Generally speaking, the horizontal line of the switch represents on, and the circle O represents off. Generally, the switch bar has a luminous function, which is convenient for people to get up at night and find the switch in the dark. Generally, the horizontal line of the switch is above the panel. Press it to close and press it to open. A switch (kāi guān) refers to an electronic component that can open a circuit, interrupt the current or make the current flow to other circuits.
The most common switch is an electromechanical device operated by a person, which has one or several electronic contacts. Switches are very common components in our daily life, whether it is industrial instruments, medical equipment, anti-theft equipment, electronic amusement equipment, household appliances, office automation equipment, automobiles, airplanes, ships, computer keyboards and digital converters.
Classification of switches
Children's toys and industrial automation systems, even cutting-edge space technology and military equipment operating systems, all electronic products have switches. Switch types include: wave switch, ship switch, A-type electric shock switch, induction switch, one-way switch, etc. The types of switches are mainly distinguished according to their various performances. According to the number of switches, it can be divided into single-control switches and multi-control switches.
When choosing a switch, you can choose a suitable switch according to your personal needs and installation environment. Generally speaking, the switch panel with good quality is made of copper or phosphor bronze, which has the advantages of good conductivity, good elasticity and long service life, and this material has good stability and is not easy to cause short circuit and spontaneous combustion of wires.