Schematics / VCO Function Generator Type B
VCO Function Generator Type B - Sine and Triangle from The Synthasystem design by Nyle Steiner ,visit Analogue Realities project page dedicated to the Synthasystem for details on this module ,BoM ,and availability on pcb's .This is the page dedicated to this VCO http://user.xmission.com/~dingebre/VCO_B_Sine_Triangle.html from there ,the description by David M. Ingebretsen who runs the Synthasystem clone project :
This module produces an oscillating signal whose frequency is based on a voltage input. Typically, this is an audible tone, but this module can oscillate from well below hearing to well above. The control voltage input is typically tuned to a 1 volt/octave scale. Two waveforms are available, Sine and Triangle. These two outputs are available at the same time. This module has a very wide useable frequency range from well below audible as a Low Frequency Oscillator to above hearing without re-tuning. Nyle really outdid himself on this module. Very unique and I will say I think it has the best sine wave I've heard.
visit the Synthasystem subforum for further information : http://electro-music.com/forum/index.php?f=189