When it comes to switch products, we generally think of switches that can turn on lighting devices. They all need to be pressed to open or close. In fact, with the development of technology, there is now a touch on the market. The switch can complete the state switching with a single touch. They are used in the manufacturing field of TV sets or in the design process of other electronic instruments and meters. On the one hand, they can be classified according to the principle, and on the other hand, according to the price size. For classification, interested friends can refer to the following to learn about it.
First, what is the working principle of the Tact Switch?
According to the different principles, the tact switch can be divided into two types. One is to use the metal shrapnel to complete the switch-on and off-state switching. The tactile switch has a good feel. When the button is pressed to a certain extent, the ticking sound appears. The other is to use the conductive rubber to complete the switching of the switch on and off state, the switch feels good, but the contact resistance is large, about 10,000 times the previous one.
The structure of the tact switch can be divided into five parts: the cover plate, the button, the shrapnel, the base and the pin. Among them, the button refers to the external force application; the shrapnel is the key component of the tact switch, and the switch is turned on and off by the shrapnel. The force is caused by the change; the pin refers to the connection between the tact switch and the circuit, generally five pins, two or two sets, and one pin for grounding, when the switch is properly stressed, When the four pins are turned on, the circuit is turned on, and when the switch is not pressed by the correct external force, the four pins are not connected to each other, so that the circuit is in the off state.
When we press the button of the tact switch, the shrapnel is deformed by the elastic force to contact the soldering piece, so that the two sets of pins of the switch are turned on, so that the circuit is in a conducting state; and when we withdraw the external force The shrapnel deformation returns to the original state, and the soldering piece is separated, and the two sets of pins of the switch are no longer turned on, thereby causing the circuit to be in an off state.
Second, the touch switch use
Color televisions, black and white televisions, audio equipment, video recorders, video cameras, computers, game consoles, fax machines, walkie-talkies, batons, machine control devices, copying, printers, electronic instruments, meters and other household appliances.
The tact switches described above and described above can be divided into two types according to the working principle, each of which can support the consumer friends to complete the state switching by gently touching, thereby avoiding the trouble caused by pressing, except In addition, the structure of the tact switch is divided into many types, and different components cooperate with each other to achieve a satisfactory effect. Further, we can find that the product can be used in the manufacturing process of printers or electronic instruments, and can also participate in the formation of some sophisticated component products to maximize its value and characteristics.
