Microswitch working principle and the use of precautions
Microswitch working principle and the use of precautions, microswitch is actually a kind of just a light touch can switch on and off electrical appliances switch. This kind of switch has now been widely used in our computer mouse, car brakes and so on. Follow me to see how the microswitch works and the precautions to be taken.
Micro switch working principle and the use of precautions 1
First, what is a micro switch
Micro switch is a tiny contact spacing and snap-action mechanism, with the specified stroke and the specified force for the switching action of the contact mechanism, covered by a shell, the outside of the drive lever of a switch, because its switching Contact spacing is relatively small, so the name micro switch, also called sensitive switch. The electrical symbol is SM.
2. Principle of operation of microswitches
The external mechanical force is applied to the action reed through the drive element, and when the action reed is displaced to the critical point, it generates an instantaneous action, which makes the dynamic contact at the end of the action reed and the fixed contact quickly connected or disconnected.
When the force on the actuator element is removed, the action reed generates a reverse action force, and when the reverse travel of the actuator element reaches the action threshold of the reed, the reverse action is completed instantaneously. The contact spacing of the micro switch is small, the action stroke is short, the pressing force is small, and the on-off is rapid. The action speed of its movable contact is independent of the action speed of the transmission element.
Three, the use of microswitches
Such as computer mouse, car mouse, automotive electronics, communications equipment, military products, test instruments, gas water heaters, gas stoves, small household appliances, microwave ovens, rice cookers, floating equipment supporting, medical equipment, building automation, power tools and general electrical and radio equipment,
1.
2. Soldering
When soldering by hand, use a thermostat with a temperature adjustment of 320 degrees Celsius max to complete the work in 3 seconds, and be careful not to exert force on the terminals during the work.
3. We recommend using a low power circuit type (Au clad contacts) for use with small currents and voltages.
4. Environment
This article describes in detail about those things for the micro switch. If you want to use the micro switch, if you want to buy more suitable for their own light touch switch, you had better consider the micro switch, before you buy you had better understand the content of this article.
How to remove the micro switch?
Microswitch is a switch with a tiny contact interval and snap-action mechanism, with the specified stroke and the specified 'force for switching the dynamic action of the contact mechanism, covered with a shell, its external drive rod of a switch, because of its switching contact spacing is relatively small, it is called a microswitch, also known as a sensitive switch.
With a soldering iron and tin wire, the three feet behind the microswitch are connected, so that when heated again, those tin can be heated at the same time to achieve the purpose of melting together, even after a good tin, a small pause will be a little bit, and then use gold tweezers to add the top of the microswitch, and then again behind the three feet of the weld, you can move the iron head a little bit horizontally, the three feet of the tin is melted, and then gently to the micro switch Bend a little in front, so that the three feet behind the microswitch elevated 0.3MM or so, but do not overdo it, and then quickly and repeatedly in turn to heat the microswitch in front of the two soldering points, while the soldering point melted, while the microswitch behind the direction of a slight bend in the angle of the microswitch in front of the two feet just detached from the pads, the strength of the light, and finally heated the back of the three feet of soldering points, bent forward at an angle, the micro switch can be removed without any problems. Microswitch removal can be taken down smoothly.