Как отрегулировать ток без нагрузки для источника питания постоянного тока

Dear my friend, Recently the GVDA DC power supply is more and more popular in the market beacuse of high quality and nice outlook.For those who are not very good at operation, there will always be a problem when using it, that is they can  not adjust the current well. now I will introduce to you how to adjust the current without loading. ( for details guide, and refer the attached video.don't worry, it is so easy, after watching video, I'm sure that you will do it well done)The steps are as follows: 1. First pls adjust the voltage to Below 5V2. Let the positive and negative output-terminals of the output ine touch-(Short circuit), then adjust the current if you have any questions, also you can contact with me directly!