Gallery: Bob Moog's Beautifully Intricate Drawings of Synth Circuits
The Bob Moog Foundation011-capacitance-actuated-relay
A 1964 schematic shows a "capacitance actuated" relay. It's unclear what this was for exactly, but theremins are "capacitance actuated" in that the placement of your hands determines the frequency of the sound. Bob was fond of using the incognito initials "B.S." to hide the fact that R.A. Moog Co. was a one-man company at this time.
The Bob Moog Foundation023
Moog drew this 1966 schematic of an oscillator controller by hand. As its name implies, it was used to regulate the frequencies of two or more oscillators, electronic circuits that provided the sine, triangular, pulse, and sawtooth waveforms. It's those waveforms that produce different synthesizer sounds.
The Bob Moog Foundation035-oscillator-schematic
About the controller schematic from the previous slide... This is the the 1966 "schemtic" for the oscillator it likely controlled.
The Bob Moog Foundation044-capacitance-relay
This schematic shows a Renfer Capacitance Relay Oscillation Board, which likely led to the creation of 12 capacitance sensing antennas that composer John Cage used to create [Variations V](https://www.youtube.com/watch?v=jQTFZNm3dE4).
The Bob Moog Foundation0518-300-midget
This is the control plate to a Moog Midget. What the heck is a Moog Midget? You may know it better as the Concertmate MG-1, an analog synth manufactured by Moog and sold by Radio Shack in the early 80s under the Realistic brand name.
The Bob Moog Foundation068-903A-circuit-diagram
This circuit trace layout from 1970 shows the 903A module, basically a noise circuit that provided white and pink noise.
The Bob Moog Foundation078
Here's a layout for Moog's [Synthesizer 1c](http://www.vintagesynth.com/moog/moog_synthesizer_1c.jpg), a preconfigured model made in 1968.
The Bob Moog Foundation089-3p-layout
In 1968, Moog synthesizer systems gained console (C) and portable (P) designations. Here we have a system layout for the Synthesizer IIIP.
The Bob Moog Foundation0910-synthesizer-1p
The layout for the Synthesizer 1P. This smaller version of the hulking 1C could be hauled around in its special cabinet.
The Bob Moog Foundation1019
Here we have the mechanical drawing for the Moog 1130 Percussion Controller, basically an acoustic transducer inside a tom drum that converts the beating of the drum head into a voltage output that can be used to control devices like a Minimoog. [Check it](https://www.youtube.com/watch?v=BVsTQDl5W7w).
The Bob Moog Foundation1113-1130-cable
An elaborate mechanical drawing for the connector cable to goes to the 1130 drum controller.
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