This topic is very interesting on it very much any device and it is very contradictory.
In nature, there is a unique alternative source of energy , environmentally friendly, renewable, easy to use, which is still nowhere to be used. This source - the electric field of the Earth .
The following describes a method of obtaining energy from this source. The method is based on the properties of the electric field of the Earth and the basic laws of electrostatics.
In the scientific and pseudo-scientific press for many years of tense debate about the reality of cold fusion and the generation of heat in devices of all sorts, the amount of which exceeds the amount of electrical or mechanical energy supplied to these devices from outside ( Overunity Generators).
The resonant power amplifier power frequency - it is a static electromagnetic device designed to enhance the capacity of power frequency of 50 Hz.