Comparison of 3 Function Signal Generators, Velleman (Whadda) , Elenco FG-500, Jameco FG

In this video we compare the output of 3 different function generators we have built.
1. Whadda Signal Generator by Velleman - operates on a 555 timer.
2. Elenco Function Generator FG-500 - operates on an IC - the XR2206 with some other basic components for biasing and frequency selection.
3. Jameco Function Generator (Part no. 20685) - also operates on the XR2206 Integrated Circuit with some other basic components for biasing and frequency selection but slightly different to the Elenco.