微动开关介绍及应用（中英文）
什么是微动开关 / WHAT ARE MICRO-SWITCHES
微动开关是需要非常小的力（推/压）以快速操作的开关。它们非常可靠、快速且使用效率高。微动开关也称为微型速动开关。微动开关用于许多现代智能应用，没有它们智能设备无法运行。
Micro-switches are switches that need a very little amount of force (push/pressure) to operate at a rapid speed. They are very reliable, fast and efficient to use. A micro-switch is also known as a miniature snap-action switch. The micro-switches are used in many modern-day smart applications without them smart appliances are not possible.
微动开关的类型 / THE TYPE OF MICRO SWITCH
微动开关通常用于许多电气和机械设备中，因为它们提供了一种检测物理运动或位置变化的可靠方法。有几种具有不同电路配置的微动开关，包括 SPDT、SPST NC、SPST NO、DPDT、DPST NO 和 DPST NC 电路。
Micro switches are commonly used in many electrical and mechanical devices as they provide a reliable way to detect physical movements or position changes. There are several types of microswitches with different circuit configurations, including SPDT, SPST NC, SPST NO, DPDT, DPST NO, and DPST NC circuits.
SPDT（单刀双掷）
SPDT 微动开关具有三个端子，一个是公共端子 (C)，两个是开关端子（NO 和 NC）。当开关未激活时，公共（C）端连接到常闭（NC）端，当开关激活时，公共（C）端连接到常开（NO）端。
SPDT (Single Pole Double Throw)
A SPDT micro switch has three terminals, one common (C) and two switched (NO and NC). When the switch is not activated, the common (C) terminal is connected to the normally closed (NC) terminal, and when the switch is activated, the common (C) terminal is connected to the normally open (NO) terminal.
SPST NC（单刀单掷常闭）
SPST NC 微动开关有两个端子，一个是公共端子 (C)，一个是常闭端子 (NC)。当开关未激活时，公共 (C) 端子连接到常闭 (NC) 端子，当开关激活时，连接断开。
SPST NC (Single Pole Single Throw Normally Closed)
A SPST NC micro switch has two terminals, one common (C) and one normally closed (NC). When the switch is not activated, the common (C) terminal is connected to the normally closed (NC) terminal, and when the switch is activated, the connection is broken.
SPST NO（单刀单掷常开）
SPST NO 微动开关有两个端子，一个是公共端子 (C)，一个是常开端子 (NO)。当开关未激活时，公共端（C）和常开（NO）端子之间没有连接，当开关激活时，连接建立。
SPST NO (Single Pole Single Throw Normally Open)
A SPST NO micro switch has two terminals, one common (C) and one normally open (NO). When the switch is not activated, there is no connection between the common (C) and normally open (NO) terminals, and when the switch is activated, the connection is established.
DPDT（双刀双掷）
双刀双掷微动开关有六个端子、两个公共端子（C1 和 C2）和四个开关端子（NO1、NO2、NC1 和 NC2）。两极相互独立，同时运行。当开关未被激活时，公共端（C1）连接到常闭（NC1）端，公共端（C2）连接到常闭（NC2）端。
开关动作时接反，公共端（C1）接常开（NO1）端，公共端（C2）接常开（NO2）端。
DPDT (Double Pole Double Throw)
A DPDT micro switch has six terminals, two commons (C1 and C2) and four switched (NO1, NO2, NC1, and NC2). The two poles are independent of each other and operate simultaneously. When the switch is not activated, the common (C1) terminal is connected to the normally closed (NC1) terminal, and the common (C2) terminal is connected to the normally closed (NC2) terminal.
When the switch is activated, the connection is reversed, and the common (C1) terminal is connected to the normally open (NO1) terminal, and the common (C2) terminal is connected to the normally open (NO2) terminal.
DPST NC（双刀单掷常闭）
DPST NC 微动开关有四个端子，两个公共端（C1 和 C2）和两个常闭（NC1 和 NC2）。当开关未激活时，两个公共端（C1 和 C2）都连接到它们各自的常闭（NC1 和 NC2）端子，当开关被激活时，连接断开。
DPST NC (Double Pole Single Throw Normally Closed)
A DPST NC micro switch has four terminals, two commons (C1 and C2) and two normally closed (NC1 and NC2). When the switch is not activated, both commons (C1 and C2) are connected to their respective normally closed (NC1 and NC2) terminals, and when the switch is activated, the connection is broken.
DPST NO（双刀单掷常开）
DPST NO 微动开关有四个端子，两个公共端（C1 和 C2）和两个常开（NO1 和 NO2）。当开关未激活时，公共端（C1 和 C2）和常开（NO1 和 NO2）端子之间没有连接，当开关激活时，连接建立。
DPST NO (Double Pole Single Throw Normally Open)
A DPST NO micro switch has four terminals, two commons (C1 and C2) and two normally open (NO1 and NO2). When the switch is not activated, there is no connection between the commons (C1 and C2) and normally open (NO1 and NO2) terminals, and when the switch is activated, the connection is established.
可以根据应用选择使用的微动开关类型。各种类型的杆端子可用于微动开关，如销柱塞、短直杆、标准直杆、长直杆、加长直杆、小型模拟滚轮杆、标准模拟滚轮杆、滚轮杆、L 形杆。
Depending on the application we can select the type of micro switch using. Various types of lever terminals are available in microswitch like Pin Plunger, Short Straight lever, Standard Straight Lever, Long Straight Lever, Extended Straight Lever, Small Simulated Roller Lever, Standard Simulated Roller Lever, Roller Lever, L-Shaped Lever.
微动开关的接线步骤 / THE STEP TO WIRE MICRO SWITCH
确定微动开关类型：微动开关有几种类型，包括 SPDT（单刀双掷）、SPST（单刀单掷）和 DPDT（双刀双掷）等。在接线之前，请确保知道使用的是什么类型。
Determine the type of micro switch you have: There are several types of micro switches, including SPDT (Single-Pole Double-Throw), SPST (Single-Pole Single-Throw), and DPDT (Double-Pole Double-Throw). Make sure you know what type you have before wiring.
准备电线：切断并剥去用于连接开关的电线。请务必留出足够的电线长度以连接开关和要连接的设备。
Prepare the wires: Cut and strip the wires you’ll use to connect the switch. Be sure to leave enough wire length to reach the switch and the device you’re connecting it to.
识别端子：SPDT 微动开关通常具有三个端子：公共 (C)、常闭 (NC) 和常开 (NO)。公共端子通常是中心端子，NC 和 NO 端子在两侧。
Identify the terminals: The SPDT micro switches typically have three terminals: common (C), normally closed (NC), and normally open (NO). The common terminal is usually the center terminal, and the NC and NO terminals are on either side.
连接电线：将一根电线连接到公共端子，将另一根电线连接到 NC 或 NO 端子，具体取决于应用。如果需要同时使用 NC 和 NO 端子，则需要使用 DPDT 开关。
Connect the wires: Connect one wire to the common terminal and another wire to either the NC or NO terminal, depending on your application. If you need to use both NC and NO terminals, you’ll need to use a DPDT switch.
绝缘连接：连接电线后，应使用电工胶带或热缩管绝缘连接，以防止意外短路。
Insulate the connections: Once you’ve connected the wires, you should insulate the connections with electrical tape or heat shrink tubing to prevent accidental shorts.
测试开关：最后，测试开关以确保其正常工作。根据应用，可能需要调整开关位置或其他设置以获得所需的结果。
Test the switch: Finally, test the switch to make sure it’s working properly. Depending on your application, you may need to adjust the switch position or other settings to get the desired results.
微动开关的应用 / APPLICATION OF MICRO SWITCH
多年来，微动开关已融入日常生活电器的设计中。从冰箱的灯到自动门，都会有微动开关。今天，微型开关用于 3D 打印机、微波炉、空气炸锅、电动工具等智能电器。没有微动开关，就没有系统的反馈，也就没有智能电器。
3D打印机
感应门打开或关闭
机器人项目
冰箱
HVAC
Over the year, the microswitch has been integrated into the design of our everyday life appliances. From the refrigerator light to the automatic door, the microswitch had been there however hidden. Today, microswitches are in 3D printers, smart appliances such as microwaves, air fryers, power tools. Without the microswitches, there will be no feedback from the system and there will be no smart appliances.
3D printer
Senses door open or closed
Robotic projects
Refrigerators
HVAC
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