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D-Sub connectors, also referred to as D-Shaped connectors, are the standard connector for the majority of peripheral devices in the computer industry. While the structure has remained mostly the same, the wide range of available sizes and styles makes D-Sub connectors suitable for a range of applications. D-Sub connectors come in three major varieties, the most common of which are high-density connectors.

High-density D-Sub connectors are used most frequently, providing a reliable connection between computer peripherals. They consist of two flat, rectangular metal contacts mounted on a metal frame. The rear of the frame holds a flexible plastic shield, with two rows of 7 – 9 pins encased in it. This prevents damage to the pins and wires, as well as dust and dirt from entering the connector.

These high-density connectors are used in all computers, scanners, printers, and digital cameras, and are available in various sizes ranging from the smallest high-density 9-pin version to the standard 25-pin model. Many modern D-Sub connectors feature backplanes, which allow two devices to be interconnected and still have access to each other’s ports.

When choosing a specific D-Sub connector, the primary selection criteria is the application for which it will be used. The choice of connector can be anything from a simple one-way connection to split analog/digital, or high-speed digital signal types. There are also D-Sub compatible systems available for extremely high-speed serial data transmission.

The working principle of D-Sub connectors is relatively simple. The two flat contacts that make up the pins slide into the corresponding sockets, forming an electrical connection. The metal frame holds the contacts in place and also prevents vibration and wear, while the flexible plastic shield protects the pins from damage. Additionally, the electrical connection formed by the pins and sockets ensures that power is transferred efficiently while data is accurately transmitted.

Overall, D-Sub connectors are reliable and cost-effective solutions for many computer peripheral equipment applications. Their wide range of sizes and styles makes them suitable for a variety of applications, while their durable metal frames and flexible shields offer optimal protection for the pins and wires. Furthermore, their simple working principles guarantee efficient power transfer and accurate data transmission.

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