Design by Ray Wilson: Musicfromouterspace.com
Lately more students ask for an oscillator that is capable of generating real low frequencies, a so called Low Frequent Oscillator (LFO). So I made a simple and small LFO.
If I have to look for a good design circuit related to synths, I always visit the website ‘musicfromouterspace.com’ with designs from Ray Wilson. Great designs! For an more extended explanation and circuit description, please check this page: The only thing part that I did not implement in my version, is the LED and the extra capacitors making the power supply ‘smooth’.
Bottomside (sold side) 
Topside (Component side)
I made a real small version, since it had to be placed into a really small housing. Instead of the switches, I used two jumpers, changing the frequency-range and the waveshapes..
