Patent ID: 8202271

Claim:
An electrosurgical generator comprising: an RF output stage configured to generate at least one sinusoidal waveform suitable for at least one electrosurgical mode, the RF output stage including first and second connections, the first connection including a first switching component and a first parallel inductor-capacitor resonant circuit and the second connection including a second switching component and a second parallel inductor-capacitor resonant circuit, the first parallel inductor-capacitor resonant circuit being configured to produce a first half-sinusoidal waveform and the second parallel inductor-capacitor resonant circuit being configured to produce a second half-sinusoidal waveform, wherein the first and second switching components are configured in a 180 degree out-of-phase relationship to operate at a predetermined frequency based on a phase-correlated dual drive signal, wherein the RF output stage further includes a transformer having a primary winding and a secondary winding and a series inductor-capacitor resonant circuit, the series inductor-capacitor resonant circuit and the transformer configured to generate a sinusoidal waveform.