electrosurgical generator using multiple resonant circuits inductor / capacitor

An electrosurgical generator (10) comprising: a selection module (76) configured to transmit control signals and adjusting electrosurgical generator in order to produce sinusoidal waveforms suitable for the at least one electrosurgical mode; one RF output stage (30) which generates sinusoidal waveforms for at least one electrosurgical mode, wherein the output stage RF is connected to a supply of DC power including first (32) and second (34) connections, such that the first connection (32) includes a first switch component (48) and a first resonant circuit inductor-parallel capacitor (45), and the second connection (34) includes a second switch component (50) and a second resonant circuit inductor-parallel capacitor (47), such that the first and second switching components (48, 50) are configured to open and close at a predetermined frequency based on a signal correlated dual drive phase, emitted by a drive device, and are in a mutually offset 180 °, the first capacitor-inductor resonant circuit being in parallel (45 ) Configured to produce a first semi-sinusoidal wave (70), and the second resonant circuit inductor-parallel capacitor (47) configured to produce a second form of half sine wave (72), thereby being the output stage RF includes: a transformer (60) having a primary winding (62) and a secondary winding (64) and a resonant circuit inductor-capacitor in series, such that the resonant circuit inductor series capacitor (58) and the transformer are configured to generate a sinusoidal waveform; a switching module (75) which, in response to the control signals, set the first and second half-sinusoidal wave forms, so the sinusoidal waveforms suitable for the at least one electrosurgical mode occur.