In addition to meeting general performance requirements, electrical connectors are particularly important in ensuring good contact, reliable operation, and convenient maintenance. Their reliability directly affects the normal operation of aircraft circuits and involves the safety of the entire host. Therefore, the host circuit has very strict requirements for the quality and reliability of electrical connectors. It is precisely because of the high quality and reliability of electrical connectors that they are widely used in military systems such as aviation, aerospace, and national defense. The commonly used classification methods for electrical connectors include appearance, structure, purpose, etc. In various military aircraft and weapon equipment, the use of electrical connectors is relatively large, especially in aircraft. Generally speaking, the usage of electrical connectors in an aircraft can reach hundreds to thousands, involving tens of thousands of circuits. Circular electrical connectors, rectangular electrical connectors. Circular electrical connectors are the most commonly used in military equipment (aviation, aerospace) due to their structural characteristics. Rectangular electrical connectors are more commonly used on printed circuit boards in electronic devices due to their simple structure. According to the connection method: threaded connection, bayonet (quick) connection, card lock connection, push pull connection, straight plug connection, etc; Terminate according to the contact body: crimping, welding, winding; Fix with screws (caps); According to environmental protection, it is divided into environmental resistant electrical connectors and ordinary electrical connectors
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