How to connect the four feet of the touch switch?
The four foot touch switch cannot be self-locking during use, but the user only needs to press it once, and the signal of the four foot touch switch will change. How to connect the four corners of the touch switch is the key knowledge of electricians
First, adjust the multimeter to the diode
Second, first measure the four pins to determine which pin is conductive and which pin is broken
Third, press the button, measure the pin, and judge which pin is conductive and which pin is broken
Fourth, start to break, and press the conductive foot as the two corners for welding.
Overview of touch switch products
The light touch switch is also called the key switch. When it is used, the switch function is closed and connected by applying pressure to the operating direction of the switch under the condition of satisfying the operating force. When the pressure is released, the switch is disconnected. Its internal structure is connected and disconnected by the change of the force on the metal spring. The light touch switch is composed of insert, base, spring, button and cover plate. The waterproof light touch switch is added with a layer of polyimide film on the spring.
Principle of pin diagram of touch switch
1、 A small touch switch can control the operation of the entire electronic equipment. What is the principle of this? To understand the structure of the touch switch, it consists of a cover plate, a button, a spring, a base, and pins from top to bottom. The button is the place where external force is applied through the cover plate, and the spring is the core element of the touch switch. The pin refers to the connection between the touch switch and the circuit, which generally consists of five pins, two pins in a group, the fifth pin is grounded, and four pins are connected. When external force is applied to the switch, the switch is connected, When the external force is applied, two pairs of four pins are disconnected and the switch is disconnected.
2、 The on-off of the light touch switch is realized by the change of the force on the metal spring. When the switch button is pressed, the spring will deform under the action of external force and contact the solder strip downward, making the two groups of pins of the switch open, making the circuit appear to be connected. After the external force is exited, the deformation of the spring strip returns to the original state. When the solder strip is disengaged, the two groups of pins of the switch will no longer be connected, and the circuit appears to be disconnected.
The on-off of the light touch switch is realized by the change of the force on the metal sheet. When the switch button is pressed during use, the metal sheet will deform under the action of external force and contact the solder strip downward to make the two groups of pins of the switch connected, so that the circuit will be in a conductive state. After the external force is removed, the deformation of the spring piece returns to the original state. When the welding piece is detached, the two sets of switch pins are no longer connected, and the circuit is disconnected. This is the working principle and circuit formation of the touch switch.