Apparatus for leakage control and method for its use

摘要: Apparatus and method find leakage due to tissue load or transients has active return electrodes for RF energy sensed by transformers a circuit that finds at more than two thousand times per second frequency dependent on the phase shift between voltage current. Software feedback manage V rms reduce increase crest factor, which is divided peak voltage, pulse width modulation of drive. Voltage current changes, angle θ, are compared threshold, when greater, differences signals examined increased. The currents greater maximum while in coagulation mode, drive reduced maintain wave peaks preset value thereby reducing allowable maximum. Reducing duty cycle output increases factor. When cut bipolar limit level. θ less with reduced.