Penfold synthesiser

Jump to navigation Jump to search
The cover of Electronic Synthesiser Construction by R. A. Penfold.
A Penfold synthesiser built by David Hewitt

The Penfold synthesiser is a basic synthesizer based on the circuits described in the Babani book Electronic Synthesiser Construction by R. A. Penfold, published in 1986.


The synthesizer has the usual VCO-VCA-VCF voice, the book also includes an ADSR envelope generator, several simple sequencer circuits and a pseudo-stereo circuit using a simple phase-shift circuit.[1]


  • 1M for RV101 and RV102
  • 2.2uF for C101
  • 10k for the volume pot
  • Op-amp buffer outputs
  • Add a unity gain buffer to the AR
  • Use star wiring for the power supply rails instead of daisy chained


See also


External links