Voltage Controlled Oscillator - Jack Version

From MMM Wiki

Jump to: navigation, search


There are two versions of the VCO. Both are identical oscillators. The difference between them is the panel output and switching configurations.

For both VCO versions:

The 1V/O In jack allows for 1 volt/ octave control of the oscillator root frequency.

The exponential amplifier is incorporated into the VCO module.

The Lin Out jack allows for a buffered linear CV that controls the VCO to be "tapped" and used for a control voltage elsewhere in the system. Typical use is for connecting to another VCO without tying up a buffer channel.

The Master Tune allows for approximately +/- 1 octave continuous adjustment of the oscillator root frequency.

The Fine Tune allows for approximately +/- 3 semi-tone adjustment of the oscillator root frequency.

Mod In jack provided for an oscillator modulation source CV input.

Mod Amount control for variable control of the modulation CV effect on the oscillator frequency.

Simultaneously available Triangle, Square and Sawtooth waveform outputs.

Master Octave switch transposes the oscillator up or down 1 octave.

The "V/O" Adj is available for scaling adjustment from the front panel.

For the 'J' (Jack) version:

All of the available waveforms are present at jacks. (Triangle, Saw 0, Saw +1, Square 0, Square -1 and Square -2.)


This module is no longer available.

VCO 2 coming soon!

VCO2 has all of the standard VCO features and includes the following features:

A: Sine waveform output

B: Manual PW on main square output

C: PWM input and attenuator for main square wave output.

7 simultaneous waveform outputs spreading 4 octaves!



Current draw of version 1:

Initial warm up (first minute):

V+= 93.6mA

V-= 42.2mA

After warm up:

V+= 73.2mA

V-= 42.0mA

Personal tools