Adjustable function generator

  
This low-cost operational-amplifier circuit (A) generates four different functions with adjustable periods. For the components shown here, the period of the output waveforms is given by T = 4RC and T = 2RC. With switch SI in position A, VI is a triangular waveform, while V2 is a square wave (B)
Adjustable function generator - schematic

With the switch in position B, a sawtooth waveform is generated at VI and a pulse at V2(C).




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