Doepfer A-140-1 - ADSR Envelope Generator

Doepfer

$99.00
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SKU:
DoeA-14001
UPC:
4250711114008

Module A-140-1 is an envelope generator, and, since it puts out control voltages, counts as one of the modulation devices in a modular system.

As soon as the gate input receives sufficient voltage, the ADSR generates a variable voltage, changing in time, called an envelope.

This varying voltage is output in normal (positive) and inverted form, and can be used, eg., for voltage controlled modulation of a VCO, VCF, or VCA, or for processing other modules' inputs and outputs.
The shape of the envelope is governed by four parameters: Attack, Decay, Sustain and Release.
The envelope is started (triggered) by a gate signal either from the INT.GATE voltage on the system bus, or, if a signal is put into it, from the gate input socket.
The envelope can also be re-triggered, ie. start from scratch again, each time a trigger signal is sensed at the Retrig. input socket, when the gate is still open.

 

Module A-140 has available a three-position toggle switch to select one of three time ranges. The time ratios for the three ranges are about 1 : 20 : 1000. The absolute Attack times are about:

 

  • 20uS ... 100ms (switch position L)
  • 400uS ... 2s (switch position M)
  • 20ms ... 120s (switch position H)

Width:  8 HP / 40.3 mm
Depth: 50 mm (measured from the rear side of the front panel)
Current: +20mA (+12V) / -20mA (-12V)