ADSRjr: Envelope Generator with Expansion

Going postal

The ADSRjr is an envelope generator with many features. Standard gate input
jack is normalled to the Doepfer bus gate signal. Three time ranges cover times
from tiny to huge. Linear or expo curves are jumper selectable. A cycle button
creates continuous waves.

The expansion module brings out a metric boatload of features: CV control of
each segment, trigger button and jack, buttons replace the linear/expo jumpers,
end of attach, decay and release outputs, and an inverted output.

ADSRjr Features:
  • Gate jack normalled to Doepfer bus gate signal
  • Time range selections: short, medium, long
  • Linear or exponential curve jumper selectable for each segment
  • Cycle button for continuous operation
  • Convenient output jack
  • 4HP, depth=53mm

Expansion Features:
  • CV control of each segment
  • Buttons for selecting linear or exponential curves
  • Trigger button and input
  • End of attack, decay, and release outputs
  • Inverted output jack
  • 4HP, depth = 26mm

Both modules are 4HP. The ADSRjr module has a maximum 20mA current