2022年10月27日 · In this post I have explained comprehensively regarding how relay works in electronic circuits, how to identify its pinouts of any relay through a meter and connect in circuits. Whether it’s for flashing a lamp, for switching AC motor or for other similar operations, relays are for such applications.

Normally open (NO) and Normally closed (NC) are terms used to define the states of switches, sensors or relay contacts under when its coil is not excited. It is the fundamental of process automation. What is NO contact? A NO contact or a normally open contact is the one that remains open until a certain condition is satisfied.

NC常闭端，就是继电器不通电，这个端和COM公共端是连通的，触点是闭合的，开关是关闭的。 通电后，这端和COM端是断开的。 NO常开端，就是继电器不通电，这端和COM端是断开的，不连通。 通电后，和COM端是连通。 有两个灯泡·1和2，继电器接线，主线接com，1灯接no，2灯接nc，继电器关闭时2灯亮，继电器打开时1灯亮，负极线直连灯泡负极。 进线接COM，传出的线路接NO，继电器打开时com和no被接通。 NC常闭端，就是继电器不bai通电，这个端和COM公 …

2022年11月14日 · Here you will learn the normally open relay and normally closed relay (NO & NC Relay), diagrams, symbols, and how to check them. Learn about the different types of relays including 4 pin normally open and normally closed contacts.

Normally open (NO) and Normally Closed (NC) contacts are two contacts that comprise an ordinary relay. You can switch the common terminal with either NC or NO. Let’s get into more detail about different types of relay contacts.

NO，即nomal open，常开触点，继电器线圈未通电时断开。 NC，即nomal close，常闭触点，继电器线圈未通电时导通。 在常态（不通电）的情况下处于断开状态的触点叫常开触点，线圈得电时常开接点会闭合，而常闭接点会断开。

2025年1月1日 · What is the difference between Normally Open (NO) and Normally Closed (NC) contacts? Normally open (NO) contacts mean that current does not flow through them in its normal state. When normally open contacts are activated …

2018年10月12日 · NC是normally close的縮寫，指檢測體沒有被檢測時，負載電流接通的形式。 在不通電時處於閉合導通狀態的觸點，我們叫它常閉觸點。 不管是常開還是常閉，都是指它的原始狀態。

2024年7月4日 · 继电器通常有常开（Normally Open，NO）和常闭（Normally Closed，NC）两组触点。 常闭触点： 在继电器未通电时处于闭合状态，当电磁线圈通电时，触点打开。 常开触点： 在继电器未通电时处于打开状态，当电磁线圈通电时，触点闭合。

The difference of NO and NC relay switch: NO (Normally Open) Switch = Still stays in open state unless the condition is met. NC (Normally Closed) Switch = Still stays in closed state unless the condition is met.