400_Hz_LED_OPAMP_SlNE_WAVE

Published:2009/7/5 22:47:00 Author:May | From:SeekIC

Uses LEDs as nonlinear- resistance diodes in Wien-bridge configuration with opamp operating from 15-V supply. Circuit will operate over wide range of other frequencies if values of R and C are changed. R5 adjusts output amplitude from 10 to 20 V P-P. Total harmonic distortion is 15%.-W. G. Jung, LED's Do Dual Duty in Sine-Wave Oscillator, EDN Magazine, Aug. 20, 1976, p 84-85.



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