Detailed introduction of the operation principle of key switch
Release time：2019-08-24 Clicks： Click
What is the use principle of the key switch? We will give you detailed details below.
Speaking of the button switch, it is very popular in ordinary life, almost everywhere, and closely related to our life, so since it is so closely related to our life, then how much do you know about him? I believe that if we do not understand this aspect, ordinary people generally do not know or explain much, not enough detail, then the next will be from a simple key on what is the switch, what is the principle, structure, what kind of classification, and usually do not understand the model description. To help you better understand what is the key switch.
First of all, we will introduce what is the key switch and what is the principle of the key switch.
Button-button switch is abbreviated as button, which is usually used to turn on and off control circuit. It is a kind of low-voltage electrical device that sends out instructions in electric drive. It is widely used as a main command electrical device. In the electric automatic control circuit, it is used to manually send out control signals to control contactors, relays, electromagnetic starters and so on. Its characteristic is that it is installed in the machine and instrument in progress. Most of the time it is in the position of the initial free state. It only changes to the second state (position) under the action of external force when required. Once the external force is removed, the switch will return to the initial position due to the action of spring. The key switch can complete the basic control of starting, stopping, reversing, changing speed and interlocking. Usually each key switch has two pairs of contacts. Each pair of contacts consists of a constant open contact and a constant closed contact. When the button is pressed, two pairs of contacts act at the same time, and the contacts are usually closed, and the contacts are often opened and closed.
When we know what a button switch is, or know something about it, let's talk about buttons.