PRECISION_FULL_WAVE_DIODE_DETECTOR

Published:2009/7/16 4:16:00 Author:Jessie | From:SeekIC

Uses opamp to reduce input voltage at which transfer curve of diode detector becomes nonlinear by factor equal to open-loop gain of opamp. Chief drawback is that delay for positive input signals, which are inverted and amplified 2 times, is twice that for composite signals. Be-VTVM cause of delay difference, signals do not subtract in phase and high-frequency performance suffers. Values shown are for test purposes, with low-pass active filter having 2-kHzcutoff.-H. Olson, Diode Detectors, Ham Radio, Jan. 1976, p 28-34.



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