Note on Losses in Sheet Iron at Radio Frequencies

In this article there is determined the power dissipated separately by Foucault currents and by hysteresis, in a sheet of iron, on the assumption that there exists a constant angle of lag between the magnetic induction in the sheet and the magnetizing field producing it. There is deduced the thickness which should be given to the iron sheets of apparatus supplied with radio frequency current, in order that the total power expended shall be a minimum. A calculation is made of the angle of lag between the voltage and the current in the circuit of an inductance coil.