Several common connection introduction introduction

(1) Wiring terminal

The wiring terminal is mainly for the connection of the wires. In fact, the wiring terminal is a metal piece sealed in the insulated plastic. There are holes that can be inserted in both the metal sheet. The two wires need to be connected, sometimes they need to be disconnected. At this time, they can be connected to them with terminals, and they can be disconnected at any time without having to weld them or entangle them together, which is convenient and fast. There are many types of wiring terminals. Commonly used plug -in wiring terminals, PCB -type wiring terminals, wiring terminal rows, screw fixed wiring terminals, grid board wiring terminals, etc.

Features of wiring terminals: diverse pin spacing, flexible wiring methods, suitable for high -density wiring demand; maximum current of wiring terminals reaches 520 A; suitable for SMT production processes; can be used for re -welding, the highest temperature resistance reaches 300 ℃ ; You can also use different accessories to expand functions.

(2) Audio/video connection plug -in

① The two -core and three -core plug socket: It is mainly used to transmit signals between various equipment and input plugs as the input signal of the microphone. The two -core plug socket is mainly used for the connection of a single -channel signal. The three -core plug socket is mainly used for the connection of stereo signals. According to its diameter, it is divided into three types: 2.5 mm, 3.5 mm, and 6.5 mm.

② Lotus plug socket: It is mainly used in audio equipment and video equipment. It uses the input and output plugs of the line between the two.

③ Caval plug (XLR): It is mainly used for the connection between the microphone and the amplifier.

④ Five -core socket (DIN): It is mainly used for the connection between the card recording seat and the amplifier. It can concentrate the stereo input and output signal on a socket.

⑤ RCA plug: RCA plug mainly uses dry equipment towels to transmit a signal.

(3) Rectangular connector

The rectangular plug and socket are made in the rectangular plastic shells with good insulation performance. The number of contact between this plug and the socket varies by dozens of pairs. The arrangement method has double row, three rows, four rows, etc. Due to elastic variables in each contact, the positive pressure and friction produced by the contact can ensure the good contact of the contact. In order to improve performance, some of them have gold -plated layers or silver -plated layers in contact with them.

Rectangular plugs, sockets can be divided into pins and bilateral springs; those with shells and non -shells; lock -up and non -locking types are often used in low -frequency low -voltage circuits, high and low -frequency hybrid circuits. More in equipment and instruments for radio.