Recent content by Geobio

How can I find the "live" wire (household plug)? After playing with an electrical socket (with caution), I realized there is 120v between the black and ground wires. However, the white is supposed to be "live", black is "neutral", and copper is "ground". Since there is 120v between black and...

I am trying to adjust the output voltage of my 12v DC adapter. Is it possible to wrap the wires of the adapter around a toroid in a closed circuit, and then wrap another wire around the toroid to have the output voltage of this wire decreased, and the current increased? Example...