The waterproof cable plug is called the efficient energy-saving power supply It represents the development direction of stable power supply It has become a combined product of stable power supply In the case of high-frequency switch, the link components inside the waterproof plug will consume energy. Very low. The power service can reach 70-90%, which is almost twice the waterproof line plug of the linear power plan. The disadvantage of the linear power regulator is that the linear power regulator has good functions. It can adjust the voltage rate, adjust the load, and control the output noise and ripple very much. Besides, the electromagnetic interference of other electronic structures is simple, and the necessary response speed has been processed.

Compared with linear power supply, only inserting waterproof control program will be more messy and noisy than linear power supply. However, an important advantage is that waterproof plug has less functions in terms of size and weight of power function. There are more power supplies, which are made by the power supply under similar conditions, greatly reducing the volume ratio of linear power output power, and also greatly reducing the capital. In this way, we do not know the pin connection of the bracket, so it is easy to save faults In other words, my measurements are always biased, and I cannot suppress the drawn PCB connector.

I think this is one of the differences between China and other countries in the world Not only on the chip, but also on these details, we did not do a good job. Generally speaking, headphones have three-stage plugs The diameter of the plug is usually 3.5 mm and 2.5 mm. Plugs of different diameters correspond to earphone sockets with holes of different diameters. Therefore, from the perspective of system reliability, "male" and "female" should correspond, and pin and pin 4 should be grounded. In this case, when the headset is not inserted, place the channel input on the ground, and the system input is 0.