Views: 24 Author: China Micro Switch Manufacturer Publish Time: 2020-07-06 Origin: https://www.unionwells.com/
There is no doubt that micro switches are a typical example of how far technology has managed to advance in these recent times. Their benefits have made them the favorite for most companies which are into the field of manufacturing electrical devices and appliances. These could be advantages over conventional switches such as reliability, affordability and durability. The advent of micro switch has made it possible for appliances to carry out functions which otherwise wouldn't have been possible. The major problem is that most people don't understand how these devices work or function.
In case you don't know, micro switches are unique in terms of how they have been built to function once integrated into appliances. You have come to the right place though. This is because the major aim of this post will be to help you understand more facts about micro switches including their features and functionalities. As simple as the details below may sound, it can make the difference between understanding how to get the best from electrical switches or struggle to make use of them. Don't forget that having the right knowledge about micro switches can help you know the right ones that will be perfect for your electrical project.
What you need to know
Before finding out how micro switches work, it is important you know that they are also called snap action switches. As a matter of fact, micro switch is only a generic name that people tend to associate with these switches. In other words, snap action switches is what they are originally known as. Most repairers of electrical devices or appliances don't understand how these switches have been built to work. It is usually one of the first components that most people consider changing once their devices aren't working properly.
This is very wrong especially when you don't know how they work. One little secret is that if you can understand how they function, testing whether they are working or not becomes a very easy task. Through this knowledge, you will know where the fault in your device is coming from. As a professional, there is no need trying to find faults based on guesswork. This can waste your clients’ time and discourage them from patronizing you in the future. The details below will help you understand how these switches can function.
What is a micro switch?
Simply put, these switches have been designed to change the direction of power once its arm is moved from one position to another via the switch. One of the reasons why it is known as snap action switch is the fact that it makes use of normally open and normally closed inside of it. Through this feature, it becomes possible to have devices switched on/off. Every micro switch has a lever. Once this is moved, you will hear the sound of the switch snapping back and forth. Once this happens, it becomes possible for power to be changed quickly between two devices.
Micro switches are existing to ensure that power is switched on/off between devices in an automatic manner. They have also been built to help devices function at the very best by detecting whether conditions are ideal or not. This is very obvious in washing machines where these electrical switches are included. They have the function of detecting whether the door has been closed properly to enable the machine work effectively. Furthermore, micro switches are also used in sliding doors. You will also find them in heavy duty sliding doors which are used in official environments.
In order for connections to take place between devices, 3 connections points are usually used in micro switches. These are known as “Common”, “Normally closed”, and “Normally open”. These are mostly designated as C, NC, and NO. Contacts between these connection points become possible through the lever. When the lever is pressed, there is a spring which helps to ensure the points are contacted. Through this function, it becomes possible for the device to be turned on/off.
Whenever the switch seems to be touching the Normally Closed point, it can be said to be in a “resting state”. In this instance, there is nothing that is pushing against the activating arm. However, once the lever is pushed and the arm gets moved, the switch will quickly change position. At this point, it will be making contact with the Normally Open contact point. The bottom line is that a micro switch won't function unless you decide to use its lever. Through this, it becomes possible for there to be contact between the 3 points outlined above.
How to testing a micro switch?
There is a mistake that people usually make when trying to test their micro switches. This is the fact that they always try to move the lever with their hands in order to check whether it is working or not using a meter. This can make you get some false results. The best is to ensure such switch is in its resting state.
That is to say, allow the lever to remain in its original state before deciding to carry out such test. This helps you know whether the switch is working or not. After testing it in such state and you are sure it is working based on the results shown, that is when you can run another test while the lever has been changed from its resting state.
The above details will definitely help you get the best from any micro switch. Even if you don't grasp the concepts being explained, reading the details over again won't be a bad idea. Whatever the case may be, it is important you always exercise utmost caution while working with electricity. In case you don't have the slightest idea about how electricity works, it is recommended to hire the services of a repairer in order ensure such micro switch is tested in a professional manner. This will ensure you are safe from any danger of electric shock.