Because the output of the comparator is a square wave, the circuit can be used as a triangular wave oscillator and a square wave oscillator. This type of device is usually called a function generator because they can generate more than one output function waveform. The output amplitude of the square wave is set by the output swing of the comparator, and the output amplitude of the triangular wave can be obtained by setting the voltages of UTP and LTP with resistors R2 and R3. The formula is as follows: