ESP Sound Impairment Monitor

Posted on Sep 11, 2012

A differential amp used by the SIM, and it is a completely conventional circuit. This is adjustable by using VR1 to null out any normal variations that the amp might show when there is no distortion or other nastiness in evidence. The second stage is a high gain amplifier, and will amplify the residual signal to a level suitable for the rectifier and indicator circuits.

ESP Sound Impairment Monitor
Click here to download the full size of the above Circuit.

The opamp shown is adequate for most applications, but the use of a premium device from Analog Devices or Burr-Brown will improve performance, especially at high frequencies. This is not strictly necessary, because the operation of any amplifier protecti

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