The invention relates to a high-frequency generator with automatic power control for tissue cutting and for coagulating in high-frequency surgery. The power control in the "cutting" mode of operation is effected with an arc control system for keeping the arc burning between the surgical probe and the...http://www.google.com/patents/US5108391?utm_source=gb-gplus-sharePatent US5108391 - High-frequency generator for tissue cutting and for coagulating in high-frequency surgery