KansaiRobot
Member
Hello and thanks always.
I would like to ask a question related with what the title says.
In the past I have built systems which use two voltages. Say 12V and 5V. For that I used either two power sources, or one power source that gives both voltages. Of course the ground is joined.
I have also built systems of 5V only which are USB powered, meaning I dont use any power source, just the USB gives the 5V that my microprocessor needs.
My question is, what happens if I want to built a system in which the 5V part is given by the USB but the 12V by a power source. I am building this right now but, is there no problem that the grounds are joined?? I dont want to burn anything ....
I would like to ask a question related with what the title says.
In the past I have built systems which use two voltages. Say 12V and 5V. For that I used either two power sources, or one power source that gives both voltages. Of course the ground is joined.
I have also built systems of 5V only which are USB powered, meaning I dont use any power source, just the USB gives the 5V that my microprocessor needs.
My question is, what happens if I want to built a system in which the 5V part is given by the USB but the 12V by a power source. I am building this right now but, is there no problem that the grounds are joined?? I dont want to burn anything ....