The present invention provides a DC to AC converter including a device enabling separation of electric current into a positive portion of the circuit and a negative portion of the circuit, each portion of the circuit including an electronic switch, wherein one portion of the circuit is adapted to produce a wave form in a positive half cycle, the second portion of the circuit is adapted to produce a wave form in a negative half cycle, the voltage of the output current is fed to a polarity switch as feedback to change the polarity, and wherein the carrier duty cycle is adapted to change from 0 to 100 percent in each polarity.