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D-Sub, D-Shaped Connectors - Contacts, also known as pin and socket contacts, are the physical part of the electrical connector. They connect the electrical devices together, forming a connection including both electrical and mechanical elements, which allows current to flow between the two devices. D-Sub Connectors are generally composed of two or more varieties of female connectors and male connectors, which mate together to form the connection.

The D-Sub connector is a common type of electrical connector for electronic circuits. It features a rectangular housing with multiple pins or sockets to which wires can be attached. This gives the D-Sub connector a distinctive D-shaped profile. D-Sub Connectors are used in a wide variety of applications ranging from consumer electronics to industrial electronics. Common uses of D-Sub Connectors include connecting two computers, linking a keyboard and a monitor to a computer, or connecting a printer to a computer.

The D-Sub Connector includes two parts: the shell and the contacts. The shell is the outside part of the connector. It serves to hold the contacts and keep them in position, protect them against damage, and provide a means of mounting the connectors. The contacts are the inside parts of the connector that make the electrical connections. They are typically made from metals such as brass or copper and must be designed to withstand certain current and temperature limits, as well as mechanical stresses.

The most common type of D-Sub Connector is the pin-and-socket type. This type of connector utilizes two mating halves that are held together by a set of screws. Each half contains a series of metal pins or sockets that fit into the corresponding holes in the other half when the two are connected. In this type of connection, the electrical connection is made when the pins on each half passes through the matching hole in the other half.

Another type of D-Sub Connector is the crimp contact type. This type of connector utilizes a tab to hold the contacts in place. The contact is then crimped onto the tab until it is secure in place. This type of connection provides more flexibility in terms of size and number of pins, as well as providing more reliable electrical connections. Additionally, this type of connection is also useful for higher voltage applications where a higher degree of insulation is needed.

D-Sub Connectors are usually available in a variety of sizes and configurations. These include 9-Pin, 15-Pin, 25-Pin, and 50-Pin connectors. The number of pins or sockets in the connectors lessens as the size of the connector increases. For example, a 9-Pin connector typically has nine pins or sockets, while a 25-Pin connector has 25. The size and configuration of the connector depends largely on the application it is being used for.

In addition to the types of connectors discussed above, there are also a few other types of D-Sub connectors available. These include a number of midget and mini types of connectors that are smaller than the standard D-Sub Connectors. These types of connectors are generally used in more compact applications such as mobile phones and other handheld electronic devices.

The working principle of D-Sub connectors is fairly simple. In the applications mentioned above, the two parts of the connectors are joined together so that current can flow from one to the other. Typically, the pins or sockets on the male side are inserted into the corresponding holes on the female side, forming an electrical and mechanical connection. In order for the electrical connection to be successful, the metal pins and/or sockets must be in firm contact with the contact on the other half. If the connection is loose or unclear, the electrical connection will not be as reliable as it should be.

The design of D-Sub Connectors makes them a popular choice for a variety of applications and industries due to their strength and reliability. They are often the preferred choice due to their small size, ease of use, and the ability to mechanically and electrically connect in a secure manner. This gives them an advantage over other types of electrical connectors and makes them ideal for a wide range of applications.