Sine Wave Oscillating Circuit Compsoed of MJM5534

Published:2011/8/25 7:46:00 Author:Sue | Keyword: Sine Wave, Oscillating Circuit | From:SeekIC

The picture shows sine wave oscillating circuit which is composed of MJM5534. This a kind of wien bridge sine wave oscillating circuit. If R1=R2=R,C1=C2=C, then oscillating frequency is 1/(2πRC). Wien bridge will make amplitude stay stable, so there is great distortion. But when it is converted to low frequency which is below 10HZ, the amplitude will be stable in short time. According to the component parameter in the picture, by adjusting RP1's resistance value, output voltage's effective value is 5V. By changing C1's value, its distortion rate will be 0.7%-0.9% in the frequency range of 10HZ-100KHZ. If output voltage's effective value is adjusted to 3V, then the distortion rate can be reduced to 0.1%.



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