Generator protection technology for digitally generating electrosurgical and ultrasonic electrical signal waveforms

摘要

This is a method for generating an electric signal waveform. The generator includes a digital processing circuit, a memory circuit in communication with the digital processing circuit and defining a lookup table, a digital processing circuit and a digital synthesis circuit in communication with the memory circuit, and a digital-to-analog converter (DAC) circuit including. The method includes generating first and second digital electrical signal waveforms, combining the first and second digital electrical signal waveforms to form a composite waveform, and correcting the composite waveform to form a modified waveform. In addition, the peak amplitude of the corrected waveform does not exceed the planned amplitude value. The method includes generating a second waveform that is a function of the first waveform. The method includes modifying the frequency of the first waveform to form a frequency modified first waveform and combining the frequency modified first and second waveforms to form a composite waveform.