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Terminals are a type of electrical connector that are used to make a joint between two or more electrical components. The terminals can be of different types depending on the application, such as PC pin connectors, single post connectors, etc. This article aims to explain the application field and working principle of terminals in different scenarios.

In the 1960s, as the electrical engineering industry gained a foothold and established a standard of proper terminal connectors, manufacturers began to manufacture connectors designed for specific application fields. These terminals were used in two ways. Firstly, they were used to connect different components of an electrical system together. Secondly, terminals were also used to perform functions like controlling currents, voltages, and signals within the electrical system.

The type of terminal connector depended largely on the application. For instance, the simplest type of terminal was a ‘snap-in’ connector. This type was terminally pre-wired and was used to connect two or more wires together. These connectors had two contact pins that fit into two female holes. The contact pins then fit precisely together and required no other tool or fitting to make them stay in place.

PC pin connectors, also known as shrouded connectors or ‘jumper plugs’, were designed for high-speed applications. This type of connector has two pins fitted to a plastic housing. The pins are inserted into two holes on the housing and fixed in place using small screws. The pins fit snugly into the holes, allowing electrical connections to be made without the risk of them loosening or becoming disconnected.

Single post connectors are widely used for attaching electrical wires in addition to PC pin connectors. This type of connector consists of a single post with a female head. Two or more wires are attached to the post and secured by a crimp. Single post connectors may be fitted to two holes in the housing or designed to be plugged into a mating connector on the component.

Terminals are designed to provide two important functions. The first is to provide a safe electrical connection between the components. This is accomplished by the use of contact pins in the connectors, which ensures that the contacts remain current. The second function is that terminals also provide insulation against electrical shocks and other potential damage. This is accomplished by the use of an insulating material, such as PVC covering on the terminals.

The application field and the working principle of terminals depend on the type of electrical system being used. For instance, in the audio/video equipment, the terminals must be capable of handling high voltages, while for automotive applications, the terminals must be designed with safety in mind so as not to cause any electrical accidents.

In conclusion, terminals are electrical connectors that are used to make electrical connections either by snapping into place, using PC pins, or using single post connectors. Depending on the application, these terminals must be designed with safety and effectiveness in mind. Their use in different applications ensures that the electrical system is both durable and reliable.

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