Electrical circuits are the most noted examples non-mechanical oscillatory behavior.
In fact, because of their great practical importance, they have become the prominent model used in describing oscillatory motion. In this experiment we made a slight variation on the standard RLC circuit usually used to understand linear oscillatory behavior. By replacing the capacitor in the circuit with a diode we added a non-linearity to our system. When a diode is forward biased, or conducting, it acts as a constant voltage source. When the diode is reversed biased it acts as a capacitor.