How tact switches work and what they are used for

Publish Time:2022-12-23 Author:jiaxi Views:545

When it comes to switches. We have an impression of switches that can be used to turn on lighting equipment, which require us to press them to turn them on or off. In fact, with the development of technology, there is now a kind of light touch switch on the market, as long as a light touch can complete the state of the switch, they are used in the field of television manufacturing or other electronic instruments and instruments in the design process, on the one hand, can be classified according to the principle, the other side can be classified according to the price of the size, interested friends can refer to the following to learn to understand.
How does a light Tact Switch work?

Light touch switches are divided into two types according to the principle, one is the use of metal shrapnel to complete the switch on-off state switching, this type of light touch switch feel good, press the button to a certain extent accompanied by a ticking sound appears; the other - the use of conductive rubber to complete the switch on-off state switching, this type of switch feel good, but the contact resistance is large, about 10,000 times the previous one.

The structure of the light touch switch can be divided into five main parts: cover, button, shrapnel, base and pins, of which the button refers to the external force applied; the shrapnel is the key component of the light touch switch, the switch is caused by the change in force of the shrapnel; the pins refer to the connection between the light touch switch and the circuit, generally five pins, two groups of two, and a pin for grounding, when the switch is properly stressed, the four When the switch is correctly pressed, the four pins are connected to each other, making the circuit on, while when the switch is not pressed by the correct external force, the four pins are not connected to each other, leaving the circuit in a disconnected state.

When we press the button of the light touch switch, the bullet is deformed by the elastic force down to contact the solder, making the two sets of pins of the switch conductive, thus making the circuit conductive state, and when we withdraw the external force, the bullet deformation returns to its original state, leaving the solder, and the two sets of pins of the switch are no longer conductive, thus making the circuit cut-off state.
Two, light touch switch applications

Colour televisions, white televisions, audio equipment, video recorders, video cameras, computers, game machines, fax machines, intercoms, batons, machine controls, photocopying, printers, electronic instruments, meters and other household appliances.

The light touch switches explained above can be divided into two types according to the working principle, each of which can support consumers by gently touching to complete the state of the switch, thus avoiding the problems caused by pressing, in addition, the structure of the light touch switch is also divided into many types, the same parts cooperate with each other in order to achieve satisfactory results. Further we can find products that can be used in the manufacturing process of printers or electronic devices, and can also participate in the composition of some precision components to maximise their value and characteristics.