A high-frequency surgical generator for generating high efficiency outputs that can be operated in resonance over a wide load resistance range. The high-frequency surgical generator includes a first stage circuit for generating high-frequency power and a second stage circuit coupled to the first state circuit. The second stage circuit includes an input and an output and a series resonant circuit located between the input and the output. The second stage circuit further includes an inductor that is switched parallel to the input and a capacitor that is switched parallel to the output.
