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D-Sub, D-Shaped Connectors - Contacts are a type of electrical connector consisting of two or more parallel rows of contacts that form a “D” shape when viewed from the side. The D-Sub contact system is one of the most common and versatile types of electrical connections and is used in a wide variety of applications.

The D-Sub contact typically consists of a plastic insulator, usually made from polycarbonate, filled with metal contacts and mounted on a plastic or metal shell. The contacts are usually made from copper or brass and may be either male or female. The contacts are held in place by a “contact-block” which is usually made from plastic or metal and is attached to the insulator. The contact-block may also have additional features such as key-pins or alignment pins to ensure that the connector is correctly assembled.

The D-Sub contact systems are typically used to connect two or more devices or components together. They are commonly used in aircraft, automobiles, computers, industrial machinery, and other electronics devices. The contacts may be used to provide power, data, or signal transfer between devices. They are also used in the connection of two or more electrical circuits, providing an efficient and reliable way to transfer signals between them.

D-Sub connectors are available in a variety of sizes and contact configurations, ranging from two to seven contacts. The most common contact size is 9-pin which is used in applications such as computer mouse and keyboard connections. The smaller 2- and 3-pin connectors are often used in small electrical devices such as cars, robots, and medical equipment. The larger 8- and 9-pin connectors are commonly used in data communication, industrial automation, audio/visual equipment, and computer networking.

The working principle of a D-Sub contact system is simple yet effective: the pins on either side of the connector are held together by a plastic or metal contact-block. When the connector is plugged into a device, the pins are forced together, creating the electrical connection. The metal contacts provide a low resistance connection, ensuring that a proper signal is transferred between the two devices. The contact-block also helps to protect the contacts from physical damage. The contacts are also insulated from the environment, ensuring that any signals passing through them are not disrupted.

The D-Sub contact system is an excellent choice for electrical connectors and is used in a wide variety of applications. Its versatility and reliability make it a popular choice for both professionals and hobbyists alike. With its varied contact configurations and sizes, it is easy to find exactly the connector you need for your project.

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