#$%^&*AU2011200472B220150611.pdf#####SQUARE WAVE FOR VESSEL SEALING Abstract A square wave generator (30) suitable for use with an electrosurgical device (2) is provided. The square wave generator includes a voltage source (102) configured to output a waveform and a comparator (104) operatively coupled to the voltage source and configured to output energy in the form of a square wave. The generator may also include at least one sensor (122) configured to sense an operational parameter of the energy outputted from the comparator(104) and to provide a sensor signal corresponding thereto and a controller (124) adapted to receive the at least one sensor signal and in response thereto control the voltage source. 3323827_11/4 1 4 20 ELECTROSURGICAL 2 GENERATOR FIG. 1A 20- 3 ELECTROSURGICAL 108 GENERATOR FIG. l B
