The task in this paper was to make a triangular wave generator as a physical circuit on a printed circuit board, to make a circuit simulation in the Multisim software package and finally to compare the operation of the generator and its simulation. The generator is made using two circuits with operational amplifiers. The circuit can therefore be conceived of as two smaller circuits, a comparator and an integrator. The working principle of the generator is as follows. The sinusoidal signal is fed to the comparator input and is converted to rectangular signal when passing through the comparator. Then the rectangular signal at the output of the comparator circuit is by passing through the integrator circuit finally converted into a triangular one. We can conceptualize the task in a narrower sense as a task of designing two circuits. Starting with the theoretical understanding and solving of these two circuits in ideal conditions, their expected behavior is obtained. By selecting the components with which they will be assembled, the circuit as a whole begins to develop on the printed circuit board, where its fidelity to theoretical considerations and to the simulation can finally be tested.