PRECISION_FULL_WAVE_RECTFIER

Published:2009/7/9 2:45:00 Author:May | From:SeekIC

Using two op amps, this circuit produces a full-wave rectified version of the input signal. Op amp IC1 inverts the negative-going signal, but because of D2, it stays near zero. IC2 produces a positive-going sig-nal. For positive-going signals, IC1 produces a negative output through D1 to IC2, where it is combined with positive VIN from R4/R5. At the summing junction of IC2, the negative output of IC1 is doubled and inverted via IC2, R3, and R5 to produce + V0UT. This is summed with negative output of IC1 to produce + V0UT.



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