Voltage Controlled Oscillator - Switch 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 'S' (switched) version:

Square out has an independent switch that drops the square wave down -1 or -2 octaves from the triangle output frequency.

Sawtooth has an independent switch that raises the sawtooth frequency up 1 octave from the triangle output frequency.

The octave switches on the individual waveforms allow for up to a 4 octave spread of waveform outputs from a single oscillator. All in sync and in tune with each other.

Added features for the new VCO 2

These modules are no longer available 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!



This module is no longer available.

The switched version had been discontinued and will be replaced by the new VCO 2.

See the VCO-J description on this site.

$ N/A

Info for discontinued VCO-S

Current draw: Initial warm up (first minute):

V+= 93.6mA

V-= 42.2mA

After warm up:

V+= 73.2mA

V-= 42.0mA

Personal tools