MFOS VCO

This oscillator produces sine, square, triangle and ramp waveforms and with careful adjustment tracks at 1V/octave over 6 to 8 octaves. The parts for it are easily obtained and not extremely expensive.


This is for a PCB only, suitable for multiple formats.

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$19.99

Details

Details

 

Features

  • Years of MFOS VCO improvements all rolled into this design.
  • Good tracking over several octaves (6 to 8).
  • Can be temperature compensated with a metal film 2K Ohm 1/4W +/-2% T.C. +3300 PPM tempco.
  • Simultaneous Rectangle, Ramp, Triangle and Sine Outputs (Ramp core design)
  • Designed for 1V/Octave control voltage
  • 4 1V/Octave control voltage inputs.
  • 1 Linear control voltage input.
  • Hard sync input.
  • Rectangle wave duty cycle adjustable between 10% and 90%
  • Rectangle wave duty cycle voltage controllable
  • Frequency range is from sub audible (approximately 0.1 hertz) to ultra-sonic 20kHz.
  • Power supply can be +/-12 or +/-15 volts.

MP3 Samples

 

 

Introduction

Oscillators are the main tone generating modules of your synthesizer. This oscillator produces sine, square, triangle and ramp waveforms and with careful adjustment tracks at 1V/octave over 6 to 8 octaves. The parts for it are easily obtained and not extremely expensive. The whole circuit is here so breadboard it and see if you like it. I like this oscillator but please recognize that it relies on a well matched pair of transistors. Its frequency range is from below audible to beyond audible. 

Specs & Downloads

Specs & Downloads

manufacturer MFOS
HP No
Depth No
+12V No
-12V No
+5V No
Additional Resources http://www.musicfromouterspace.com/index.php?MAINTAB=SYNTHDIY&PROJARG=TENSTEPSEQUENCER/TENSTEPSEQUENCER.php

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