DC power outlet using the skill is a lot of friends ask, how can we can extend the service life, how to protect the DC power outlet, from the below we introduce to you a few points, can be a good solution to this problem.
The use of DC power sockets
Selection of DC power sockets
Take "30V/0.5A" as an example to show that the current of the socket is 0.5A, and the insulation voltage level is 30V.
The most important thing here is "0.5A", which is the maximum safety current of conductor design. More than 0.5A will heat, oxidize, and fail.
30V is the index of insulation material, and there are differences between them.
How to weld the DC power outlet
To scrape the oxide of the position to be welded, a few solder paste should be used less. It is best to use the 100W soldering iron to weld quickly, and then blow air with the mouth so that the colloid is melted and cooled immediately.
DC plug interface positive and negative level
The outlet will be marked (and some voltage is indicated).
DC power outlet to eliminate sparks
If it is a direct current, it is very good to do, you can add a three pole switch circuit behind the socket of the board, open the power by a small button switch and open the power. When the power is inserted, there is no current without a spark. Generally, the PNP transistor is the simplest, but a three pole tube or a MOS tube with large current should be selected. That is to choose relay, switch power through button switch relay, but relay should be chosen well, and if we communicate, we must use SCR.