Triangular wave generator using Op Amp 741 circuit working and simulated output waveform


Posted on Feb 5, 2014

Operational amplifier based triangular wave form generator is simple circuit that is widely used in function generators. Here is the circuit for Triangular wave generator using 741 op amp. We know that the integrator output waveform will be triangular if the input to it is a square wave. It means that a triangular wave generator can be formed by s


Triangular wave generator using Op Amp 741 circuit working and simulated output waveform
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imply cascading an integrator and a square wave generator, as illustrated in figure. This circuit uses two operational amplifiers. First op amp functions as a comparator and next op amp as an integrator. Sawtoothwaveform can be easily generated by doing little modifications in the triangular wave generator circuit. In this circuit the non inverting` terminal of second op amp is grounded, to get sawtooth generator we just need to add a potentio meter arrangement. Thus one end of the potential divider R1 R2 is at +Vsat and other end is at negative going ramp. When the negative going ramp attains a value say Vramp the effective voltage at P becomes slightly less than 0V. This switches output of comparator to Vsat. During this time integrator output will be positive going ramp. When the value of positive going ramp attains +Vramp, voltage at P` becomes slightly greater than 0V, there by switching comparator output to +Vsat.




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