Triangle wave

A triangular wave generator, an electronic circuit for generating a triangle wave. Such a vibration increases linearly up to a maximum voltage value, and then decreases linearly to a minimum voltage value.

Operation

Wherein the analog circuit implementation of the operational amplifier OP2 in the circuit is connected as a Miller integrator and implements the linear rise and fall. Charging resistor R1, capacitor C1 is integration. OP1 is connected as a non-inverting Schmitt - trigger. R2 and R3 determine the switching voltages. When the voltage at the output of the Miller integrator, the upper threshold voltage of the Schmitt trigger, the voltage at the output of OP1 is switched from the positive supply voltage to almost nearly the negative supply voltage. The Miller integrator integrates the voltage jumps to a triangular signal.

The frequency of the triangular wave is determined by R1 and C1.

In addition to the analog circuitry, a triangular waveform generator can be implemented as part of digital signal processing by means of the Direct Digital Synthesis (DDS). She has in addition to a better reproducibility the advantage of easier adjustability and variability of the frequency.

Applications

Wherein a function generator, a triangular wave is formed by non-linear components in a more or less good sine wave.