A simple neuro-controller for a synchronous generator is presented in this paper. The controller performs the function of the terminal voltage control. By representing the proposed neuro-controller in s-domain, its parameters to ensure system stability can be obtained analytically. Results of simulation studies on a non-linear seventh order generator model with the neuro-controller using calculated parameters are given. Real-time implementation and experimental verification of the neuro-controller as an automatic voltage regulator for a physical model of a single-machine infinite-bus power system is described. Results of experimental studies demonstrate the effectiveness of this simple neuro-controller.