- Joined Feb 24, 2020
If I understand this right; A negative voltage is when there are more electrons present in a circuit than the voltage draw from the positive end. phone lines kept at a -48VDC to prevent corrosion to the lines. I'm currently an electronics engineering student at my local community college and attempting to wrap my head around the electron flow model. in order for there to be current there has to be some sort draw from to the positive terminal from the negative. so how a negative voltage is achieved I'm not entirely sure, but this is my best guess at the moment.