Bogen-Tone Signal Generator

hello everybody it's great to be back doing another circuits tutorial it's been so long since i've done one of these i almost forgot i was an electrical engineer what this oh don't worry about that now it's just my uh nicotine patch yeah anyway today we are going to be building a frequency generator the schematic looks like this the final product looks like this so let's just jump into it [Music] it's fairly fundamental in electronics to be able to generate a frequency there are different kinds of waves that you can make this would be an example of a square wave this being an example of a triangle wave and this being an example of a sinusoidal wave the circuit i will be building for you today will be able to generate all three lovely for us this circuit can be broken up into two sections the first thing that we need to build is a circuit called a relaxation oscillator and i know what so