Hi, Can somebody answer this question? The induced magnetic field of the secondary coil opposes the magnetic field of the primary. Therefore there is a lower magnetic field on the primary - lower impedance and a lower voltage drop. This results in an increased primary current which will in turn increase the primary bemf and therefore the primary voltage will rise and so goes the cycle. In the article I have read it says the increased primary current results in a larger power draw. I am wondering how can this be when at the same time the primary current is increasing the primary voltage is decreasing. It seems to me the power draw would be constant.