Sep 20, 2017 · Astable multivibrator adapted from inverting Schmitt trigger circuit. The multivibrator does not take in an input signal. When powered up, it creates a full-range square waveform across the op-amp’s output and a half-range waveform across the non-inverting input (some documents denote this waveform as the reference voltage). Op-amps in switching circuits, Crossing detectors, Inverting Schmitt trigger circuits, Non-inverting Schmitt circuits, Astable multivibrator, and monostable multivibrator. Signal Generator Triangular/Rectangular wave generator, Waveform generator design, Phase shift oscillator, Oscillator amplitude stabilization, Wein bridge oscillator, Signal ... TRIANGULAR WAVE GENERATOR:- Triangular wave generator can be form by connecting an integrator to the square wave generator. This circuit requires dual op-amp,two capacitor and five resistors. For fix R1,R2,C be frequency of triangular wave depends on R As value of R is increase or decrease the frequency of triangular wave is increase or decrease.