If you float the ground, it became DC. But, you will have voltage peaks and you dont want that so you need a "regulator" to always have a stable 12v. Or you buy a unit that do both and you dont need to play with the stator. You can find some of those unit on ebay. Or you make one, like i did. I though that the link i posted was an ac/dc converter/regulator, but it wasnt because you need to float the ground. I hope it's clearer now ;-) Envoyé de mon SM-G965W en utilisant Tapatalk