In the first part of this TechNote, the first two generations of triangle-wave generator loops were presented: the foundational concepts at the heart of function generator (FG) technology. This TechNote extends further into interesting extrapolations, such as differential triangle-wave generators, including one that automatically controls waveform symmetry for low-distortion sine-waves. Another is a sweeping FG scheme that implicitly generates exponential sweeps for Bode magnitude plots. Sine shapers in earlier FGs were resistor-diode piecewise-linear circuits that have been supplanted by translinear function generation. Also, multiple function-enhancing circuits are added to FG instruments.
