Vintage Moog Schematics Hand Drawn by Bob Moog Himself

Pictured here in order:

901-A Oscillator Controller
This schematic is extremely exciting. It is from 1965, when the first modules for sale were being built. In addition to its early nature, it was also hand-drawn by Bob Moog, using his initialized colloquial term, “B.S.”.

901-A Oscillator Controller: Adder and Exponential Generator
This schematic lacks the name of the draftsperson, but it appears to be the same person who drew the 1966 901-B schematic in this series. This was drawn in 1966.

1966 901-B Oscillator
The 901-B oscillator is the second half of the 901-A/901-B combination. It allows you to set the octave, pitch, and waveform of the tone it generates. This schematic was hand-drawn in 1966.

See The Bob Moog Foundation for more.