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D-Sub Connectors

D-sub connectors are a type of electrical connector, commonly referred to as a D-subminiature connector. They are often used in computers, communications equipment, and other applications. The D-sub comes in many sizes and variations, providing the flexibility to interface between common signal lines such as telephone and Ethernet. This article will discuss the 749877-9 application field and working principle.

Application Field

The 749877-9 D-sub connectors are mainly used for connecting electronic equipment such as computers, communications equipment, audio and video equipment, or for controlling other devices. They are commonly used in government, military, and industrial environments for various applications. The 749877-9 has two rows of 9-pin connectors, which can be used for connecting with different types of devices. The main components of the connector include the casing, the contact steel, and the insulation.

The 749877-9 connectors feature an easy connection, improved shock and vibration resistance, higher density, and lower contact resistance. They can also be used for data transmission applications as the connection between a controller and a terminal, or between two computers. This type of connector is also often used in automotive, medical, and aerospace applications.

Working Principle

The 749877-9 D-sub connectors consist of two rows of 9 pins arranged in a "D" shape. The contact steel forms a ridge between the two rows and makes contact with the corresponding pins when the connector is connected. These contact points are connected to terminals hidden behind the contact steel and shielded by round insulation sleeves. The contact steel is made of high-quality materials to ensure the stability of the connector and reduce contact resistance.

When connecting 749877-9 D-sub connectors, the socket at the end of the cable should be plugged into the corresponding connector. The pins of the connector will be in contact with the corresponding terminals of the socket and the contact steel of the connector will be in contact with the contact points of the socket. This will create an electrical connection between the devices.

The 749877-9 D-sub connectors are easy to install, reliable, and durable. They are an ideal connection solution for various applications such as computers, communications equipment, and other devices. They can also be used for data transmission applications and are highly resistant to shock and vibration.

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