PB401 VC Echo

The echo and delay module based on the digital delay chip PT2399. The echo could be changed with a poti, the delay with CV (0 to 5V) or with a poti.
The board was developed in cooperation with Ioana Vreme Moser.


Hardware


Schematic

Paper-PCB

Parts

  • Resistors:
  • 1x 1 kOhm
  • 1x 4,7 kOhm
  • 1x 5,6 kOhm
  • 5x 10 kOhm
  • 2x 15 kOhm
  • 1x 18 kOhm
  • 1x 20 kOhm
  • 1x 100 kOhm
  • Capacitors:
  • 2x 560 pF (foil)
  • 1x 3300 pF (foil)
  • 1x 3900 pF (foil)
  • 1x 10 nF (foil)
  • 1x 39 nF (Foil)
  • 5x 100 nF (foil)
  • Electrolytic Capacitors:
  • 2x 4,7 µF
  • 1x 10 µF
  • 1x 47 µF
  • Semiconductors:
  • digital delay PT 2399
  • optocoupler H11F1
  • Mechanical:
  • 1x IC socket, 16 pin
  • 1x IC socket, 6 pin
  • 1x pin strip 1×9
  • 2x pin header, female 90° 1×3, 1×2
  • 2x pin header, male 90° 1×3, 1×2
  • 3x jumpers
  • Potentiometers:
  • 1x 10k
  • 1x 50k