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CGS507 - 1973 VCO
Let's Go Shopping

The CGS507 starts with a classic sawtooth oscillator core and adds a voltage controlled wave shaper to the output.

Unlike most conventional VCOs' the CGS507 does not have a 1V/Octave input. However the scalable input [CV A] of the CGS507 can be used in conjunction with the [FREQUENCY] control to provide tonal tracking.

The [CV B] knob can be used as a FINE TUNE control for the oscillator.

The wave shaper allows the [SHAPED] output to swing from a sine wave to a modified sawtooth output and can be both manually and voltage controlled.

Wiring Guide for the ES20 PCB


CV A & CV B
0V to +5V
WAVE SHAPER
0V to +5V
SYNC
1V <> 2V
SHAPED - AC
-2V5 to +2V5
SHAPED - DC
0V to +5V
SAW - AC
-2V5 to +2V5
SAW - DC
0V to +5V
Frequency Range
16Hz to >16kHz

 

PCB Dimensions: 1" x 6" with 3.2mm fixing points 0.15" from the edges
Power Consumption: +12V @ 15mA, -12V @ 5mA
Email:  elby-designs@bigpond.com
© Copyright 2000. All rights reserved.     Revised: January 16, 2020