AR envelope generator

This is a handy project! It's a simple dual envelope generator with Attack and Release (AR). The envelope generators also have a loop function making the envelope a sort of LFO with the frequency and wave shape set by the time constants of the Attack and Release controls. It is inspired by Eric G with some changes, my version uses the +5V in the Doepfer cabinet, but this can be made with an onboard 5V regulator (like a 7805 for example). It outputs two control voltages, one inverted.

Unfortunately there are no building instructions for this module, but at least you'll find the schematic, some photos, and some comments.

Schematic
Component placement for stripboard. Note the red rings which indicates places to "drill" holes through the board for access of the trim potentiometers on the second board.
  1. The finished module without a faceplate.

  2. And mounted in the modular.

That's it! Have fun and envelope generating!

/Niklas

Updated - 2013-08-31 19:34
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