a <a href="https://en.wikipedia.org/wiki/Electromagnetic_coil" target="_self">wire winding</a> to generate force in the form of <a href="https://en.wikipedia.org/wiki/Torque" target="_self">torque</a> applied on the motor's shaft. Electric motors can be powered by <a href="https://en.wikipedia.org/wiki/Direct_current" target="_self">direct current</a> (DC) sources, such as from batteries, or <a href="https://en.wikipedia.org/wiki/Rectifiers" target="_self">rectifiers</a>, or by <a href="https://en.wikipedia.org/wiki/Alternating_current" target="_self">alternating current</a> (AC) sources, such as a power grid, <a href="https://en.wikipedia.org/wiki/Inverter_(electrical)" target="_self">inverters</a> or electrical generators. An <a href="https://en.wikipedia.org/wiki/Electric_generator" target="_self">electric generator</a> is mechanically identical to an electric motor, but operates with a reversed flow of power, converting mechanical energy into electrical energy. 
电动机（Motor）是把<a href="https://baike.baidu.com/item/%E7%94%B5%E8%83%BD/889532" target="_blank">电能</a>转换成<a href="https://baike.baidu.com/item/%E6%9C%BA%E6%A2%B0%E8%83%BD/537228" target="_blank">机械能</a>的一种设备。它是利用通电<a href="https://baike.baidu.com/item/%E7%BA%BF%E5%9C%88/6244981" target="_blank">线圈</a>（也就是<a href="https://baike.baidu.com/item/%E5%AE%9A%E5%AD%90/9205822" target="_blank">定子</a>绕组）产生旋转磁场并作用于转子（如鼠笼式闭合铝框）形成磁电动力旋转<a href="https://baike.baidu.com/item/%E6%89%AD%E7%9F%A9/430391" target="_blank">扭矩</a>。电动机按使用电源不同分为<a href="https://baike.baidu.com/item/%E7%9B%B4%E6%B5%81%E7%94%B5%E5%8A%A8%E6%9C%BA/6393701" target="_blank">直流电动机</a>和<a href="https://baike.baidu.com/item/%E4%BA%A4%E6%B5%81%E7%94%B5%E5%8A%A8%E6%9C%BA/4815554" target="_blank">交流电动机</a>，电力系统中的电动机大部分是<a href="https://baike.baidu.com/item/%E4%BA%A4%E6%B5%81%E7%94%B5%E6%9C%BA/9952200" target="_blank">交流电机</a>，可以是<a href="https://baike.baidu.com/item/%E5%90%8C%E6%AD%A5%E7%94%B5%E6%9C%BA/6468631" target="_blank">同步电机</a>或者是<a href="https://baike.baidu.com/item/%E5%BC%82%E6%AD%A5%E7%94%B5%E6%9C%BA/6471176" target="_blank">异步电机</a>（电机定子磁场转速与转子旋转转速不保持同步速）。电动机主要由定子与转子组成，通电导线在磁场中受力运动的方向跟电流方向和磁感线（磁场方向）方向有关。电动机工作原理是磁场对电流受力的作用，使电动机转动。

Electric Motor / Coolant Pump / Vacuum Pump Motor（ 电机 / 水泵 / 马达 / 真空泵 ）

An Inverter controls the frequency of power supplied to an AC motor to control the rotation speed of the motor. &hellip; The use of an inverter to adjust the speed and acceleration of an AC motor increases the range of applications of the motor compared with a motor that operates at a constant speed. 
变频器是应用变频技术与微电子技术，通过改变电机工作电源频率方式来控制交流电动机的电力控制设备。

<table class="table table-hover table-striped table-condensed"><thead><tr><th colspan="3" rowspan="1"></th></tr><tr><th colspan="1" rowspan="1">【</th><th colspan="1" rowspan="1">Long Arm LED Work Lamp</th><th colspan="1" rowspan="1">】</th></tr><tr><th colspan="5" rowspan="1"></th></tr><tr><th colspan="1" rowspan="1">【</th><th colspan="1" rowspan="1">Flexible Arm LED Work Lamp</th><th colspan="1" rowspan="1">】</th></tr><tr><th colspan="9" rowspan="1"></th></tr><tr><th colspan="1" rowspan="1">【</th><th colspan="1" rowspan="1">CNC Machine Work Lamp</th><th colspan="1" rowspan="1">】</th></tr><tr><th colspan="13" rowspan="1"></th></tr></thead><tbody><tr><td></td><td></td><td></td></tr></tbody><tfoot></tfoot></table>

Lamps / Work Lamps / Signal Lights / Indicator Lights 灯 工作灯 信号灯 指示灯

Magnetic contactors are used in the electric motors to balance the change in frequency of the motor or the state of the motor which can be termed as the switching of the motor from ON and OFF state. … Magnetic contactors act as a safeguard to protect the power supply and the motor. 
接触器分为<a href="https://baike.baidu.com/item/%E4%BA%A4%E6%B5%81%E6%8E%A5%E8%A7%A6%E5%99%A8/8429270" target="_blank">交流接触器</a>（电压AC）和<a href="https://baike.baidu.com/item/%E7%9B%B4%E6%B5%81%E6%8E%A5%E8%A7%A6%E5%99%A8/2208818" target="_blank">直流接触器</a>（电压DC），它应用于电力、配电与用电场合。接触器广义上是指工业电中利用线圈流过电流产生磁场，使触头闭合，以达到控制负载的电器。

Magnetic Contactor / Relay 接触器 / 续电器

A manual pulse generator (MPG) is a device for generating <a href="https://en.wikipedia.org/wiki/Pulse_(signal_processing)" target="_self">electrical pulses</a> (short bursts of low <a href="https://en.wikipedia.org/wiki/Electric_current" target="_self">current</a>) in <a href="https://en.wikipedia.org/wiki/Electronics" target="_self">electronic systems</a>, under the control of a human operator (manually), as opposed to the pulses automatically generated by <a href="https://en.wikipedia.org/wiki/Software" target="_self">software</a>. MPGs are used on <a href="https://en.wikipedia.org/wiki/Numerical_control" target="_self">computer numerically controlled</a> (CNC) <a href="https://en.wikipedia.org/wiki/Machine_tool" target="_self">machine tools</a>, on some <a href="https://en.wikipedia.org/wiki/Microscope" target="_self">microscopes</a>, and on other devices that use precise component positioning.
电子手轮即手摇脉冲发生器（Manual Pulse Generator，也称为手轮，手脉，手动脉波发生器等)，用于教导式CNC 机械工作原点设定、步进微调与中断插入等动作，另外在印刷机械上也广泛的使用电子手轮。

Manual Pulse Generator ( MPG ) 电子手轮 脉冲发生器

F<a href="https://en.wikipedia.org/wiki/Flash_memory" target="_self">lash memory</a> <a href="https://en.wikipedia.org/wiki/Mass_storage_device" target="_self">mass storage device</a> used mainly in portable electronic devices. The format was specified and the devices were first manufactured by <a href="https://en.wikipedia.org/wiki/SanDisk" target="_self">SanDisk</a> in 1994.
Memory card became one of the most successful of the early memory card formats, surpassing <a href="https://en.wikipedia.org/wiki/Miniature_Card" target="_self">Miniature Card</a> and <a href="https://en.wikipedia.org/wiki/SmartMedia" target="_self">SmartMedia</a>.&nbsp;
（闪存卡）最初是一种用于便携式电子设备的数据存储设备，于1994年首次由<a href="https://zh.wikipedia.org/wiki/SanDisk" target="_self">SanDisk</a>公司生产并制定相关规范。它的物理格式被多种设备所采用。它最初是建立在<a href="https://zh.wikipedia.org/wiki/%E8%8B%B1%E7%89%B9%E5%B0%94" target="_self">英特尔</a>的<a href="https://zh.wikipedia.org/wiki/%E6%88%96%E9%9D%9E%E5%9E%8B%E9%97%AA%E5%AD%98" target="_self">或非型闪存</a>的基础上，之后改为使用<a href="https://zh.wikipedia.org/wiki/%E4%B8%8E%E9%9D%9E%E5%9E%8B%E9%97%AA%E5%AD%98" target="_self">与非型闪存</a>。CF是最老也是最成功的标准之一，尤其在早期的专业数码相机市场。&nbsp;

<table><thead><tr><th colspan="3" rowspan="1"></th></tr><tr><th colspan="1" rowspan="1">【</th><th colspan="1" rowspan="1">CF Card Reader</th><th colspan="1" rowspan="1">】</th></tr><tr><th colspan="5" rowspan="1"></th></tr><tr><th colspan="1" rowspan="1">【</th><th colspan="1" rowspan="1">CF Card Adaptor</th><th colspan="1" rowspan="1">】</th></tr><tr><th colspan="9" rowspan="1"></th></tr><tr><th colspan="1" rowspan="1">【</th><th colspan="1" rowspan="1">CF Card 256MB</th><th colspan="1" rowspan="1">】</th></tr><tr><th colspan="13" rowspan="1"></th></tr><tr><th colspan="1" rowspan="1">【</th><th colspan="1" rowspan="1">CF Card 512MB</th><th colspan="1" rowspan="1">】</th></tr><tr><th colspan="17" rowspan="1"></th></tr><tr><th colspan="1" rowspan="1">【</th><th colspan="1" rowspan="1">CF Card 1GB</th><th colspan="1" rowspan="1">】</th></tr><tr><th colspan="21" rowspan="1"></th></tr></thead><tbody><tr><td></td><td></td><td></td></tr></tbody><tfoot></tfoot></table>

Memory Card & Accessories 闪存卡 内存卡

A photoelectric sensor is a device used to determine the distance, absence, or presence of an object by using a light transmitter, often <a href="https://en.wikipedia.org/wiki/Infrared" target="_self">infrared</a>, and a <a href="https://en.wikipedia.org/wiki/Photoelectric_effect" target="_self">photoelectric</a> receiver. They are largely used in industrial manufacturing. There are three different useful types: opposed (through-beam), retro-reflective, and proximity-sensing (diffused). 
接近开关是一种无需与运动部件进行机械直接接触而可以操作的<a href="https://baike.baidu.com/item/%E4%BD%8D%E7%BD%AE%E5%BC%80%E5%85%B3/7282033" target="_blank">位置开关</a>，当物体接近开关的感应面到动作距离时，不需要机械接触及施加任何压力即可使开关动作，从而驱动直流电器或给计算机（plc）装置提供<a href="https://baike.baidu.com/item/%E6%8E%A7%E5%88%B6%E6%8C%87%E4%BB%A4/5205264" target="_blank">控制指令</a>。接近开关是种开关型传感器（即无触点开关），它既有行程开关、微动开关的特性，同时具有传感性能，且动作可靠，性能稳定，频率响应快，应用寿命长，抗干扰能力强等、并具有防水、防震、耐腐蚀等特点。产品有电感式、电容式、霍尔式、交、直流型。

Photo / Proximity Sensor / Photoelectric Sensor 光感 / 光电 / 接近 开关

A printed circuit board (PCB) mechanically supports and electrically connects <a href="https://en.wikipedia.org/wiki/Electrical" target="_self">electrical</a> or <a href="https://en.wikipedia.org/wiki/Electronic_components" target="_self">electronic components</a> using <a href="https://en.wikipedia.org/wiki/Electrical_conductor" target="_self">conductive</a> tracks, pads and other features <a href="https://en.wikipedia.org/wiki/Industrial_etching" target="_self">etched</a> from one or more sheet layers of copper <a href="https://en.wikipedia.org/wiki/Laminated" target="_self">laminated</a> onto and/or between sheet layers of a <a href="https://en.wikipedia.org/wiki/Insulator_(electricity)" target="_self">non-conductive</a> substrate. Components are generally <a href="https://en.wikipedia.org/wiki/Soldering" target="_self">soldered</a> onto the PCB to both electrically connect and mechanically fasten them to it. 
电路板的名称有：陶瓷电路板，<a href="https://baike.baidu.com/item/%E6%B0%A7%E5%8C%96%E9%93%9D%E9%99%B6%E7%93%B7/5616170" target="_blank">氧化铝陶瓷</a>电路板，<a href="https://baike.baidu.com/item/%E6%B0%AE%E5%8C%96%E9%93%9D%E9%99%B6%E7%93%B7/1060408" target="_blank">氮化铝陶瓷</a>电路板，<a href="https://baike.baidu.com/item/%E7%BA%BF%E8%B7%AF%E6%9D%BF/3832594" target="_blank">线路板</a>，<a href="https://baike.baidu.com/item/PCB%E6%9D%BF" target="_blank">PCB板</a>，<a href="https://baike.baidu.com/item/%E9%93%9D%E5%9F%BA%E6%9D%BF/5879616" target="_blank">铝基板</a>，<a href="https://baike.baidu.com/item/%E9%AB%98%E9%A2%91%E6%9D%BF/1224414" target="_blank">高频板</a>，厚铜板，阻抗板，<a href="https://baike.baidu.com/item/PCB/146397" target="_blank">PCB</a>，超薄线路板，超薄电路板，印刷（铜刻蚀技术）电路板等。电路板使电路迷你化、直观化，对于固定电路的批量生产和优化用电器布局起重要作用，电路板可称为<a href="https://baike.baidu.com/item/%E5%8D%B0%E5%88%B7%E7%BA%BF%E8%B7%AF%E6%9D%BF/351168" target="_blank">印刷线路板</a>或<a href="https://baike.baidu.com/item/%E5%8D%B0%E5%88%B7%E7%94%B5%E8%B7%AF%E6%9D%BF/10690193" target="_blank">印刷电路板</a>。

Printed Circuit Board (PCB) 电路板 控制卡

A coolant pump is a type of pump used to recirculate a coolant, generally a liquid, that is used to transfer heat away from an engine or other device that generates heat as a byproduct of producing energy.
水泵电机能广泛应用于不同领域，除在易燃、易爆或有腐蚀性气体的场合外，如运输、混合、印刷、农业机械和视频处理机中应用外，还可以应用与机床、泵类、鼓风机、压缩机等配套设备。

A rectifier is an electrical device that <a href="https://en.wikipedia.org/wiki/Electric_power_conversion" target="_self">converts</a> <a href="https://en.wikipedia.org/wiki/Alternating_current" target="_self">alternating current</a> (AC), which periodically reverses direction, to <a href="https://en.wikipedia.org/wiki/Direct_current" target="_self">direct current</a> (DC), which flows in only one direction. The reverse operation is performed by the <a href="https://en.wikipedia.org/wiki/Power_inverter" target="_self">inverter</a>. 
整流器（英文：rectifier）是把<a href="https://baike.baidu.com/item/%E4%BA%A4%E6%B5%81%E7%94%B5/1023508" target="_blank">交流电</a>转换成<a href="https://baike.baidu.com/item/%E7%9B%B4%E6%B5%81%E7%94%B5/1023266" target="_blank">直流电</a>的装置，可用于供电装置及侦测无线电<a href="https://baike.baidu.com/item/%E4%BF%A1%E5%8F%B7" target="_blank">信号</a>等。整流器可以由真空管，引燃管，固态矽<a href="https://baike.baidu.com/item/%E5%8D%8A%E5%AF%BC%E4%BD%93%E4%BA%8C%E6%9E%81%E7%AE%A1/3727140" target="_blank">半导体二极管</a>，汞弧等制成。相反，一套把直流电转换成交流电的装置，则称为“逆变器” （inverter）。

A power supply is an electrical device that supplies electric power to an electrical load. The primary function of a power supply is to convert electric current from a source to the correct voltage, current, and frequency to power the load. 
开关模式电源（Switch Mode Power Supply，简称SMPS），又称交换式电源、开关变换器，是一种高频化电能转换装置，是<a href="https://baike.baidu.com/item/%E7%94%B5%E6%BA%90%E4%BE%9B%E5%BA%94%E5%99%A8" target="_blank">电源供应器</a>的一种。其功能是将一个位准的<a href="https://baike.baidu.com/item/%E7%94%B5%E5%8E%8B" target="_blank">电压</a>，透过不同形式的架构转换为用户端所需求的电压或<a href="https://baike.baidu.com/item/%E7%94%B5%E6%B5%81" target="_blank">电流</a>。开关电源的输入多半是交流电源（例如<a href="https://baike.baidu.com/item/%E5%B8%82%E7%94%B5" target="_blank">市电</a>）或是直流电源，而输出多半是需要直流电源的设备，例如<a href="https://baike.baidu.com/item/%E4%B8%AA%E4%BA%BA%E7%94%B5%E8%84%91" target="_blank">个人电脑</a>，而开关电源就进行两者之间<a href="https://baike.baidu.com/item/%E7%94%B5%E5%8E%8B" target="_blank">电压</a>及<a href="https://baike.baidu.com/item/%E7%94%B5%E6%B5%81" target="_blank">电流</a>的转换。

In engineering practice, the distinction between electrical engineering and electronics is usually based on the comparative strength of the <a href="https://www.britannica.com/science/electric-current" target="_self">electric currents</a> used. In this sense, electrical engineering is the branch dealing with “heavy current”—that is, electric light and <a href="https://www.britannica.com/technology/electric-power" target="_self">power</a> systems and apparatuses—whereas electronics engineering deals with such “light current” applications as <a href="https://www.britannica.com/technology/telephone" target="_self">telephone</a> and <a href="https://www.britannica.com/technology/radio-technology" target="_self">radio</a> communication, <a href="https://www.britannica.com/technology/computer" target="_self">computers</a>, <a href="https://www.britannica.com/technology/radar" target="_self">radar</a>, and automatic <a href="https://www.britannica.com/technology/control-system" target="_self">control</a> systems. 
电子电器，全部或主要部分由电子器件和电子线路构成的电器元件或装置的总称。如接近开关、晶体管温度继电器、同步接触器等。在信号检测、故障监视与保护等环节上优先实现电子化,而通断强电的操作则较多由有触点电器完成,由于自关断器的发展,很多已由诸如晶闸管、<a href="https://baike.baidu.com/item/%E7%BB%9D%E7%BC%98%E6%A0%85%E5%8F%8C%E6%9E%81%E5%9E%8B%E6%99%B6%E4%BD%93%E7%AE%A1/12731336" target="_blank">绝缘栅双极型晶体管</a>来完成。

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Transistor CW7815CK Amplifier Audio Power Transistors 晶体管 EE17-CW7815CK

CHINT 3 way Selector ON OFF Rotate Switch Start Button 22mm NC NO Black Color Grinding Milling Wire Cut Drilling Machine Lathe 正泰 机器 机床 旋转 开关 自锁 自复 常开 常关 随便 配搭

CHINT Emergency ON OFF Rotate Switch Button 22mm NC NO Red Color Grinding Milling Wire Cut Drilling Machine Lathe 正泰 紧急 旋转 开关 按钮

CHINT Foot Pedal Switch ( YBLT-EKW-5A/B ) 脚踏开关

Delixi EKW-5A/B Foot Pedal Switch Non-Slip Surface for Industrial Machine 5A 380VAC 220VDC IP62 China Die-Cast Housing 德力西 脚踏开关 工业

CHINT 2 way Selector ON OFF Rotate Switch Start Button 22mm NC NO Black Color Grinding Milling Wire Cut Drilling Machine Lathe 正泰 机器 机床 旋转 开关 自锁 自复 常开 常关 随便 配搭

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Limit Switch - CAM Switch - DP Switch - Plug - Socket 极限开关 - 凸轮开关 - 波段开关 - 插座 - 插头

Transistor CW7815CK Amplifier Audio Power Transistors 晶体管 EE17-CW7815CK

CHINT 3 way Selector ON OFF Rotate Switch Start Button 22mm NC NO Black Color Grinding Milling Wire Cut Drilling Machine Lathe 正泰机器机床旋转开关自锁自复常开常关随便配搭

CHINT Emergency ON OFF Rotate Switch Button 22mm NC NO Red Color Grinding Milling Wire Cut Drilling Machine Lathe 正泰紧急旋转开关按钮

CHINT Foot Pedal Switch ( YBLT-EKW-5A/B ) 脚踏开关

Delixi EKW-5A/B Foot Pedal Switch Non-Slip Surface for Industrial Machine 5A 380VAC 220VDC IP62 China Die-Cast Housing 德力西脚踏开关工业

CHINT 2 way Selector ON OFF Rotate Switch Start Button 22mm NC NO Black Color Grinding Milling Wire Cut Drilling Machine Lathe 正泰机器机床旋转开关自锁自复常开常关随便配搭

【	凸轮开关	：	CAM Switch	】

【	极限开关	：	Limit Switch	】

【	波段开关	：	Digital Code Rotary Switches	】

【	插座，插头，开关	：	Switch / Socket / Plug	】

【	紧急开关	：	Emergency Switch	】

【	脚踏开关	：	Foot Pedal Switch	】

Limit Switch - CAM Switch - DP Switch - Plug - Socket 极限开关 - 凸轮开关 - 波段开关 - 插座 - 插头

Transistor CW7815CK Amplifier Audio Power Transistors 晶体管 EE17-CW7815CK

CHINT 3 way Selector ON OFF Rotate Switch Start Button 22mm NC NO Black Color Grinding Milling Wire Cut Drilling Machine Lathe 正泰 机器 机床 旋转 开关 自锁 自复 常开 常关 随便 配搭

CHINT Emergency ON OFF Rotate Switch Button 22mm NC NO Red Color Grinding Milling Wire Cut Drilling Machine Lathe 正泰 紧急 旋转 开关 按钮

CHINT Foot Pedal Switch ( YBLT-EKW-5A/B ) 脚踏开关

Delixi EKW-5A/B Foot Pedal Switch Non-Slip Surface for Industrial Machine 5A 380VAC 220VDC IP62 China Die-Cast Housing 德力西 脚踏开关 工业

CHINT 2 way Selector ON OFF Rotate Switch Start Button 22mm NC NO Black Color Grinding Milling Wire Cut Drilling Machine Lathe 正泰 机器 机床 旋转 开关 自锁 自复 常开 常关 随便 配搭

CHINT 3 way Selector ON OFF Rotate Switch Start Button 22mm NC NO Black Color Grinding Milling Wire Cut Drilling Machine Lathe 正泰机器机床旋转开关自锁自复常开常关随便配搭

CHINT Emergency ON OFF Rotate Switch Button 22mm NC NO Red Color Grinding Milling Wire Cut Drilling Machine Lathe 正泰紧急旋转开关按钮

Delixi EKW-5A/B Foot Pedal Switch Non-Slip Surface for Industrial Machine 5A 380VAC 220VDC IP62 China Die-Cast Housing 德力西脚踏开关工业

CHINT 2 way Selector ON OFF Rotate Switch Start Button 22mm NC NO Black Color Grinding Milling Wire Cut Drilling Machine Lathe 正泰机器机床旋转开关自锁自复常开常关随便配搭