A pulse tool, in particular a pulse nutsetter, has a drive unit and a pulse unit driven by it. A limiting circuit is provided to adjust the output of the quantizer of the delta-sigma modulator according to a given range of values. The C-shaped portion may include an outer surface configured to be rotatably received in an inner surface of a retainer bushing. The filter is configured to produce a piece-wise linear approximated sinusoidal output waveform from the output signal.