234_kHz_SINE_WAVE

Published:2009/7/5 20:56:00 Author:May | From:SeekIC

Uses low-cost LM3900N quad differential amplifier IC in lowdistortion oscillator for which third harmonic distortion is typically 0.5%. Peak-to-peak amplitude of sine-wave output is typically 25% of source voltage VCC. Frequency can be changed by altering single component. R3. or by inserting between points B and C an RC network and pot connected as shown in inset. Article gives design equations for frequency and Q.-T. J. Rossiter. Sine Oscillator Uses C.D.A. Wireless World. April 1975. p 176.



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