A simple chaos-generator for neuron element utilizing capacitance–npn-transistor pair

We have found chaotic responses observed in the capacitance–npn-transistor pair and have clarified its mathematical characteristics and physical mechanism. It is a very simple circuit compared with any chaos-generating circuits ever proposed and can be implemented by typical BiCMOS process for integration, yet its characteristics contain many functions and are easily controllable. We also proposed an application of this circuit to a neuron circuit and simulated its characteristics in detail. The simulated results show the feasibility to realize a novel information processing system such as a chaotic neural network.