Where " Y " is the internal inductance of the coil, defined by the distribution of current . " Y " is 0 for high frequency currents carried mostly by the outer surface of the conductor, and 0.25 for DC currents distributed evenly throughout the conductor.
12.
In August 1917, Tesla explained what had happened in " The Electrical Experimenter " : " As an example of what has been done with several hundred kilowatts of high frequency energy liberated, it was found that the dynamos in a power house away were repeatedly burned out, due to the powerful high frequency currents set up in them, and which caused heavy sparks to jump through the windings and destroy the insulation !"
