1. Tuning fork refers to the one with two cards on the inner wall of DC head, which has better contact.
2. Straight insertion refers to a cylinder with smooth inner wall.
3. The connection mode of DC plug is that two fork contact spring pieces are located in the center of the base (DC head of tuning fork) or a smooth hollow metal cylinder is located in the center of the base (DC head inserted directly), which are arranged vertically and horizontally and are not connected with each other.
There is also a hollow metal cylinder exposed outside the cylinder of the insulating base (there is no difference between the metal connection part exposed by the tuning fork DC head and the straight-in DC head), so that it can be connected with the inside and outside of the socket to supply power for the products it supplies and make it work normally.
4.DC plugs and DC power sockets are generally used in audio-visual products, digital products, monitoring products, communication products, household appliances, security products, toys, computer peripheral products, fitness and health products, medical products, video products, IT products and other products.