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D-Sub, D-shaped connectors and contacts are commonly used on a variety of equipment and systems, from broadcast equipment used in television, audio and video production, to computers, telecommunications equipment, and industrial machinery. D-sub connectors provide reliable connection and are often used in applications where reliability is of primary importance. In many applications, D-sub connectors are specified for both electrical and physical reasons.

The most popular D-sub connector is called the DB15. This type of connector is used to interface with input/output devices, such as keyboards, video cards, scanners and other peripherals. It consists of two main components – a mating shell and a contact cavity. The mating shell is usually made of plastic and consists of an outer hexagonal shape with a circular center. The contact cavity is typically made of metal and designed to mate with male contacts. The connector may contain two, three, five or more pins.

D-sub connectors have two basic working principles. First, the electrical connection between two or more pins is made via a spring-loaded contact, also called a “contacts”. This contact is capable of carrying electrical current in both directions without shorting the circuit. The second working principle is the “damping” function. This part of the connector acts as a cushion in order to minimize physical shock or vibration, which could cause damages to the components being connected.

D-sub connectors are also known for their durability. The mating shells and pins are usually made of corrosion-resistant metals, such as nickel-plated steel and brass, which means they are more resistant to wear and tear than other types of connectors. Furthermore, the contact cavity has grooves that help ensure tight electrical connections. This ensures that D-sub connectors are less likely to suffer from contact corrosion or failure over time, even in harsh environments.

Because of their reliability, D-sub connectors are widely used in both commercial and industrial applications. The most common applications include: computer and server connectors, medical device connectors, telecommunications equipment, alarm systems, audio visual equipment, consumer electronics and more. D-sub connectors are also commonly used in the aerospace and military industries, due to their high performance, reliability and durability.

In summary, D-sub, D-shaped connectors and contacts are reliable, durable and widely used in a variety of different commercial and industrial applications. They are designed to provide strong electrical connections that are resistant to corrosion and failure, as well as to protect components from physical shock and vibration. For these reasons, D-sub connectors are a great choice for applications where reliable connection and protection are paramount.

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