Triangle & Square Wave Oscillator 1kHz
This simple relaxation oscillator provides both a square- wave and a triangular- wave output. This oscillator is biased for operation on a single +5V supply. The DC component of each output can be removed by capacitive coupling if necessary.Since a rail-to-rail output op amp is used for U1, the square wave output amplitude is the same as its supply voltage. A lower quiescent current op amp such as an OPA364 can be used if Iq is important. Oscillator frequency is determined by C1 & R1. The Transient Analysis used the “Zero initial conditions” to aid the oscillator start- up. This start- up time is visible for the first few milliseconds in the waveform above. (Circuit is created by Neil P. Albaugh TI- Tucson)
“Triangle & Square Wave Oscillator 1kHz” circuit:
Online Simulation of the “Triangle & Square Wave Oscillator 1kHz” Circuit
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Michael Koltai
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