dual supply

So our project is based upon using a solar panel as the main source, but in case it fails, we need the circuit to automatically switch to the government supply which we'll be converting into 12V DC. Can this be achieved directly and simply by a relay circuit like the one in the image? Or we need...

I'm trying to make a biphasic functional electrical stimulator using the circuits in this paper. But I modified it by using MPSA BJT transistors instead of MOSFET. I'm in the middle of developing a Multisim simulation for it. The boost converter worked fine and could climb up/down to around +-40...

Hello, I need to design a linear regulated supply to power an dac output stage based on op amp. It must be a negative + ground + positive one. The problem I encounter is that I don't know wich topology to select between the first and second arrangement. I suppose that the first one induce a...

I see some circuit exemples using oscilators (555 and 74HC14), and some others using isolated supplies or the ICL7660 IC. But all of them have the same problem, current. After some search on youtube, i come to THIS VIDEO , where Wagner uses this circuit: Using the simulations, it works...