Patent ID: 7336038

Claim:
An apparatus for converting a direct current (DC) signal into an alternating current (AC) signal, comprising: a network of one switch for generating an AC signal from a DC signal, the AC signal being generated by the one switch of the network periodically opening and closing; filtering means being coupled between said network of the one switch and a load, said filtering means filtering the AC signal delivered to said load, wherein said filtering means includes: a transformer having at least one primary winding that receives the AC signal from said network of at least one switch and having a secondary winding that is coupled to said load; a diode being connected to the at least one primary winding of said transformer; at least one capacitor being in series with the at least one primary winding of said transformer, wherein the at least one capacitor is operable to store energy to be delivered to the secondary winding of said transformer; and impedance means being in series with the second winding of said transformer, wherein the impedance is operable to resonate to the at least one primary winding of said transformer and said network of at least one switch.