Table of Contents

PB105 Saw Sync

That is an other version of the PB101 Sync VCO with a switch for shaping the waves. In square wave mode one can change to a super short duty cycle and in triagle mode one can switch the wave form from triangle to ramp. The board itself has some smal mistakes compared to the PB107 Sync VCO II but that makes the sound quit interesting.


Paper PCB

Parts

  • Resistors:
  • 1x 1 kOhm
  • 1x 4.7 kOhm
  • 4x 10 kOhm
  • 10x 47 kOhm
  • 4x 100 kOhm
  • Capacitors:
  • 1x 22 nF
  • 1x 10 nF
  • 2x 10µF
  • Diodes:
  • 1x 1N4148
  • Semiconductors
  • 2x BC547 transistor
  • 2x LM358 OpAmp
  • Mechanical:
  • 2x IC socket, 8pins
  • 1x pin strip 1×14
  • 2x pin header, female 90° 1×3, 1×2
  • 2x pin header, male 90° 1×3, 1×2
  • 4x jumpers
  • 3x mini switch
  • Potentiometers:
  • 2x 10k
  • 1x 100k