40106 Making Waves 

I have been playing around with the 40106 hex inverter chip. It is the basis for one of the simplest VCOs you can build but it is also remarkably versatile. In this short video I show how you can build VCOs that produce square, triangle, saw, reverse saw and/or pulse waveforms with no more than 4 components. Also, I give a brief demo of how they sound. This is not a build video as such but I hope it may encourage you to take these ideas and build your own version of a 40106 VCO.