Hello Cristian
I use a 12V Power Supply, so i have on the Track 10. max 11V.
I made long tests with the Lego Motors, and i have no Problems with this Voltage.
If you have questions, you can ask me, i also speak german so you can send me a Message :)
I have actually finish my DCC Project, i have build a System that is flexible like Lego :)
I have made three electronic Modules
Bottom is the central unit of openDCC
Middle a booster for powering up the DCC to 3Amps
Upside are the track connections, i made 16x seperate Plugs, when it is connectet to the computer, i can see on which track is a train.
Regards Patrik