Stable sine wave oscillator composed of F007

Published:2011/4/21 6:39:00 Author:Ecco | Keyword: Stable sine wave oscillator | From:SeekIC

The chart shows the stable sine wave oscillator circuit. In order to obtain a stable oscillation, it requires a loop gain with 1. If the gain is too large, the waveform will occur distortion; if the gain is too small, the circuit will stop vibration. This circuit uses two diodes to stabilize the oscillation. When the output voltage is too low, the diode cuts off, negative feedback is cut off, the loop gain to improve the output voltage increased. When the output reaches a certain value, the diode conduction, the loop gain is improved, output voltage increases. And when the output rate reaches a certain value. The potentiometer in the figure is used to adjust the output amplitude and distortion. The oscillation frequency of the circuit is decided by the resistor R and capacitor C: f0 = 1/2πRC.



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