Precision-envelope-detector


Posted on Feb 18, 2013

This circuit is useful for signal-processing sonar data recorded on an instrumentation-quality analog tape recorder. The envelope detector utilizes ready available parts, and furnishes accuracy beyond 100 kHz. Two LM301 op amps connected as precision absolute-value circuits use 2-pole frequency compensation for increased slew rate.


Precision-envelope-detector
Click here to download the full size of the above Circuit.

And one section of an LM324 quad op amp connected in a Butterworth LPF configuration subjects the rectifier"s output to a low-pass filter.




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