VC LFO

VC LFO front

VC LFO front

A VC LFO with multiple synced output waveforms is a very useful and versatile module. You can’t have enough of them. They can add a lot to sounds making them more animated. This one provides triangle, ramp up, ramp down pulse. square and sine wave output (-5V to +5V). The frequency range is easily adjusted to your needs from some minute per cycle up to 700Hz. I started with the VC LFO design form Ray Wilson MFOS but changed the exponentiator and pulse adjust schematic completely. I have added a range switch and a linear FM input as well.

Specs and features
• Synced triangle, ramp up, ramp down, pulse, square and sine wave output
• Output -5V to +5V
• log and lin CV input
• Voltage controlled pulse width
• Range switch
• Coarse and fine frequency setting
• Runs on +/-15V and +/-12V
• Power consumption below 10mA each rail

The documentation for download can be found in my website.

VC LFO schematic

VC LFO schematic

VC LFO waveforms screenshot

VC LFO waveforms screenshot

VC LFO waveforms screenshot

VC LFO waveforms screenshot

VC LFO populated PCB

VC LFO populated PCB