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Discrete ADSR 1

Courtesy/Thanks to: Rene Schmitz

Description: Discrete ADSR
The original circuit was found in the Music Machines diy-archives. Its a design by Barry Klein. I started to expand it from the Original AD-envelope to an ADSR envelope. Make sure you add a 2.2kOhms resistor in series with the Attack and Decay pots, this prevents clicking and an unwanted latchup condition for the flip-flop.

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Files
adsr.png
   Schematics of a dicrete ADSR
Manufacturers
Rene Schmitz
   
Parts used
1N4148
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TL074
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HEF 4001
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