How to make a Triangular waveform using Schmitt Trigger and Integrator ?
Another triangular-waveform generator that needs fewer components is shown in figure. The arrangement consists of a non-inverting Schmitt trigger Ax and an integrator A2. The output of a Schmitt trigger is a rectangular wave that drives an integrator. The output of the integrator is a triangular wave, which is fed back and used to drive the Schmitt trigger. Thus first stage drives the second, and the second drives the first. But the question arises on how the circuit gets started in the first place. This is explained below. When the Schmitt trigger is connected to power supplies for the first time, the output of the Schmitt trigger must be either low or high. When the Schmitt trigger output is low, the output of the integrator will be a rising ramp while for Schmitt trigger high output, the integrator will produce falling ramp. Either way, the triangular waveform has started, and the positive feedback will keep it going. The transfer characteristic of the Schmitt trigger is shown in fi
