Hi all. This question has been bugging me for a while now so hopefully you can help. I want to know how an electrical load (such as a motor) maintains its power, like when the voltage drops the current increases. I know all the formulas ( in this case P = V x I ) but want to know how it works. At nominal operation the motor is spinning fine and sees a current passing through its terminals. Then there is a voltage drop or dip and so it draws more current. How does it (know how to) draw more current? A motor requires a current to induce a magnetic field and it (if it had a brain) does not know anything about the source. All it wants is a particular current to produce the magnetic field. Where does the voltage relationship come into this. I have searched and searched but all I can find is it maintains P = V x I, but not how it does this. Thanks, Mark.