Patent ID: 7545208

Claim:
A method for signal amplification, comprising the acts of: receiving a main input signal; comparing the main input signal with output feedback signals, and outputting a system input signal; modulating the system input signal for outputting a modulated signal; the act of modulating the system input signal is comprised of fill wave rectifying and modulating the system input signal; coupling the modulated signal with a magnetic field generator winding of an electromagnetic device for generating a modulated magnetic field, which induces modulated electrical signals onto one or more electrical signal generator windings of the electromagnetic device; rotating the electromagnetic device for amplifying the induced modulated electrical signals for outputting first amplified signals; detecting polarity of the main input signal; rectifying the first amplified signals in accordance with the detected polarity of the main input signal for output of second amplified signals; recovering a main output signal by removing a modulated component of the second amplified signals for deriving a load and for providing feedback signal as the output feedback signals to a feedback circuitry.