The connector is a kind of component that our electronic engineering technicians often contact; Its role is very simple: in the circuit is blocked or isolated between the circuit, set up a bridge of communication, so that the current flow, so that the circuit to achieve the intended function. Connectors are an indispensable part of electronic equipment. If you follow the path of current flow, you will always find one or more connectors. Connector forms and structures are ever-changing, with the application object, frequency, power, application environment, there are a variety of different forms of connectors; For example, the connector for lighting a light on a court is very different from the connector for a hard drive or the connector for lighting a rocket. But no matter what kind of connector, to ensure that the current smoothly continuous and reliable flow.

Why you need a connector

Imagine if there were no connectors: At this time between the circuit to use continuous conductor permanently connected together, such as electronic devices to be connected to the power supply, must be connected to the two ends of the wire, and electronic devices and power through some method (such as welding) fixed; In this way, both for production and use, have brought a lot of inconvenience; Connectors are now widely used. So, when did connectors become so widely used? The demand for connectors is said to have expanded during World War II in the 1940s. Previously, wires were either wound together and welded (wrapped around the metal to improve its grip) or screwed in place. However, in the field, where the clock is ticking, mass connections become necessary for efficient assembly and production of equipment and machines, and suddenly demand increases. Imagine if there were no connectors? At this time between the circuit to use continuous conductor permanently connected together, such as electronic devices to be connected to the power supply, must be connected to the two ends of the wire, and electronic devices and power through some method (such as welding) fixed; In this way, both for production and use, have brought a lot of inconvenience.

Connectors have a variety of uses, but their common purpose is to "transmit power correctly." If the power cannot be transferred, the voltage drops, or the signal arrangement changes, then the connector is useless. In addition, since electricity and signals are invisible to the naked eye, measuring instruments must be used to measure... That's going to be a problem. The "correct transmission of power" is the most important function of the connector, which is what we should pay attention to during the design and production process.

It is important to transmit power correctly. (1) The connection between the cable and the connector terminal, (2) the connection between the substrate and the connector terminal, (3) the contact part between the connectors.

Because it is connected through a connector, it can be added by pointing to a memory such as a computer, and can be repaired by replacing damaged parts. Like this, connectors are so versatile that they're all around us. Take smart phones as an example. Dozens of interface connectors, internal connection connectors, coaxial connectors, etc. are used in a single smart phone. Wireless headphones and electronic cigarettes also use subminiature connectors. Take car batteries; Assuming that the battery cable is fixed and soldered firmly on the battery, the automobile manufacturer will increase the workload for the installation of the battery, increasing the production time and cost; When the battery is damaged and needs to be replaced, the car will be sent to the maintenance station, the old one will be removed and the new one will be welded again, for which more labor costs will be paid; With a connector you can save yourself a lot of trouble. Buy a new battery from the store, disconnect the connector, remove the old battery, put in a new battery, and reconnect the connector. This simple example illustrates the benefits of connectors; It makes the design and production process more convenient, more flexible, reduce production and maintenance costs; In addition, connectors are not only used in homes, but also widely used in cars, electric cars, power stations, power stations, factories, robots working in factories and other corners of society.

Brief classification of common connectors

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