Patent ID: 6958063

Claim:
A plasma generator for generating a cold plasma jet beam comprising a frequency tunable oscillator; a power end stage connected to the frequency tunable oscillator, wherein the oscillator controls a power end stage; a resonance transformer connected directly to the power end stage for delivering a high voltage radio frequency; a phase comparison stage having a first input and a second input, an automatic frequency control circuit connected to the phase comparison stage; an oscillator connected to the automatic frequency control circuit, and connected to the first input of the phase comparison stage, wherein the power end stage operates as a switch and is connected to the second input of the phase comparison stage; wherein the automatic frequency control circuit ( 9 ) tunes the frequency of the rectangular pulse voltage ( 4 ), wherein the secondary winding of the resonance transformer ( 6 ) delivers a high sinusoidal radio frequency voltage with values of from about 2000 to 4000 volts.