Discussion
A relaxation oscillator is one which
Answer: D
A relaxation oscillator is one that produces a non-sinusoidal output, such as a square, triangular or sawtooth wave, by the repeated charging and discharging of a capacitor between two thresholds, so option D is the keyed answer. The multivibrator and the Schmitt-trigger based oscillator are the usual examples. Sinusoidal oscillators produce continuous sine waves. The statements that it relaxes indefinitely or has two stable states describe neither the circuit nor its output.
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