  We propose a new analog feedback controller based on the classical cross
coupled electronic oscillator. The goal is to drive a linear passive plant into
oscillations. We model the circuit as Lur'e system and we derive a new
graphical condition to certify oscillations (inverse circle criterion for
dominance theory). These conditions are then specialized to minimal control
architectures like RLC and RC networks, and are illustrated with an example
based on a DC motor model.
