Carbon-pile voltage regulators

IN ORDER to determine the stability and transient characteristics of a system in which a carbon-pile regulator controls the voltage of a d-c generator, an analysis of the transfer function of the regulator has been made. The transfer function was defined in such a way that the regulator can conveniently be considered a linear amplifier in a feedback control loop. Also, the definition was chosen so that empirical measurements of the regulator transfer function would be feasible. Input and output variables are taken as changes from the initial operating points of operating coil voltage and carbon-pile resistance, respectively. By definition the transfer function of the regulator is the complex quantity R(ω)/e.