745931-3

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D-Sub, D-Shaped Connectors & Contacts are the type of electrical connectors most commonly used for connecting various computers, peripherals and electronic components. They are also known as DB-type connectors, D-Subs or just DBs.

The 745931-3 D-Sub connectors are part of the D-Subminiature connectors family. They have 25 pins in two rows and are widely used for a variety of applications including serial and parallel communications, audio and video signals. The connector is designed to provide an effective way of securely connecting computer components using flexible, metal-shielded cables with plug-in contacts.

In terms of application field, the 745931-3 is mainly used in communication systems such as RS-232 and RS-485. It can also be used for data transfer, analog and digital signals, or power delivery. As for audio and video signals, it is used to connect plasma TVs, DVD players, stereo systems, and other hi-fi audio and video equipment.

Regarding the working principle of the 745931-3 connectors, it is based on metal-to-metal contacts that have been pre-loaded with spring tension. Connecting two cables with these connectors involves pushing the plug-in contacts together, creating an electrical connection between the two cables. This ensures that a safe and reliable electrical connection is established between the two components. The metal-to-metal contacts also ensure that the connection remains reliable and robust even when exposed to high temperature or humidity.

Another important function of the 745931-3 connectors is that they help protect the cables and the components from electromagnetic interference (EMI). This is done by the metal-to-metal contacts, which act as a shield for the electrical connection. By blocking any outside interference, these connectors help ensure that the connection between the two cables remains secure and reliable.

In summary, the 745931-3 connectors are part of the D-Subminiature family of connectors and are used for various applications such as data transfer, audio and video signals, and power delivery. They work by creating a secure electrical connection between the two components by pushing the plug-in contacts together. The metal-to-metal contacts also help protect the cables and the components from interference, ensuring that the connection remains reliable even in harsh environments.

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