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D-sub connectors and their corresponding hoods and backshells are a widely used type of connector--especially in commercial and industrial applications. They have a wide variety of uses, from connecting data lines, to audio signals, to power. In this article, we will be looking at the connector types, the application fields and working principles of D-subs and related components.

Types of D-Sub Connectors

D-sub connectors consist of two parts, a male plug and a female socket. The male plug has flat contacts that are exposed, while the female socket is fitted with a jacket and has holes for the contacts. Depending on the size of the connector, the contacts come in 2, 4, 6, 8, 9, 10, 12, 15, and 20. There are also various configurations, including straight, right-angle, and keyed. The most common sizes are the 15-pin, 25-pin, and 37-pin D-sub connectors.

Application Fields of D-Sub Connectors

D-Sub connectors are used in a wide variety of applications, from audio and visual equipment, to computers, to control systems and industrial networks. The majority of these applications are for signal, data, or power transmission. Some of the most popular applications include:

• Data processing equipment
• Computer systems
• Industrial networks
• Telephone systems
• Avionics
• Instrumentation systems
• Audio and video systems

These connectors are also commonly used in automotive and medical applications, as well as military and aerospace applications.

Working Principle of D-Sub Connectors

D-sub connectors are a type of electrical connector that connects two electrical components together. The contacts are inserted into the female socket, and the male plug is connected to the other component. When the plug is inserted, the contacts are held in place by a locking mechanism, providing a good electrical connection. The contacts are protected from dust and moisture by a dielectric material called a hood or backshell, which is fitted over the plug and socket.

The locking mechanism is usually either a cam lever or a bayonet style. In the cam lever, the plug is inserted into the socket with the lever up, and then the lever is poured downwards to lock the contacts in place. In the bayonet style, the plug is inserted into the socket and then twisted to lock the contacts into place.

Conclusion

D-sub connectors, hoods, and backshells are a widely used type of connector, particularly in commercial and industrial applications. They are used in a variety of applications, from data processing and computer systems, to instrumentation and avionics. The contacts are held in place by either a cam lever or a bayonet style locking mechanism and are protected from dust and moisture by a dielectric material called a hood or backshell.

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